SCOPE
Where the term "elevator" is used in a referenced requirement, it shall mean "dumbwaiter" or "material lift."
Section 7.1 applies to all power dumbwaiters without automatic transfer devices.
The construction of hoistways and hoistway enclosures shall comply with Section 2.1, except as modified by 7.1.1.1 through 7.1.1.4.
Requirement 2.1.1.1 applies, except where dumbwaiters are installed in a private residence. In private residences, fire-resistive construction shall conform to the requirements of the building code.
Requirement 2.1.2.1 does not apply. Where a hoistway extends into the top floor of a building, the hoistway or machinery space enclosures, where required, shall be constructed in accordance with the requirements of the building code (see Section 1.3).
Requirement 2.1.3.2 does not apply. The floor shall be designed in accordance with other floors in the building. Where the dumbwaiter machine is to be supported by the machine room floor, the floor shall be designed in accordance with 2.9.4 and 2.9.5.
Pits are not required, but shall be permitted. Where a pit is provided, it shall conform to Section 2.2, except as modified by 7.1.2.1 through 7.1.2.6.
Section 2.3 does not apply to the location and guarding of counterweights, except that the location of counterweight shall comply with 2.3.1.
Section 2.4 does not apply. Bottom and top car clearances and runbys for cars and counterweights shall conform to 7.1.4.1 and 7.1.4.2.
When the car or counterweight reaches its maximum limit of upward travel, no part of the car or counterweight or any equipment attached thereto shall strike any part of the overhead structure or equipment located in the hoistway, except a mechanical stop or buffer.
Where a top-of-car operating device is provided, a minimum vertical space shall be provided on the car top when the car reaches its maximum limit of upward travel. The space shall comply with 7.1.4.3.1 and 7.1.4.3.2.
The horizontal unobstructed area on the car top shall be not less than 0.370 m2 (570 in.2), measured not less than 500 mm (20 in.) on one side.
The vertical height of the area on the car top shall be not less than 1100 mm (43 in.), measured vertically between the top of the car enclosure and the overhead structure or other obstruction.
Horizontal car and counterweight clearances shall conform to Section 2.5, except as modified by 7.1.5.1 through 7.1.5.4.
Requirement 2.5.1.1 applies for dumbwaiters with a rated load over 227 kg (500 lb). For dumbwaiters with a rated load of 227 kg (500 lb) or less, the clearance between the car and the hoistway enclosure shall be not less than 13 mm (0.5 in.).
Requirement 2.5.1.2 applies for dumbwaiters with a rated load over 227 kg (500 lb). For dumbwaiters with a rated load of 227 kg (500 lb) or less, clearances between the car and the counterweight shall be not less than 13 mm (0.5 in.).
Requirement 2.5.1.4 applies, except when a counterbalanced car door is provided. The clearance shall be measured between the landing side of the car door sill and the hoistway edge of any landing sill, or the hoistway side of any vertically sliding counterweighted or counterbalanced hoistway door or of any vertically sliding counterbalanced biparting hoistway door sill.
Direct-plunger hydraulic dumbwaiters shall conform to Section 3.6.
Machinery spaces, machine rooms, control spaces, and control rooms shall comply with Section 2.7, except as modified by 7.1.7.1 through 7.1.7.11.
Dumbwaiter machine rooms shall conform to 2.7.2 or the following:
(a) Guards on dumbwaiter equipment shall prevent accidental contact with moving parts and shall permit visual inspection without complete removal.
(b) Where a dumbwaiter machine is located at the bottom of the hoistway, the control equipment shall be located outside the hoistway or in a cabinet on the inside surface of the access door.
Requirement 2.7.3.1 does not apply. A means of access to dumbwaiter machine rooms and overhead machinery spaces shall be provided, from outside the hoistway, for elevator personnel.
Requirement 2.7.3.3 applies only where a machine room or control room is provided for machine and control equipment.
Requirement 2.7.3.4.6 applies, except the maximum width of an access opening located not more than 1525 mm (60 in.) above the lowest point of the hoistway, contiguous to and in vertical alignment with a hoistway entrance, shall be the lesser of 1220 mm (48 in.) or the hoistway entrance width.
Hoistway access openings shall be provided with an electric contact that will cause interruption of power to the motor and brake when the access door is open.
Lighting, temperature, and humidity shall conform to 2.7.9, except 2.7.9.2 does not apply. Where there is a machine room, it shall be provided with natural or mechanical ventilation to avoid overheating of the electrical equipment to ensure normal operation of the dumbwaiter.
Requirement 2.7.6 does not apply, except as follows: Controllers located outside the hoistway and not in machine rooms, control rooms, machinery spaces, or control spaces shall be enclosed in a locked cabinet. The locked cabinet shall comply with 2.7.6.3.2.
Electrical equipment, pipes, and ducts in hoistways, machine rooms, and machinery spaces shall comply with Section 2.8, except as modified by 7.1.8.1 through 7.1.8.3.
Type SF or equivalent wire is not required for the wiring to the hoistway door interlock from the hoistway riser.
Requirement 2.8.1 does not apply. Dumbwaiter machine and control equipment shall be permitted to be located in a room or space containing other equipment essential to the operation of the building, provided that all exposed moving parts are guarded.
Machinery and sheave beams, supports, and foundations shall comply with Section 2.9, except as modified by 7.1.9.1 through 7.1.9.4.
Machines and equipment directly over the hoistway shall be permitted to be hung underneath the supporting beams at the top of the hoistway.
Requirement 2.9.3.2 applies to the machine or sheave connections between the machine or sheave and the beams, foundation or floor, and machinery that is hung underneath the beams.
Section 2.10 does not apply, except that the guarding of equipment shall comply with 2.10.1. Power dumbwaiter machines and sheaves shall be permitted to be located inside the hoistway enclosure at the top or bottom without intervening enclosures or platforms.
The protection of hoistway openings shall conform to Section 2.11, except as modified by 7.1.11.1 through 7.1.11.14.
Requirement 2.11.1 does not apply. All hoistway landing openings shall be provided with entrances that shall guard the full height and width of the opening.
For power dumbwaiters, the doors shall not open to a 25 mm (1 in.) greater width and height than the width and height of the car, unless the car is being removed or installed.
Requirement 2.11.2 does not apply.
For power dumbwaiters, entrances shall be one of the following types:
(a) horizontal slide, single- or multisection
(b) swing, single-section
(c) combination horizontal slide and swing
(d) vertical slide biparting counterbalanced
(e) vertical slide counterweighted, single- or multisection
Requirement 2.11.3 does not apply.
For power dumbwaiters, all doors shall be kept closed, except the door at the floor at which the car is being loaded or unloaded.
Requirement 2.11.4 does not apply.
The bottom of the hoistway door opening shall be not less than 600 mm (24 in.) above the floor, except for power dumbwaiter applications conforming to 7.1.12.1.2 or 7.1.12.1.3.
Horizontally sliding or swinging doors shall be located so that the distance from the hoistway face of the doors to the edge of the hoistway landing sill, measured from the face of the door section nearest to the car, shall not be more than 75 mm (3 in.) for horizontally sliding or single-section swinging doors.
Access openings shall be permitted to be provided in the hoistway enclosure for maintenance and inspection. Access openings, when provided, shall conform to 7.1.7.5.
Requirement 2.11.5 does not apply.
Requirement 2.11.6 does not apply.
Hoistway door vision panels (see 2.11.7) are not required. Where provided, they shall comply with 2.11.7.1.2 through 2.11.7.1.4 and 2.11.7.1.6, and the total area of one or more vision panels in any hoistway door shall not exceed 0.016 m2 (25 in.2).
Requirement 2.11.10.1 does not apply.
Requirement 2.11.11.1(b) does not apply.
Landing sills shall be metal, securely fastened to the frame or building structure, and of sufficient strength to support the rated load of the dumbwaiter, applied vertically over an area 100 mm × 100 mm (4 in. × 4 in.) at the center of the sill, with no permanent displacement or deformation of the sill.
Either the panel guide rails or the jambs used to frame the opening shall be securely anchored to a masonry wall, or securely fastened to the building structure or wall-supporting members.
Panel guide rails not fastened in conformance with 7.1.11.12.2 shall be securely fastened to the jambs at intervals throughout the frame height and shall be permitted to be fastened to the building structure where the rails extend past the frame. Rails and their fastenings shall withstand the forces specified in 7.1.11.12.1, and any reactions resulting from the loading and unloading operations that are capable of being transmitted to the rails.
Requirement 2.11.12.4.2 applies only where truckable sills are required.
Requirements 2.11.12.4.3(a) and 2.11.12.4.3(b) do not apply. Panels of biparting counter-balanced entrances shall conform to the following:
(a) They shall be provided with means to stop the closing panels when the distance between the closing rigid members of the upper and lower panels is not less than 20 mm (0.8 in.).
Requirement 2.11.12.4.4 applies, except that the overlap shall be not less than 13 mm (0.5 in.).
Requirement 2.11.12.4.6 does not apply. The entrance assembly shall be capable of withstanding a force of 1110 N (250 lbf) applied on the landing side at right angles to, and approximately at the center of a panel. This force shall be distributed over an area approximately 100 mm × 100 mm (4 in. × 4 in.). There shall be no appreciable permanent displacement or deformation of any parts of the entrance assembly resulting from this test.
Requirement 2.11.12.5.3 does not apply. Guide members shall be designed to withstand the forces specified in 7.1.11.12.7.
Requirements 2.11.13.1(b) and 2.11.13.3.3 do not apply.
Requirement 2.11.13.3.5 does not apply. The panels and their assembled accessories shall be capable of withstanding normal attempts to open a closed and locked door by pulling the handle. The panel shall be designed to withstand a force of 1110 N (250 lbf) applied on the landing side at right angles to and approximately at the center of the panel. This force shall be distributed over an area approximately 100 mm × 100 mm (4 in. × 4 in.). There shall be no appreciable permanent displacement or deformation of any parts of the entrance assembly resulting from this force.
Requirement 2.11.13.3.7 applies, except it shall be in conformance with 7.1.11.13.1.
Requirement 2.11.15.1.1(c) does not apply.
Requirement 2.11.15.1.2(b) applies, except it shall be in conformance with 2.11.11.5.1 and 2.11.11.5.2 or 7.1.11.12.6.
Hoistway door locking devices, access switches, and unlocking devices shall comply with 7.1.12. Section 2.12 does not apply, except as referenced in 7.1.12.
