Attachment 3 - General Elevator Requirements.pdf

Attachment #3 - General Elevator Requirements

1. STANDARD REFERENCES

a. Unless as modified herein or otherwise distinctly specified, all elevator material, design, clearances, definitions, construction, workmanship and tests shall conform to the requirements of the latest edition of the American National Standard Safety Code for Elevators, and, Escalators, (ANSI A17.1), including errata, interpretations and revisions and hereinafter referred to as the A17.1 Code.

b. Wherever Federal Specifications, Codes, Standard Details and other standards are referenced, latest editions and amendments shall apply.

c. References to the National Electric Code are to the latest edition. All electrical work specified in the A17.1 Code shall be