Hoistway door locking devices for power dumbwaiters shall comply with 7.1.12.1.1 through 7.1.12.1.3.
Hoistway door interlocks in conformance with 7.1.12.1.3 are required at all landings, except that hoistway door combination mechanical locks and electric contacts conforming to 7.1.12.1.2 shall be permitted to be used at landings where the bottom of the door opening is 600 mm (24 in.) or more above the floor.
Hoistway door combination mechanical locks and electric contacts, where provided, shall conform to the following:
(a) requirement 2.12.3.2
(b) requirement 2.12.3.3
(c) requirement 2.12.3.4, except that
(1) requirement 2.12.3.4.4 applies to all types of multisection doors
(2) requirement 2.12.3.4.5 applies, but the force used should be 225 N (50 lbf)
(d) requirement 2.12.3.5
(e) requirement 2.12.4
(f) they shall be arranged so that the hoistway door is locked when the car is more than 75 mm (3 in.) from the landing
Hoistway door interlocks, where provided, shall conform to the following:
(a) where the rated speed of the dumbwaiter is greater than 0.5 m/s (100 ft/min)
(1) requirement 2.12.2.2
(2) requirement 2.12.2.3
(3) requirement 2.12.2.4, except that
(-a) requirement 2.12.2.4.1 does not apply
(-b) requirement 2.12.2.4.6 applies, but the force used shall be 225 N (50 lbf)
(4) requirement 2.12.2.5
(5) requirement 2.12.2.6
(6) requirement 2.12.4
(b) where the rated speed of the dumbwaiter is less than or equal to 0.5 m/s (100 ft/min)
(1) requirement 2.12.2.2.
(2) the operation of a dumbwaiter driving machine when a hoistway door is not in the closed position (see 2.12.2.2) shall be permitted by a car-leveling device (see 7.2.12.6), a hoistway access switch (see 7.1.12.4), or an anticreep device (see 7.3.11.3). The operation of a dumbwaiter driving machine when a hoistway door is unlocked but in the closed position shall be permitted by a car-leveling device, a hoistway access switch, or an anticreep device, or by the normal operating device when the car is within 75 mm (3 in.) above or below the landing. Hoistway door close contacts (see 7.2.12.31) shall be provided when the driving machine is operated with the hoistway door or gate unlocked but in the closed position. The hoistway door close contacts shall be positively opened by the opening action of the door or gate. They shall be maintained in the open position by the action of gravity or by a restrained compression spring, or by both, or by a positive mechanical means.
(3) requirement 2.12.2.4, except that
(-a) requirement 2.12.2.4.1 does not apply.
(-b) requirement 2.12.2.4.3 does not apply. The interlock shall lock the door in the closed position with a minimum engagement of 7 mm (0.28 in.) of the locking members before the interlock contacts are closed and before the driving machine can be operated except as permitted by (2).
(-c) requirement 2.12.2.4.6 applies, but the force used shall be 225 N (50 lbf).
(4) requirement 2.12.2.5.
(5) requirement 2.12.2.6.
(6) requirement 2.12.4.
Hoistway door unlocking devices conforming to 2.12.6.2.1, 2.12.6.2.2, 2.12.6.2.4, and 2.12.6.2.5 shall be provided at the top and bottom terminal landings.
Hoistway access switches shall be permitted at the top and bottom landings. Requirement 2.12.7 does not apply. Where hoistway access switches are provided, they shall conform to the following:
(a) Requirement 2.12.7.2 applies.
(b) Requirement 2.12.7.3 applies, except 2.12.7.3.2(b) does not apply.
The power operation, power opening, and power closing of hoistway doors and car doors or gates shall comply with Section 2.13, except as modified by 7.1.13.1 through 7.1.13.9.
Requirement 2.13.2.1.2 does not apply.
Requirement 2.13.2.2.3 does not apply.
Requirements 2.13.3.2.3 and 2.13.3.2.4 do not apply. A closing means shall not be provided in the car.
Requirement 2.13.3.3.2 does not apply.
Requirement 2.13.3.4.2 does not apply; sequence operation is not required, however, if provided, it shall conform to 2.13.6.1. Requirement 2.13.3.4.3 does not apply when the only means for controlling the door is by a momentary-pressure switch at the landing within sight of the door, that, when operated, shall cause the doors to stop or to stop and reopen. Requirement 2.13.3.4.4 does not apply.
Requirement 2.13.4 also applies to power-operated vertically sliding doors. Requirements 2.13.4.2.3 and 2.13.4.2.4 do not apply.
Requirement 2.13.5 applies only to power-operated hoistway doors and car doors or gates where closing is by automatic means. Requirement 2.13.5.2(b) does not apply.
Section 2.29 does not apply. When the machinery of more than one dumbwaiter is in the machine room, each driving machine shall be assigned a different number that shall be painted on or securely attached to the driving machine.
Section 7.2 applies to electric dumbwaiters without automatic transfer devices.
Car enclosures and car doors and gates shall comply with Section 2.14, except as modified by 7.2.1.1 through 7.2.1.3.
Requirement 2.14.1.2 does not apply. The enclosure shall be securely fastened to the car platform or the point of suspension.
Requirement 2.14.1.3 does not apply. The car enclosure walls shall be solid, grille, or perforated construction. Car enclosure walls shall be of such strength and designed and supported so that when subjected to a leaning or falling rated load on the car, the car enclosure walls will not deflect or deform to the extent that the running clearances are reduced below the minimum specified in 7.1.5. Grilled or perforated portions of the enclosure shall reject a ball 38 mm (1.5 in.) in diameter. Nonmetal cars shall be reinforced with metal from the bottom of the car to the point of suspension. Metal car sections shall be riveted, welded, or bolted together. Cars shall be permitted to be provided with hinged, permanent, or removable shelves. The maximum inside height of the car at any point shall not exceed 1220 mm (48 in.) (see also 7.2.3). Hinged or removable panels shall not be provided in car tops.
Requirement 2.14.1.6 does not apply. Car tops shall be capable of sustaining a load of 3.5 kPa (75 lbf/ft2) without permanent deformation. The resulting deflection under this load shall be limited to prevent damage to any equipment, device, or lighting assemblies fastened to or adjacent to the car enclosure top.
Requirement 2.14.1.7.1 does not apply.
Requirement 2.14.2 does not apply. Vision panels are not required. Where vision panels are provided, the perforated portions shall reject a ball 38 mm (1.5 in.) in diameter. Glass vision panels shall be either laminated or wire glass and shall not exceed 0.016 m2 (25 in.2).
Requirement 2.14.3 does not apply.
Car doors or gates shall be provided at entrances to the car, shall guard the full width of the opening, and shall conform to 7.2.1.2.1 through 7.2.1.2.12.
Requirement 2.14.4.4 does not apply. Gates shall be the horizontally sliding collapsible type or the vertically sliding type.
(a) Horizontally sliding collapsible gates shall conform to the following:
(1) They shall not be power operated, except as permitted by 2.13.2.1.2.
(2) They shall not be used with power-operated vertically sliding hoistway doors.
(3) When fully closed (extended position), they shall reject a ball 113 mm (4.5 in.) in diameter.
(4) They shall have at least every fourth vertical member guided at the top and every second vertical member guided at the bottom.
(5) Collapsible gate handles shall be provided with finger guards.
(b) Vertically sliding gates shall conform to the following:
(1) They shall be the balanced counterweighted type or the biparting counterbalanced type.
(2) They shall reject a ball 50 mm (2 in.) in diameter.
(3) Balanced counterweighted gates shall be permitted to be either single- or multisection and shall be permitted to slide either up or down to open.
(4) They shall be permitted to be either manually or power operated.
Requirement 2.14.4.9 does not apply. Suspension members of vertically sliding car doors or gates, and of weights used with car doors or gates, shall have a factor of safety not less than 5.
Requirement 2.14.5 does not apply.
Requirement 2.14.6 does not apply.
Car frames and platforms shall comply with Section 2.15, except as modified by 7.2.2.1 through 7.2.2.14.
Requirement 2.15.2 does not apply. Cars shall be guided on each guide rail by upper and lower guiding members.
Requirement 2.15.5 does not apply. The car shall be provided with a platform capable of withstanding the loading conditions for which the dumbwaiter is designed.
Requirements 2.15.6.1.2 and 2.15.6.1.3 do not apply. Requirements 2.15.6.1.1 and 2.15.6.1.4 apply only where car frames and car platform frames are used.
Requirement 2.15.9 does not apply. Leveling devices are not required. Guards shall be provided to close any opening to the hoistway above and below the car that occurs when leveling or inching devices are operated with the hoistway door(s) in the open position.
The guards shall
(a) be located on the entrance side of the car
(b) extend the full width of the car
(c) be made of smooth metal plates of not less than 1.5 mm (0.059 in.) thick steel or material of equivalent strength and stiffness and be braced to the car
The guards shall have a straight vertical face, extending not less than the following:
(a) for the car platform guard, the maximum length of the car travel in the up direction permitted by the car-leveling or inching device as installed, plus 13 mm (0.5 in.)
(b) for car head guard, the maximum length of the car travel in the down direction permitted by the car-leveling or inching device as installed, plus 13 mm (0.5 in.)
Section 2.16 does not apply to dumbwaiters.
The rated load shall be not less than 221 kg/m3 (13.9 lb/ft3) of the inside net car volume. The inside net platform area shall be not more than 1 m2 (10.75 ft2).
A capacity plate shall be fastened in a conspicuous place in the car. The plate shall be such material and construction that the letters and figures stamped, etched, cast, or otherwise applied to the face shall remain permanently and readily legible. The plate shall indicate the rated load in letters and numerals not less than 6 mm (0.25 in.) high.
The data plate shall indicate
(a) the weight of the complete car, including the car safety and all auxiliary equipment attached to the car
(b) the rated load and rated speed
(c) the suspension means (see 7.2.6)
(d) the manufacturer's name and the date of installation
The letters and numerals on the data plate shall be not less than 3 mm (0.125 in.) high and stamped, etched, or raised on the surface of the plate.
A sign stating "NO RIDERS" shall be located in the car in letters not less than 13 mm (0.5 in.) high.
Car and counterweight safeties, where provided, shall conform to Section 2.17, except as modified by 7.2.4.1 through 7.2.4.8.
Requirement 2.17.7 does not apply. Car and counterweight safeties shall be actuated by speed governors or as a result of breaking or slackening of the suspension means, and shall be permitted to be the inertia type without governors.
Every car safety shall be provided with a switch, operated by the car safety mechanism. This switch shall conform to 2.18.4, except that the switch does not have to be on the safety, provided that it is operated by the action of the safety.
Requirement 2.17.8 applies, except that Type A safeties shall be permitted to be used regardless of the rated speed.
Requirement 2.17.16 applies only where safeties are provided.
Speed governors are not required. Where provided, they shall conform to Section 2.18, except that the diameter of the governor rope (see 2.18.5.1) shall be permitted to be less than 9.5 mm (0.375 in.); however, it shall be not less than the diameter of the suspension ropes.
Requirement 2.20.1 does not apply.
(a) Cars and counterweights for power dumbwaiters, except for dumbwaiters having rack-and-pinion or screw-type driving machines, shall be suspended by one or more iron or steel-wire hoisting ropes or chains.
(b) Wire ropes shall be permitted to have marlin covers.
(c) Chains, where used, shall be roller, block, or multiple-link silent type.
Requirement 2.20.2 only applies to dumbwaiters suspended by wire or non-wire rope. The information required in 2.20.2.1 shall be located on the car crosshead, on the car top, or inside the car. Requirement 2.20.2.2.2(j) does not apply.
The data plate required by 7.2.3.3 shall bear the following chain data:
(a) number of chains
(b) type of chains
(c) standard chain number
(d) the manufacturer's minimum ultimate tensile strength per chain in pounds
A metal data tag shall be securely attached to one of the chain fastenings. This data tag shall bear the following chain data:
(a) type of chain
(b) standard chain number
(c) manufacturer's minimum ultimate tensile strength
(d) month and year the chains were installed
(e) name of the person or firm who installed the chains
(f) name of the manufacturer of the chains
Requirement 2.20.3 does not apply. The factor of safety, based on the static load, of car and counterweight suspension means shall be not less than the value specified in Table 7.2.6.4 for the actual speed of the rope or chain corresponding to the rated speed of the dumbwaiter.
| Rope or Chain Speed, m/s (ft/min) | Factor of Safety | |
|---|---|---|
| Ropes | Chains | |
| 0.25 (50) | 4.8 | 6.0 |
| 0.50 (100) | 5.2 | 6.5 |
| 0.75 (150) | 5.5 | 6.9 |
| 1.00 (200) | 5.9 | 7.4 |
| 1.25 (250) | 6.2 | 7.8 |
| 1.50 (300) | 6.6 | 8.3 |
| 1.75 (350) | 7.0 | 8.8 |
| 2.00 (400) | 7.3 | 9.1 |
| 2.25 (450) | 7.7 | 9.6 |
| 2.50 (500) | 8.0 | 10.0 |
Requirement 2.20.4 does not apply. The number of suspension ropes or chains shall be determined by multiplying the static load (weight of the car plus rated load plus weight of the hoisting ropes or chains) by the required factor of safety, and dividing the result by the manufacturer's
(a) rated ultimate strength of one of the ropes of the size and construction to be used
(b) minimum ultimate tensile strength of one of the chains of the size and construction to be used
Where 2:1 roping is used, one-half the static load shall be used in the formula.
Requirement 2.20.5 does not apply.
Requirement 2.20.8 does not apply.
Requirement 2.20.9.1 does not apply. Fastening of suspension means shall conform to the following:
(a) The car and counterweight ends of suspension wire ropes, or the stationary hitch-ends where multiple roping is used, shall be fastened in such a manner that all portions of the rope, except the portion inside the rope sockets, shall be readily visible. Fastenings shall be by individual tapered babbitted rope sockets conforming to 2.20.9.3 through 2.20.9.6; or by other types of rope fastening, provided that they develop at least 80% of the ultimate breaking strength of the strongest rope to be used in such fastenings.
(b) The fastening of car and counterweight ends of suspension chains shall be such as to develop at least 80% of the minimum ultimate tensile strength of the strongest chain used in such fastenings.
Requirement 2.21.1.1 does not apply. Frames are not required. Counterweights shall be permitted to be solid or sectional in design.
Requirement 2.21.1.3 does not apply. Counterweights shall be guided on each guide rail by upper and lower guiding members.
Requirement 2.21.1.4 does not apply. The same set of guide rails shall be permitted to be used for both the car and the counterweight.
Requirement 2.21.2.5 does not apply. Ropes and chains shall be secured to the counterweight or suspension rope hitch conforming to 7.2.6.
Spring buffers shall conform to 2.22.3, except that Table 2.22.3.1 shall be replaced by Table 7.2.8.1. Spring buffers, where required by 7.1.6, shall not be used for rated speeds greater than 1.5 m/s (300 ft/min).
| Rated Speed, m/s (ft/min) | Stroke, mm (in.) |
|---|---|
| 1.00 or less (200 or less) | 40 (1.5) |
| 1.01—1.25 (201—250) | 65 (2.5) |
| 1.26—1.50 (251—300) | 100 (4.0) |
Oil buffers shall conform to 2.22.4, except that Table 2.22.4.1 shall be replaced by Table 7.2.8.2.
| Rated Speed, m/s (ft/min) | Stroke, mm (in.) |
|---|---|
| 1.50 (300) | 70 (2.75) |
| 1.60 (325) | 90 (3.50) |
| 1.75 (350) | 110 (4.25) |
| 2.00 (400) | 160 (6.25) |
| 2.25 (450) | 210 (8.25) |
| 2.50 (500) | 280 (11.00) |
| 2.75 (550) | 350 (13.75) |
| 3.00 (600) | 430 (17.00) |
| 3.50 (700) | 630 (24.75) |
| 4.00 (800) | 845 (33.25) |
| 4.50 (900) | 1110 (43.75) |
| 5.00 (1,000) | 1410 (55.50) |
Car and counterweight guide rails, guide-rail supports, and their fastenings shall comply with Section 2.23, except as modified by 7.2.9. The same set of guide rails shall be permitted to be used for both the car and the counterweight.
Requirements 2.23.3, 2.23.7.2.1(a), 2.23.7.2.1(b), 2.23.7.2.1(e), 2.23.9.1.3, 2.23.9.3, and 2.23.10.2 do not apply. Guide rails, supports, joints, fishplates, and fastenings that are not covered by Section 2.23 shall be permitted to be used, provided that the strengths, stresses, and deflections are consistent with the requirements of Section 2.23 for the loads to be imposed.
Where guide-rail sections other than those specified in 2.23.3(a) are used, the allowable deflection of the guide rail shall be limited to prevent the safety device from disengaging the rail during the application of the load.
Driving machines and sheaves for power dumbwaiters shall conform to Section 2.24 as modified by 7.2.10.1.1 through 7.2.10.1.3.
Requirement 2.24.1 does not apply.
Requirement 2.24.2.2 does not apply. Sheaves and drums shall have a pitch diameter not less than 30 times the diameter of the rope.
Requirement 2.24.8 does not apply. The driving machine shall be equipped with a friction brake applied by a spring or springs, or by gravity, and electro-mechanically or electrohydraulically released. The brake shall be designed to have a capacity sufficient to hold the car at rest with its rated load (also see 7.2.3.1).
Driving machines shall be one of the following types:
(a) winding-drum
(b) traction
(c) rack and pinion, conforming to 4.1.24
(d) screw-column, conforming to 4.2.15
(e) belt drive
(f) chain drive
(g) hydraulic, conforming to Section 7.3
Belts used as the driving means between the motor and the machine of power dumbwaiters shall conform to 7.2.10.4.1 and 7.2.10.4.2.
Where flat belts are used, the rated speed of the dumbwaiter shall be not more than 0.25 m/s (50 ft/min).
Where multiple V-belts are used, the rated speed of the dumbwaiter shall be not more than 0.75 m/s (150 ft/min).
Terminal stopping devices shall conform to Section 2.25, except as specified in 7.2.11.1 through 7.2.11.4.
Requirement 2.25.2.2.2 does not apply.
Requirement 2.25.3.3 does not apply. Final terminal stopping devices shall be provided in the hoistway and shall be directly operated by the movement of the car.
Requirement 2.25.3.5 does not apply. Where final terminal stopping switches are located on and operated by the driving machine, they shall comply with 2.25.3.5.
Operating devices of power dumbwaiters shall be the automatic or continuous-pressure type. Operating devices and control equipment shall comply with Section 2.26, except as modified by 7.2.12.1 through 7.2.12.40.
Requirement 2.26.1.4 does not apply. Top-of-car operating devices are not required. Where provided, they shall conform to 7.2.12.4.1 and 7.2.12.4.2, and the installation shall also comply with 7.2.12.4.3.
Requirement 2.26.1.4.2 applies. Requirement 2.26.1.4.1(d)(2) applies, except that it shall be subject to the electrical protective devices required by 7.2.12.
Safeties shall be provided in accordance with 7.2.4.
A hoistway access switch conforming to 7.1.12.4 shall be provided for access to the top of the car.
Requirement 2.26.1.6 applies, except that the devices shall be located at that landing, car platform guards shall conform to 7.2.2.8, and landing-sill guards are not required.
In jurisdictions not enforcing the NBCC, 2.26.2.8 does not apply. Where a top-of-car operating device is provided, a stop switch conforming in design and operation to 2.26.2.5(a) through 2.26.2.5(c) shall be provided on the top of the car.
In jurisdictions enforcing the NBCC, 2.26.2.8 does not apply, except that for platform areas in excess of 0.5 m2 (5.38 ft2) or where a top-of-car operating device is provided, a stop switch conforming in design and operation to 2.26.2.5(a) through 2.26.2.5(c) shall be provided on the top of the car.
Requirement 2.26.2.10 applies only where a speed governor is provided.
Requirement 2.26.2.15 does not apply. Car door or gate electric contacts, conforming to 7.2.1.2.2, shall be provided for all dumbwaiters.
Hoistway door close contacts conforming to 7.1.12.1.3(b)(2) shall be provided for all dumbwaiters that can be operated with hoistway doors closed but not locked within 75 mm (3 in.) above or below a landing and that are provided with interlocks. These contacts are electrical protective devices.
Requirement 2.26.4.3 does not apply. The following switches shall have contacts that are positively opened mechanically; their opening shall not be solely dependent on springs:
(a) stop switch in the pit (see 2.26.2.7)
(b) stop switch on top of the car (see 2.26.2.8)
(c) car safety mechanism switch (see 2.26.2.12)
(d) speed governor overspeed switch (see 2.26.2.10)
(e) final terminal stopping device (see 7.2.11)
Requirement 2.26.6 applies. When single phase AC motors are provided, they shall come to a complete stop before electrically reversing direction.
Requirements 2.26.9.3.1(c) through 2.26.9.3.1(e) do not apply.
Requirements 2.26.9.3.2 and 2.26.9.4 do not apply.
Section 2.27 does not apply.
The information provided on layout data shall conform to Section 2.28, except that 2.28.1(c) and 2.28.1(d) do not apply. Requirement 2.28.1(b) applies only where safeties are provided.
Section 8.8 applies, except for tack welds and other non-load-carrying welds.
Section 7.3 applies to hydraulic dumbwaiters without automatic transfer devices.
Requirement 7.2.1 applies to hydraulic dumbwaiters.
Requirement 7.2.2 applies to hydraulic dumbwaiters.
Requirement 7.2.3 applies to hydraulic dumbwaiters.
The safety shall be a type that can be released only by moving the car in the up direction.
The switches required by 2.18.4.1 shall, when operated, remove power from the driving-machine motor and control valves before or at the time of application of the safety.
Counterweight safeties, where provided (see 7.1.6), shall conform to 7.2.4, provided that safeties are operated as a result of the breaking or slackening of the counterweight suspension ropes, irrespective of the rated speed of the dumbwaiter.
Jacks shall conform to Section 3.18; valves, pressure piping, and fittings shall conform to Section 3.19; and hydraulic machine and tanks shall conform to Section 3.24.
The wire ropes and their connections, where provided, shall conform to 7.2.6.
Sheaves, where provided, shall conform to 7.2.10.
Welding shall conform to 7.2.14.
Requirement 7.2.7 applies to hydraulic dumbwaiters where counterweights are provided.
Requirements 7.2.8.1 and 7.2.8.2 apply to hydraulic dumbwaiters, except the term "maximum speed in the down direction with rated load" shall substitute for the term "rated speed."
Requirement 7.2.8 applies to hydraulic dumbwaiters.
Where counterweights are provided for hydraulic dumbwaiters, counterweight bumpers or buffers shall not be provided.
Requirement 7.2.9 applies to hydraulic dumbwaiters.
Direct-plunger and roped-hydraulic dumbwaiter terminal stopping devices shall conform to the requirements of Section 3.25.
Requirement 7.2.12.1 applies to hydraulic dumbwaiters.
Requirement 7.2.12.4 applies to hydraulic dumbwaiters.
Each dumbwaiter shall be provided with an anticreep leveling device conforming to 7.3.11.3.1 through 7.3.11.3.4.
The anticreep leveling device shall maintain the car within 25 mm (1 in.) of the landing irrespective of the position of the hoistway door.
For electrohydraulic dumbwaiters, the anticreep leveling device shall be required to operate the car only in the up direction.
For maintained-pressure hydraulic dumbwaiters, the anticreep leveling device shall be required to operate the car in both directions.
The operation of the anticreep leveling device shall be permitted to depend on the availability of the electric power supply, provided that
(a) the power supply line disconnecting means required by 7.3.11.7 is kept in the closed position at all times except during maintenance, repairs, and inspection
(b) the electrical protective devices required by 7.3.11.4.2 shall not cause the power to be removed from the device
Electrical protective devices conforming to 7.2.12 shall be provided.
The following devices shall prevent operation of the dumbwaiter by the normal operating device and also the movement of the car in response to the anticreep leveling device:
(a) stop switches in the pit
(b) stop switches on top of the car
(c) slack-rope switch when required by 3.18.1.2.5
(d) speed governor switch when required by 7.2.5
The following devices, when actuated, shall prevent the operation of the dumbwaiter by the normal operating device, but the anticreep leveling device required by 7.3.11.3 shall remain operative:
(a) broken rope, tape, or chain switches on normal stopping devices when such devices are located in the machine room or overhead space
(b) hoistway door interlocks or hoistway door contacts
(d) hinged car platform sill electric contacts
All electrical equipment and wiring shall conform to the requirements of NFPA 70 or CSA C22.1, whichever is applicable (see Part 9).
Electrical equipment shall be listed/certified and labeled/marked. CSA B44.1/ASME A17.5 defines the scope and applicable requirements for this listing/certification.
Requirement 2.26.7 applies to hydraulic dumbwaiters.
Requirement 3.26.7 applies to hydraulic dumbwaiters.
Requirement 3.26.8 applies to hydraulic dumbwaiters.
Requirement 7.2.12.40 applies to hydraulic dumbwaiters.
The information provided on layout data shall conform to Section 3.28, except as modified in 7.3.12.1 through 7.3.12.3.
Section 7.4 applies to material lifts without automatic transfer devices.
Material lifts shall be operated by authorized personnel only.
Material lifts without automatic transfer devices are classified as either Type A or Type B material lifts.
Type A material lifts shall be controlled from landing-mounted operating devices only. Car-mounted operating devices shall not be permitted. A Type A material lift is a materials-only device, and riders shall not be permitted.
Type B material lifts shall be permitted to carry one operator and be provided with in-car-mounted operating devices, subject to the following limitations:
(a) Access to and use of Type B material lifts is restricted to authorized personnel.
(b) The rated speed shall not exceed 0.15 m/s (30 ft/min).
(c) Travel shall not exceed 7.6 m (25 ft).
(d) Type B material lifts are operated only by continuous-pressure control devices.
(e) They shall not be accessible to the general public.
(f) The upper limit of travel shall be either
(1) level with the top penetrated floor
(2) level with the top landing where no floor is penetrated
The construction of hoistway enclosures shall conform to Section 2.1, except that requirement 2.1.1.2.2(e) does not apply. Glass hoistway construction is not permitted.
Where fire-resistive construction is not required, 2.1.1.2 does not apply for Type B material lifts. Type B material lifts shall conform to the following:
(a) Hoistway and top landing enclosures shall be provided in compliance with Table 7.4.3.
(b) Where openwork construction is permitted, it shall reject a 25 mm (1 in.) diameter ball and shall include toe-boards at least 125 mm (5 in.) high.
(c) Enclosures shall not deflect more than 20 mm (0.75 in.] when a concentrated force of 340 N (75 lbf) is applied at the center of any panel.
(d) No section or part of a top landing enclosure shall be lower than the corresponding and adjacent part of the platform enclosure when the platform is at the top landing.
Table 7.4.3 Type B Material Lifts
| Item | Minimum Requirements | Requirement Reference | |
|---|---|---|---|
| Enclosures | 7.4.3, 7.4.13 | ||
| Hoistway [Note (1)] | |||
| Sides: | height | Fully enclosed below top landing | |
| construction | Openwork | ||
| Gate: | height | 2030 mm (80 in.) | |
| construction | Openwork | ||
| Top landing [Note (1)] | 7.4.3, 7.4.13 | ||
| Sides: | height | 2030 mm (80 in.) | |
| construction | Openwork | ||
| Gate: | height | 2030 mm (80 in.) | |
| construction | Openwork | ||
| Car | 7.5.1 | ||
| Sides: | height | 2030 mm (80 in.) | |
| construction | Openwork | ||
| Gates | None | ||
| Clearances | 7.4.14 | ||
| Nonaccess side to car | 20 mm (0.75 in.) min. | 2.5.1.1 | |
| Car sill to door sill | 13 mm (0.50 in.) min. | 2.5.1.4 | |
| 32 mm (1.25 in.) max. | 2.5.1.4 | ||
| Car sill to hoistway | 125 mm (5 in.) max. | 2.5.1.5.1(b) | |
| In jurisdictions enforcing the NBCC | 190 mm (7.5 in.) max. | 2.5.1.5.1(a) | |
| Landing/Car Controls | CPPB with emergency stop | 7.5.12.2 | |
NOTE: (1) Non-fire-resistive construction.
Pits shall conform to Section 2.2, except for Type B material lifts where the pit depth is 600 mm (24 in.) or less.
Section 2.3 applies only when the car rated speed exceeds 0.5 m/s (100 ft/min).
Where the car rated speed is 0.5 m/s (100 ft/min] or less, counterweight guards conforming to 2.3.2 shall not be required, provided the installation conforms to either 7.4.5.1 or 7.4.5.2.
A chain loop or equivalent shall be hung from the bottom of the counterweight to the bottom of the car.
For Type A material lifts, bottom and top car clearances and runbys for cars and counterweights shall conform to 7.4.6.1.1 through 7.4.6.1.4.
When the car reaches its maximum limit of downward travel, no part of the car or counterweight or any equipment attached thereto shall strike any part of the pit or floor beneath the lowest landing or equipment located in the hoistway, except a buffer or bumper, and no part of the counterweight or any equipment attached thereto shall strike any part of the overhead structure or equipment located in the hoistway, except a mechanical stop or buffer.
When the car reaches its maximum limit of upward travel, no part of the car or counterweight or any equipment attached thereto shall strike any part of the overhead structure or equipment located in the hoistway, except a mechanical stop or buffer, and no part of the counterweight or any equipment attached thereto shall strike any part of the pit or floor beneath the lowest landing or equipment located in the hoistway, except a mechanical stop or buffer.
When complete or partial entry into the pit is required for maintenance or inspection and the car is resting on its fully compressed buffer or bumper where the distance from the underside of the car platform to the pit access door sill, when provided, is less than 460 mm (18 in.] or the pit floor is less than 920 mm (36 in.], a nonremovable means shall be provided to mechanically hold the car above the pit floor to provide an area in the pit for maintenance and inspection conforming to the following:
(a) It shall hold the car at a height not less than 920 mm (36 in.] nor more than 2030 mm (80 in.] above the pit floor and not less than 460 mm (18 in.] above the bottom landing sill or pit access door sill, as measured from the underside of the car platform.
(b) The means shall be designed and constructed to stop and hold the car at governor tripping speed with the rated load in the car.
(c) It shall not cause the stresses and deflections in the car frame and platform members and their connections to exceed the limits specified in 2.15.10 and 2.15.11.
(d) If the means does not automatically activate when the lowest hoistway door or pit access door is opened with the car not at the landing
(1) it shall be capable of being operated without complete bodily entry into the pit.
(2) a sign shall be conspicuously displayed inside the hoistway. The sign shall include a warning that there is insufficient bottom car clearance and instructions for operating the device. The sign shall also warn that the power source must be disconnected. The letters shall be not less than 25 mm (1 in.] in height.
The top-of-car clearance shall comply with 2.4.7. If a 1100 mm (43 in.) vertical distance is not available when the car has reached its maximum upward movement, a stopping device shall be provided that shall be functional when the car is under the control of the top-of-car operating device and shall be located in the hoistway to maintain the minimum vertical distance of 1100 mm (43 in.).
For Type B material lifts, bottom and top car clearances and runbys for cars and counterweights shall conform to 7.4.6.2.1 through 7.4.6.2.3.
Except as required by 7.4.6.2.3, the minimum overhead clearance when the platform is at the top landing shall be
(a) 600 mm (24 in.) over the highest anticipated load
(b) 2000 mm (79 in.) over the empty platform
If a platform is equipped with a ceiling, it shall be solid and capable of sustaining a load of 360 kg/m2 (73 lb/ft2) equally distributed, or 45 kg (100 lb) at any point; and the clearance shall conform to 7.4.6.1.4. A stop switch conforming to 7.5.12.2.7 shall be provided on the top of the car.
Horizontal car and counterweight clearances shall conform to Section 2.5, except as modified by 7.4.7.1 through 7.4.7.4.
Requirement 2.5.1.1 applies, except that for Type A material lifts, the clearance between the car and the hoistway enclosure shall be not less than 13 mm (0.5 in.). For Type B material lifts, the clearance between the car and the hoistway enclosure shall be not less than 50 mm (2 in.).
Requirement 2.5.1.2 applies, except that the clearance between the car and the counterweight, and between the counterweight and the hoistway enclosure shall be not less than 13 mm (0.5 in.).
Requirements 2.5.1.4 and 2.5.1.5.1 apply, except where a counterbalanced car door is provided, the clearance shall be measured from the landing side of the car door sill rather than from the car platform sill.
Any projections on the access side of the hoistway wall that are in excess of 6 mm (0.25 in.) shall be beveled.
Where beveling is required, it shall be at an angle not less than 60 deg from horizontal (see Nonmandatory Appendix K).
Protection of spaces below the hoistway shall conform to Section 2.6. Where safeties are required, they shall conform to 7.5.4. Where buffers are required, they shall conform to 7.5.8.
Type B material lifts shall conform to 7.4.8, or the floor shall be designed and constructed to safely support the maximum load that would be applied to it by a free-falling platform that is carrying its rated load.
Machinery spaces, machine rooms, control spaces, and control rooms shall conform to Section 2.7 except as modified in 7.4.9.1 through 7.4.9.3. Section 2.7 does not apply to Type B material lifts.
Requirement 27.3.4.6 applies to Type A material lifts except the maximum width.
Requirement 2.7.4 does not apply to Type A material lifts.
Requirement 2.7.5 does not apply to Type A material lifts, except 2.7.5.1 applies only to Type A material lifts where a machine room is provided and full bodily entry is necessary. If maintenance or inspections of the material lift driving-machine brake or an emergency brake or of material lift motion controllers or motor controllers located in the hoistway is to be carried out from inside the car or from the car top, a means shall be provided to prevent uncontrolled and unexpected vertical car movement that poses a hazard to maintenance or inspection personnel. If maintenance or inspections of the material lift driving-machine brake or an emergency brake or of material lift motion controllers or motor controllers is to be carried out from the pit, a mechanical device shall be provided to stop the car to create a vertical clearance as required by 7.4.6.1.3. A platform located in the car, on the car, or in the hoistway shall be permitted for access to and maintenance and inspection of equipment in machinery spaces or control spaces in the hoistway and shall comply with 2.7.5.3.1 through 2.7.5.3.4.
Electrical equipment, wiring, pipes, and ducts in hoistways and machine rooms shall conform to Section 2.8, except as modified by 7.4.10.1 through 7.4.10.3.
Type SF or equivalent wire is not required for the wiring to the hoistway door interlock from the hoistway riser.
Requirement 2.8.3.3 does not apply. Standard sprinkler protection conforming to NFPA 13 or the NBCC, whichever is applicable, shall be permitted to be installed in a material lift hoistway when all risers and returns are located outside the hoistway.
Requirement 2.8.1 does not apply to Type B material lifts.
Section 2.9 applies to Type A material lifts. Type B material lifts shall conform to 2.9.1.1, 2.9.2.2, 2.9.3.2, 2.9.3.3, and 2.9.4.
For Type B material lifts, where fire-resistive construction is not required, 7.4.13.1.1 through 7.4.13.1.3 shall apply.
The clear entrance height to the platform shall be a minimum of 2030 mm (80 in.).
For Type A and Type B material lifts where fire-resistive construction is required, the protection of hoistway landing openings shall conform to Section 2.11, except as modified by 7.4.13.2.1 through 7.4.13.2.10.
Requirement 2.11.1 does not apply. All hoistway entrances shall guard the full height and width of the openings. Entrance opening size for Type A material lifts shall not exceed 2290 mm (90 in.) in height and 1220 mm (48 in.) in width and shall not exceed the height and width of the car entrance opening.
Requirement 2.11.2 does not apply. Only the following types of entrances shall be used with material lifts:
(a) horizontal slide
(b) swing single-section only with manual load/unload material lifts
(c) vertical slide biparting counterbalanced
(d) vertical slide counterweighted single- or multisection
(e) center-opening, two-section, horizontally swing only with manual load/unload material lifts, subject to the restrictions of 2.11.2.3
Requirement 2.11.4 does not apply.
Requirement 2.11.6 does not apply. When the car is within the unlocking zone (see 2.12.1), the material lift hoistway doors shall be manually openable from within the car.
Requirement 2.11.7.1 applies, except that hoistway door vision panels are not required on Type A material lifts.
Requirement 2.11.7.2 does not apply.
Requirement 2.11.10.3 applies, except that car to landing bridging sills shall be permitted to be hinged on the lift and shall be permitted to form the bridge only when the hoistway doors are in the fully opened position.
Requirement 2.11.12 applies, except the pull straps required by 2.11.12.8 for Type A material lifts shall be mounted on the landing side of manually operated, vertically sliding doors.
Requirement 2.11.13.5 does not apply.
Hoistway door locking devices, hoistway door and car door or gate electric contacts, and hoistway access switches shall conform to Section 2.12, except as modified by 7.4.14.1 through 7.4.14.7.
Requirement 2.12.2.3 does not apply to Type B material lifts. The operation of a Type B material lift driving machine when a hoistway door or gate is not in the closed position (see 2.12.2.2) shall be permitted by a car-leveling or truck-zoning device (see 7.5.12.2.5), or by an anticreep device (see 7.6.8.2). The operation of a Type B material lift driving machine when a hoistway door or gate is unlocked but in the closed position shall be permitted by a car-leveling or truck-zoning device, by an anticreep device, or by continuous-pressure control devices located inside the car or at a landing when the car is within 75 mm (3 in.) above or below the landing. Hoistway door close contacts (see 7.5.12.2.18) shall be provided when the driving machine is operated with the hoistway door or gate unlocked but in the closed position. The hoistway door close contacts shall be positively opened by the opening action of the door or gate. They shall be maintained in the open position by the action of gravity or by a restrained compression spring, or by both, or by positive mechanical means.
Requirement 2.12.2.4.3 applies to Type B material lifts, except a device to permit operation of the driving machine when the door or gate is closed but before it is locked shall be permitted in accordance with 7.4.14.2.
Requirement 2.12.6 applies, except that unlocking devices are required at only the lowest and top landings.
Requirement 2.12.7 applies only to Type A material lifts.
Requirement 2.12.3 applies only to Type A material lifts. Combination mechanical lock and contacts are not permitted for Type B material lifts.
When provided, power operation, power opening, and power closing of hoistway doors and car doors and gates shall conform to Section 2.13, except as modified by 7.4.15.1 through 7.4.15.7.
Requirement 2.13.3.2.4 does not apply to Type A material lifts.
For Type A material lifts, a momentary-pressure switch shall be provided at each landing.
For Type A material lifts, in nonrestricted areas and restricted areas where the hoistway is accessible to personnel, all requirements of 2.13.3.4, except 2.13.3.4.2, apply. Requirement 2.13.3.4.4 applies, except that for Type A material lifts, a momentary-pressure button will not be provided in the car.
Requirement 2.13.4 does not apply to Type A material lifts.
Requirement 2.13.6 does not apply to Type A material lifts.
For Type A material lifts, no door operating buttons shall be in the car.
Requirement 2.29.1 applies.
Section 7.5 applies to electric material lifts without automatic transfer devices.
Car enclosures and car doors and gates shall conform to Section 2.14, except as modified by 7.5.1.1 through 7.5.1.3.
Requirement 2.14.1 applies, except
(a) for Type A material lifts
(1) the height of the enclosure walls shall not exceed 2280 mm (90 in.)
(2) the width of the enclosure shall not exceed 1220 mm (48 in.) unless the height of the enclosure is 1525 mm (60 in.) or less
(b) for Type B material lifts, the platform enclosure on nonaccess sides shall be 2030 mm (80 in.) high, shall be permitted to be openwork construction, and shall be in compliance with 7.4.3(b) through 7.4.3(d)
Requirement 2.14.1.3 does not apply. The car enclosure shall be of such strength and designed and supported so that when subjected to a leaning or falling rated load on the car, the car enclosure walls will not deflect or deform to the extent that the running clearances are reduced below the minimum specified.
Requirement 2.14.1.4 does not apply. Where the car enclosure contains multiple compartments, the rated load shall be the sum of the rated loads of the individual compartments.
Requirement 2.14.1.6 applies for Type A material lifts and for Type B material lifts where a car top is provided.
Requirement 2.14.1.7.1 does not apply for
(a) Type A material lifts
(b) Type B material lifts where a car top is not provided
Requirement 2.14.1.8 does not apply. Enclosures that incorporate glass in their construction are prohibited on material lifts.
Requirement 2.14.1.9 does not apply. Apparatus or equipment not used in connection with the function or use of the material lift shall not be installed inside any material lift car, except for lift hooks, conveyor tracks, and support beams for freight handling.
Requirement 2.14.1.10 does not apply.
Requirement 2.14.2 does not apply.
Requirement 2.14.3.1 does not apply. Perforated construction shall reject a ball 38 mm (1.5 in.) in diameter.
Requirement 2.14.3.3 does not apply. If ventilating grilles or louvers are provided in the enclosure, they shall reject a ball 38 mm (1.5 in.) in diameter.
Requirement 2.14.4.1 applies to Type A material lifts. It also applies to Type B material lifts where car doors or gates are provided.
Requirement 2.14.4.2 does not apply. Each door or gate shall be equipped with a contact that will prevent operation of the driving machine, unless the door or gate panel(s) is in the closed position as defined in 2.14.4.11. Operation of the driving machine when a car door or gate is not in the closed position is permissible
(a) by an inching, car-leveling, or truck-zoning device
(b) when a hoistway access switch is operated
Requirement 2.14.4.3 does not apply. Car doors shall be the horizontally or vertically sliding type and shall be solid, grille, or perforate construction. Perforated portions shall reject a ball 38 mm (1.5 in.) in diameter. Vertically sliding doors shall conform to 2.14.6.2.1 and 2.14.6.2.3. Balanced counterweighted vertically sliding doors shall be permitted to be either single or multiple section.
Requirement 2.14.4.4 does not apply. Car gates shall be the horizontally sliding collapsible type or the vertically sliding type. Horizontally sliding collapsible gates shall conform to 2.14.6.3.1, 2.14.6.3.2, and 2.14.6.3.4. Collapsible-type gates shall be permitted to be arranged to swing inward when in the fully opened (collapsed) position. Vertically sliding gates shall conform to 2.14.6.2.1 and 2.14.6.2.3, and shall be a design that will reject a ball 50 mm (2 in.) in diameter. Balanced counterweighted gates shall be permitted to be either single or multiple section.
Requirement 2.14.4.8 does not apply. Weights used to close or balance doors or gates shall run in guides or be boxed in. Guides shall be metal, and the bottom of the guides or boxes shall be constructed to retain the weights if the suspension member fails.
Car frames and platforms shall conform to Section 2.15, except as modified by 7.5.2.1 through 7.5.2.7.
Requirement 2.15.5 does not apply. The platform shall be designed to withstand the forces developed under the loading conditions for which the lift is designed and installed.
Requirements 2.15.6.1.2 and 2.15.6.1.3 do not apply.
Requirement 2.15.9.2 applies to Type A material lifts and Type B material lifts that operate in a leveling or truck zone in accordance with 7.5.12.2.5 only, except the minimum allowance of 1220 mm (48 in.) in 2.15.9.2(a) does not apply to Type A and Type B material lifts, and the minimum allowance of 525 mm (21 in.) in 2.15.9.2(b) does not apply to Type B material lifts.
Requirement 2.15.11 does not apply. For Type B material lifts, the vertical deflection of the platform when the rated load is in any position on the platform shall not exceed 5 mm per 1000 mm (0.25 in. per 50 in.) of platform length. The maximum allowable deflection shall be 50 mm (2 in.).
For Type B material lifts
(a) platform surfaces shall be skid-resistant
(b) all materials and freight carried on platforms, including wheeled vehicles, shall be blocked, locked, or otherwise positively located on the platform
Requirement 2.16.2 applies, except that for Type A material lifts, the class of loading shall not include Industrial Truck Loading: Class C1 or Class C2.
Requirement 2.16.4 does not apply. Type A material lifts shall be restricted to handling material only and shall not be used to carry persons. A sign conforming to 2.16.5 and reading "NO RIDERS PERMITTED" or equivalent verbiage shall be provided.
For Type B material lifts, 2.16.5 does not apply, except as modified by 7.5.3.4.1 through 7.5.3.4.3.
The following signs shall be provided:
(a) at each control station in the hall: "MAXIMUM LOAD _______kg (lb)" and "NO RIDERS EXCEPT ONE OPERATOR OR FREIGHT HANDLER"
(b) at the control station in the lift: "NO R1D E RS EXCEPT ONE OPERATOR OR FREIGHT HANDLER"
Signs for class of loading shall be provided in the lift and shall comply with 2.16.5.1.1.
Requirement 2.16.7 shall not apply. One-piece loads exceeding rated load shall not be carried on material lifts without automated transfer devices.
Car and counterweight safeties shall conform to Section 2.17, except as modified by 7.5.4.1 through 7.5.4.4.
Requirement 2.17.7 applies, except the rated speed shall be modified to read 1 m/s (200 ft/min).
Requirement 2.17.8 applies, except that Type A safeties shall be permitted to be used for rated speeds of 1 m/s (200 ft/min) or less. Safeties actuated by broken or slack suspension ropes are permitted only for material lifts having a rated speed of 1 m/s (200 ft/min) or less where the space below the material lift is not accessible.
Requirement 2.18.1 applies, except the rated speed shall be modified to read 1 m/s (200 ft/min).
Requirement 2.18.4 applies, except the rated speed shall be modified from 0.75 m/s (150 ft/min) to 1 m/s (200 ft/min).
Requirement 2.18.5 applies, except that when the suspension ropes are less than 9.5 mm (0.375 in.), the diameter of the governor rope shall be permitted to be less than 9.5 mm (0.375 in.), but not less than the diameter of the suspension ropes.
Suspension ropes and their connections shall conform to Section 2.20, except as modified by 7.5.6.1 through 7.5.6.6.
Requirement 2.20.1 does not apply. Cars and counterweights for material lifts shall be suspended by iron or steel wire hoisting ropes or chains. Ropes that have previously been installed and used on another installation shall not be reused. Chains, where used, shall be roller, block, or multiple-link silent type.
(a) The crosshead data plate required by 2.20.2.1 shall bear the following chain data:
(1) number of chains
(2) type of chain
(3) standard chain number
(4) the manufacturer's rated breaking strength per chain in pounds
(b) A metal data tag shall be securely attached to one of the chain fastenings. A new tag shall be installed at each chain renewal. The material and marking of the chain data tag shall conform to 2.16.3.3, except that the height of the letters and figures shall be not less than 1.5 mm (Vi6 in.). This data tag shall bear the following chain data:
(1) type of chain
(2) standard chain number
(3) the manufacturer's rated breaking strength per chain in pounds
(4) month and year the chains were installed
(5) name of the person or firm who installed the chains
(6) name of the manufacturer of the chains
Requirement 2.20.3 applies, except as modified by the following:
(a) The applicable safety factor to be applied is that of a freight elevator.
(b) Where chains are provided, the factor of safety shall be equal to 1.25 times the safety factor calculated for wire ropes.
Requirement 2.20.4 does not apply. The minimum number of hoisting ropes or chains used shall be two.
Requirement 2.20.5 applies, except where only two ropes are provided, single-bar-type equalizers shall be permitted to be used.
Requirement 2.20.9 applies. The fastening of car and counterweight ends of suspension chains shall be such as to develop at least 80% of the rated breaking strength of the strongest chain used in such fastenings.
Counterweights for Type A material lifts shall conform to Section 2.21.
Buffers and bumpers for Type A material lifts shall conform to Section 2.22, except as modified by 7.5.8.1 through 7.5.8.5.
Spring buffers or their equivalent shall be permitted to be used where the rated speed does not exceed 1.5 m/s (300 ft/min).
Oil buffers or their equivalent shall be used where the rated speed is in excess of 1.5 m/s (300 ft/min).
Table 7.9.2.14 shall be used in place of Table 2.22.3.1.
Table 7.9.2.15 shall be used in place of Table 2.22.4.1.
Solid bumpers are permitted where the rated speed does not exceed 0.25 m/s (50 ft/min).
Car and counterweight guide rails, guide-rail supports, and fastenings shall conform to Section 2.23, except as modified by 7.5.9.1 and 7.5.9.2.
The same set of guide rails shall be permitted to be used for both the car and the counterweight.
Requirements 2.23.3(a), 2.23.3(b)(1), 2.23.9.1, and 2.23.9.3 do not apply. Guide rails, supports, joints, fishplates, and fastenings that are not covered by Section 2.23 shall be permitted to be used, provided that the strengths, stresses, and deflections are consistent with Section 2.23 for the loads imposed.
Where guide-rail sections other than those specified in 2.23.3(a) are used
(b) the allowable deflection of the guide rail shall be limited to prevent the safety device from disengaging the rail during the application of the load
The driving means shall be one of the following types:
(a) traction and winding-drum machines conforming to Section 2.24, except as modified by the following:
(1) Requirement 2.24.2.2 does not apply. Sheaves and drums shall have a pitch diameter not less than 30 times the diameter of the rope.
(b) chain-drive machines conforming to the following:
(1) Friction gearing, clutch mechanisms, or couplings shall not be used for connecting the sprockets to the main drive gear.
(2) The driving machine shall be equipped with electrically released, mechanically applied brakes conforming to 2.24.8. The operation of the brake shall conform to 2.26.8.
(3) The driving-machine chains and sprockets shall be steel with all particulars of design and dimensions meeting ANSI B29.1.
(c) indirect-drive machines conforming to 2.24.9.
(d) rack-and-pinion drive machines conforming to 4.1.13. The safeties on rack-and-pinion drive machines shall conform to either 4.1.9 or 7.5.4.
(e) screw-column drive machines conforming to 4.2.15.
For Type B material lifts, the following shall apply:
(a) No part of the driving machine shall be located directly above the platform area except when a car top is provided (see 7.5.1.1.6).
(b) Provision shall be made to allow manual lowering in the event of power failure.
For Type A material lifts, the terminal stopping devices shall conform to Section 2.25, except as modified by 7.5.11.1.1 through 7.5.11.1.3.
Requirement 2.25.3.3 does not apply. Final terminal stopping devices shall be provided in the hoistway and shall be directly operated by the movement of the car.
Requirement 2.25.3.5 does not apply. Where final terminal stopping switches are located on and operated by the driving machine, they shall conform to 2.25.3.5.
Requirement 2.25.4 does not apply.
For Type B material lifts, the terminal stopping devices shall conform to 7.5.11.2.1 through 7.5.11.2.4.
A normal terminal stopping device (electrical switch) shall be provided at the top and bottom landings; it shall positively and automatically stop the lift at the landings.
Mechanical limits shall be provided at the top and bottom ends of travel. The top and bottom limits shall be permitted to exceed the normal terminal stopping device by 100 mm (4 in.).
Where a mechanical limit at the top of travel cannot be provided (because of the design of the hoisting machine), a final terminal stopping device (electrical switch) shall be provided that shall, after an overtravel of 50 mm (2 in.), cause the power to be removed from the hoisting machine automatically and independently of the functioning of the device required in 7.5.11.2.1.
Normal and final terminal stopping devices shall be operated directly by the movement of the lift, and shall not be accessible from the landings.
Type A material lift operating devices and control equipment shall conform to Section 2.26, except as modified by 7.5.12.1.1 through 7.5.12.1.25.
Requirement 2.26.1.2 does not apply.
Requirement 2.26.1.3 does not apply. One-piece loads greater than the rated load are not permitted.
Requirement 2.26.1.4.1(a)(l)(-a) does not apply for car sizes where the area of the platform is less than 1.4 m2 (15 ft2).
Requirement 2.26.1.5 does not apply.
Requirement 2.26.1.6 applies, except that the devices shall be located at the landing.
Requirement 2.26.2.5 does not apply. An emergency stop switch (switches) conforming to 2.26.2.5(a) through 2.26.2.5(c) shall be provided to stop operation of the material lift, and of the door and gate (if power operated). The emergency stop switch shall be located in the car adjacent to each entrance in a position that shall be accessible to a person standing at the floor adjacent to the car entrance.
Requirement 2.26.2.6 does not apply.
Requirement 2.26.2.10 applies only where a speed governor is provided.
Requirement 2.26.2.11 does not apply. Final terminal stopping devices conforming to 7.5.11 shall be provided for every electric material lift.
Requirement 2.26.2.13 does not apply.
Requirement 2.26.2.15 does not apply. Car door or gate electric contacts conforming to 7.5.1.2.2 shall be provided.
Requirement 2.26.2.16 does not apply.
Requirement 2.26.2.20 applies, except when a closed door or gate or closed hoistway door prevents the device from encroaching into the hoistway.
Requirement 2.26.2.21 does not apply. A stop switch conforming to 7.5.12.1.6 shall be provided in the car.
Requirement 2.26.3 does not apply.
Requirement 2.26.4.3 does not apply. The following switches shall have contacts that are positively opened mechanically; their opening shall not be solely dependent on springs:
(a) stop switch in pit (see 2.26.2.7)
(b) stop switch on top of the car (see 2.26.2.8)
(c) car safety mechanism switch (see 2.26.2.12)
(d) speed governor overspeed switch (see 2.26.2.10)
(e) final terminal stopping device (see 7.5.11)
(g) hoistway door close contacts (see 7.5.12.2.18)
Requirement 2.26.4.4 does not apply.
Requirement 2.26.4.5 does not apply.
Requirement 2.26.5 does not apply.
Requirement 2.26.6 applies for polyphase motors. When single-phase AC motors are provided, they shall come to a complete stop before electrically reversing direction.
Requirements 2.26.9.3.1(c) through 2.26.9.3.1(e) do not apply.
Requirements 2.26.9.3.2 and 2.26.9.4 do not apply. When a single ground or failure as specified in 2.26.9.3.1(a) or 2.26.9.3.1(b) occurs, the car shall not be permitted to restart.
Requirement 2.26.12 does not apply.
Operating devices that initiate motion of the car shall not be located in the car.
Requirement 7.2.12.40 applies.
Type B material lift operating devices and control equipment shall conform to Section 2.26, except as modified by 7.5.12.2.1 through 7.5.12.2.34.
Requirement 2.26.1.2 does not apply.
Requirement 2.26.1.3 does not apply. One-piece loads greater than the rated load are not permitted.
Requirement 2.26.1.4 does not apply. Where top-of-car inspection operation is provided, 2.26.1.4.2 applies.
Requirement 2.26.1.5 does not apply.
Requirement 2.26.1.6 does not apply. Operation of a material lift in a leveling or truck zone at any landing by a car leveling or truck-zoning device, when the hoistway doors, the car doors or gates, or any combination are not in the closed position, is permissible, subject to the requirements of 7.5.12.2.5.1 through 7.5.12.2.5.4.
Operating devices of manually operated car-leveling devices or truck-zoning devices shall be the continuous-pressure type and shall be located in the car.
The material lift leveling zone at any landing shall not extend more than 75 mm (3 in.) above and below any landing. Operation in the leveling zone above any landing shall only be permitted when a car apron conforming to 2.15.9 is provided, except the minimum allowances of 1220 mm (48 in.) in 2.15.9.2(a) and 525 mm (21 in.) in 2.15.9.2(b) do not apply.
The material lift truck zone at any landing shall not extend more than 1700 mm (67 in.) above the landing. Truck zones shall only be permitted when a car apron conforming to 2.15.9 is provided, except the minimum allowances of 1220 mm (48 in.) in 2.15.9.2(a) and 525 mm (21 in.) in 2.15.9.2(b) do not apply.
Requirement 2.26.1.6.5 shall apply.
Requirement 2.26.2.5 does not apply. Each control station shall be provided with an emergency stop switch (switches) conforming to 2.26.2.5(a) through 2.26.2.5(c) that, when operated, shall cause the power to be removed from the driving machine. Requirement 2.26.2.5(a) does not apply to the emergency stop switch located at each landing. When a constant-pressure-type emergency stop switch at a landing is released, the car shall not move, except for anticreep operation, until all operating devices in the car and at the landings have been returned to their nonactuated state. The car shall continue to remain stationary, except for leveling, until an operating device in the car or at the landing is actuated.
Requirement 2.26.2.6 does not apply.
Requirement 2.26.2.8 applies only where a car top is provided.
Requirement 2.26.2.10 applies only where a speed governor is provided.
Requirement 2.26.2.11 does not apply. Final terminal stopping devices conforming to 7.5.11 shall be provided for every electric material lift.
Requirement 2.26.2.12 does not apply.
Requirement 2.26.2.13 does not apply.
Requirement 2.26.2.15 does not apply. Car door or gate electric contacts conforming to 7.5.1.2.2 shall be provided.
Requirement 2.26.2.16 does not apply.
Requirement 2.26.2.20 applies, except when a closed door or gate or closed hoistway door prevents the device from encroaching into the hoistway.
Requirement 2.26.2.21 does not apply. A stop switch conforming to 7.5.12.2.6 shall be provided in the car.
Requirement 2.26.2.24 does not apply.
Hoistway door close contacts, conforming to 7.4.14.2, shall be provided for all Type B material lifts that can operate with hoistway doors or gates closed but not locked within 75 mm (3 in.) above or below a landing and are provided with interlocks. These contacts are electrical protective devices.
Requirement 2.26.3 does not apply.
Requirement 2.26.4.3 does not apply. The following switches shall have contacts that are positively opened mechanically; their opening shall not be solely dependent on springs:
(a) stop switch in pit (see 2.26.2.7)
(b) stop switch on top of the car (see 2.26.2.8)
(c) car safety mechanism switch (see 2.26.2.12)
(d) speed governor overspeed switch (see 2.26.2.10)
(e) final terminal stopping device (see 7.5.11)
Requirement 2.26.4.4 does not apply.
Requirement 2.26.4.5 does not apply.
Requirement 2.26.5 does not apply.
Requirement 2.26.6 applies for polyphase motors. When single-phase AC motors are provided, they shall come to a complete stop before electrically reversing direction.
Requirements 2.26.9.3.1(c) through 2.26.9.3.1(e) do not apply.
Requirements 2.26.9.3.2 and 2.26.9.4 do not apply. When a single ground or failure as specified in 2.26.9.3.1(a) or 2.26.9.3.1(b) occurs, the car shall not be permitted to restart.
Requirement 2.26.11 does not apply.
Requirement 2.26.12 does not apply.
All operating devices shall be the continuous-pressure type (CPPB in Table 7.4.3).
A control station located at a landing shall be in the vicinity of, and in full view of, the material lift entrance.
Controls and equipment shall be protected against unauthorized use.
The center of the car control station shall be located at a vertical height between 1500 mm (59 in.) and 1700 mm (66 in.) from the platform surface and horizontally at least 1000 mm (39 in.) from the car sill. In the case of front and rear entrances with a car depth less than 2000 mm (79 in.), the car control station shall be located horizontally at the center of the side enclosure.
No landing control devices, except emergency stop switch(es), shall override a car control device that is in operation. Means shall be provided within the car that shall render inoperative landing control devices.
Requirement 7.2.12.40 applies.
Layouts shall conform to Section 2.28.
Section 8.8 applies, except for tack welding and other non-load-carrying welds.
Section 7.6 applies to hydraulic material lifts without automatic transfer devices.
Hoistways, hoistway enclosures, and related construction shall conform to Sections 3.1 through 3.13 and 3.29, except as modified by 7.4.3 through 7.4.16.
Mechanical equipment shall conform to Section 7.5.
Roped-hydraulic elevators shall be suspended with not less than two wire ropes or chains in conformance with 2.15.13 and 7.5.6.
Sheaves used to transfer load from the driving machine to the car frame through wire ropes or chain shall conform to 7.5.10.
Valves, pressure piping, and fittings shall conform to Section 3.19, except as modified by 7.6.4.1 and 7.6.4.2.
Where cylinders are equipped with an overspeed valve in conformance with 3.19.4.7, the requirement of 3.19.3.3.1(a) does not apply.
For Type B material lifts, 3.19.4.4 does not apply.
Counterweight ropes, rope connections, and sheaves shall conform to Section 3.20, except as modified by 7.6.5.1 and 7.6.5.2.
Section 3.20 does not apply. Ropes and rope connections shall conform to 7.5.6.
Hydraulic machines and tanks shall conform to Section 3.24.
For Type B material lifts, the machines and tanks shall be enclosed and access shall be through a panel or door, which shall normally be locked.
Terminal stopping devices for Type A material lifts shall conform to Section 3.25.
Terminal stopping devices for Type B material lifts shall conform to 7.5.11.2.
Operating Devices and Control Equipment. Operating devices and control equipment shall conform to Section 2.26 as specified by 7.5.12, except as modified by the following:
(a) Requirements 7.5.12.1.6 through 7.5.12.1.14 and 7.5.12.2.5 through 7.5.12.2.16 for electrical protective devices apply as specified in 7.6.8.3.
(c) Requirement 2.26.8 does not apply.
(e) Requirement 2.26.10 does not apply.
(f) Requirement 2.26.2.11 does not apply.
The words "driving-machine motor and brake" in Section 2.26 and in 7.5.12 shall be replaced with "hydraulic machine."
Anticreep Operation. Each hydraulic Type A material lift shall be provided with anticreep operation in conformance with 3.26.3. Each hydraulic Type B material lift shall be provided with an anticreep operation to correct automatically a change in car level below any landing. It shall conform to 7.6.8.2.1 through 7.6.8.2.5.
The anticreep leveling zone shall not extend more than 75 mm (3 in.) below any landing.
The anticreep device shall maintain the car within 25 mm (1 in.) of the landing.
The anticreep device shall be required to operate the car only in the up direction.
When operation dependent on the availability of electric power is provided, 3.26.3.1.4 shall apply.
Only the following, when activated, shall prevent operation of the anticreep device:
(a) all electrical protective devices except those listed in 7.6.8.3
(b) recycling operation (3.26.7)
(c) inspection transfer switch [2.26.1.4.1(b)]
(d) low oil protection means (7.6.8.5)
(e) oil tank temperature shutdown devices
When in the open position, all electrical protective devices shall prevent operation by all operating means, except the following devices shall not prevent operation of the anticreep device:
(d) hinged car platform sill electric contacts (2.26.2.20)
(e) hoistway door close contacts (7.5.12.2.18)
Requirements 3.26.5 through 3.26.8 apply to all hydraulic material lifts. Requirements 3.26.9 and 3.26.10 shall apply to Type A hydraulic material lifts only.
A means shall be provided to render normal control of a Type B hydraulic material lift inoperative if for any reason the liquid level in the tank falls below the permissible minimum. Suitable means include, but are not limited to, the following:
(a) direct sensing of the liquid level
(b) a pump-run timer
Actuation of the means shall prevent the hydraulic pump from running, preventing further upward motion. Continuous-pressure operation shall continue to function in the downward direction. The means shall require local manual reset before returning the car to service.
A flashing light and an audible signal shall be actuated on the start of the door opening prior to transfer. Where used in nonrestricted areas, the automatic transfer device shall be designed so that the kinetic energy of the load during discharge shall not exceed 40 J (30 ft-lbf) and the speed shall not exceed 0.5 m/s (1.5 ft/s). The automatic transfer device shall stop the load at the completion of a discharge operation.
Where the transfer of load is in a nonrestricted area, there shall be a clearance of not less than 1220 mm (48 in.) between the end of the transferred load and any fixed obstruction in line with the end of the load. Where the automatic transfer device is designed to carry out multiple cart transfers, the 1220 mm (48 in.) clearance space shall be measured from the leading edge of the first cart to be ejected, once the multiple transfer operation has been completed.
In nonrestricted areas, discharge shall not take place unless the area is clear or a protective device or suitable guarding is provided. Guarding shall be by one of the following methods:
(a) railings or suitable barriers to prevent persons from entering the path of the transferring load.
(b) mechanical or electrical devices designed to prevent or stop transfer if a person or object is in the path of the transferring load.
(c) providing a table or a raised section not less than 460 mm (18 in.) above the floor and of such dimensions that the load does not overhang the table or raised section. The distance between the car platform sill and the nearest edge of the table shall not exceed 150 mm (6 in.).
Where the automatic transfer device transfers the load directly on the landing floor, the maximum variation in overall floor level within the emerging single or multiple loads tracking area shall not exceed 6 mm (0.25 in.).
Power dumbwaiters with automatic transfer devices shall conform to Sections 7.1 through 7.3, except as modified in 7.8.1.1 through 7.8.1.4.
Requirement 7.1.12.1.3 does not apply. All hoistway doors shall be equipped with interlocks conforming to 7.1.12.1.2.
Where the placement of the load is controlled and secured in transit, 7.2.1 does not apply. Where a car enclosure is provided, 7.2.1 applies.
The effective inside height of the car above or below the transfer device shall not exceed 1220 mm (48 in.).
The transfer device on the floor of the dumbwaiter shall be permitted to serve as a platform. Open areas in the floor shall be covered with solid flooring, grille, or perforated metal, and openings in such material shall reject a ball 50 mm (2 in.) in diameter.
Where the gross load (i.e., car, transfer device, rated load, gates, operating devices, etc.) exceeds 700 kg (1,500 lb), or the rated speed is greater than or equal to 1 m/s (200 ft/min), car safeties conforming to Section 2.17 shall be provided and shall comply with 7.9.2.8 through 7.9.2.10.
An emergency stop switch (switches) conforming to 2.26.2.5(a) through 2.26.2.5(c) shall be provided to stop operation of the dumbwaiter, the door, and the transfer device. A stop switch shall be located in the car adjacent to each entrance in a position that is accessible to a person standing at the floor adjacent to the car entrance.
Dumbwaiters with automatic transfer devices that have a net inside platform area of 0.35 m2 (3.75 ft2) or more shall be rated for a lifting load of not less than 135 kg (300 lb).
Section 7.9 applies to electric material lifts with automatic transfer devices.
Hoistways, hoistway enclosures, and related construction shall conform to Sections 2.1 through 2.13 and 2.29, except as modified by 7.9.1.1 through 7.9.1.10.
Cutouts are permitted in doors for the accommodation of the automatic transfer device. Cutouts shall be the minimum area to accommodate the transfer mechanism, and if not substantially filled with a fire-resistive automatic transfer device when the hoistway doors are in the fully closed position, the cutout area shall be covered by a shield that will automatically seal the cutout area and maintain the fire-protection rating of the hoistway entrance assembly.
Only the following types of entrances shall be used with material lifts with automatic transfer devices:
(a) power-operated horizontal slide, single- or multisection
(b) power-operated vertical slide, biparting counterbalanced
(c) power-operated vertical slide, counterweighted, single- or multisection
The automatic transfer mechanism or stationary track shall not project into a hoistway beyond the line of the landing sill unless solid-type guide shoes are provided on the car.
In restricted areas only and when access to the hoistway doors is blocked by a permanently floor-mounted automatic transfer device, the hoistway doors shall close and lock before the car has traveled not more than 455 mm (18 in.) away from the landing.
Hoistway door unlocking devices are required at only the top and bottom terminal landings.
(a) In nonrestricted areas, all the requirements of 2.13.3.4 shall apply, except for 2.13.3.4.2 and 2.13.3.4.4.
(b) In restricted areas, 2.13.3.4 does not apply where the hoistway entrance is blocked by a permanently floor-mounted automatic transfer device. In restricted areas, where the hoistway entrance is accessible to personnel, 2.13.3.4 shall apply, except 2.13.3.4.2 and 2.13.3.4.4, which do not apply.
Requirement 2.13.4.2.4 does not apply.
Top emergency exits are not required.
Grille or perforated construction shall be permitted to be used for the full height and top-of-car enclosure. The car enclosure shall be the same height as the hoistway entrance. The 1825 mm (72 in.) minimum height limitation shall not apply.
When car doors or gates are provided and where the car entrance height exceeds 1825 mm (72 in.), the doors or gates shall extend from the car floor to a height not less than 1825 mm (72 in.). Where the car entrance height is 1825 mm (72 in.) or less, the car doors or gates shall extend to the full height of the car entrance.
Transfer devices located in the car shall not be deliberately obscured. Transfer devices in the car that are obscured shall be marked. The marking shall consist of alternating 100 mm (4 in.) diagonal yellow and black stripes.
The transfer device on the floor of the material lift shall be permitted to serve as a platform. Open areas in the platform shall be covered with solid flooring, grille, or perforated metal. Also, any openings in such material shall reject a ball 50 mm (2 in.) in diameter.
The rated load of the material lifts shall be based on the weight of the maximum load to be handled or on 240 kg/m2 (50 lb/ft2) of inside net platform area, whichever is greater.
Material lifts with transfer devices shall carry materials only and shall not carry persons. Signs conforming to 2.16.5 and reading "NO PERSONS PERMITTED" or an equivalent warning shall be provided within the car enclosure and on the landing side of each entrance door.
Counterweight safeties, where required for material lifts with automatic transfer devices, shall conform to the requirements for car safeties, except as modified by 7.9.2.9 through 7.9.2.11.
The rated speed shall be modified to read 1 m/s (200 ft/min).
Type A safeties are permitted for material lifts having a rated speed of 1 m/s (200 ft/min) or less. Safeties actuated by broken or slack suspension ropes are permitted for material lifts having a rated speed of 0.50 m/s (100 ft/min) or less.
The rated speed shall be modified to read 1 m/s (200 ft/min).
Section 2.19 does not apply.
Spring buffers or their equivalent shall be permitted to be used where the rated speed does not exceed 1.5 m/s (300 ft/min).
Table 7.9.2.14 shall be used in place of Table 2.22.3.1.
| Rated Speed, m/s (ft/min) | Stroke, mm (in.) |
|---|---|
| 1.00 or less (200 or less) | 40 (1.5) |
| 1.01-1.25 (201-250) | 65 (2.5) |
| 1.26-1.50 (251-300) | 100 (4.0) |
Table 7.9.2.15 shall be used in place of Table 2.22.4.1.
| Rated Speed, m/s (ft/min) | Stroke, mm (in.) |
|---|---|
| 1.50 (300) | 70 (2.75) |
| 1.60 (325) | 90 (3.50) |
| 1.75 (350) | 110 (4.25) |
| 2.00 (400) | 160 (6.25) |
| 2.25 (450) | 210 (8.25) |
| 2.50 (500) | 280 (11.00) |
| 2.75 (550) | 350 (13.75) |
| 3.00 (600) | 430 (17.00) |
| 3.50 (700) | 630 (24.75) |
| 4.00 (800) | 845 (33.25) |
| 4.50 (900) | 1110 (43.75) |
| 5.00 (1,000) | 1410 (55.50) |
Car-mounted operating devices shall not be permitted unless required for maintenance. Where furnished for such purposes, operating devices shall consist of key-operated switches or be mounted behind a key-locked cabinet. The key shall be Group 1 Security (see Section 8.1).
Requirement 2.26.1.4 does not apply, except where the gross weight (i.e., car, transfer device, rated load, operating devices, etc.) exceeds 680 kg (1,500 lb), a top-of-car operating device conforming to 2.26.1.4.2 shall be provided.
An emergency stop switch (switches) conforming to 2.26.2.5 shall be provided to stop operation of the material lifts, the door, and the automatic transfer device. The emergency stop switch shall be located in the car adjacent to each entrance in a position that shall be accessible to a person standing at the floor adjacent to the car entrance. If a permanently mounted automatic transfer device, located at the landing, blocks the entrance to the car, an emergency stop switch shall be located at that landing in a position accessible to a person standing near that landing in addition to the emergency stop switch in the car.
Section 2.27 does not apply.
Section 8.8 applies, except for tack welds and other non-load-carrying welds.
Hydraulic material lifts shall conform to Sections 3.1, 3.18 through 3.20, 3.23 through 3.26, and 3.28, except as modified by 7.9.1 and 7.9.2.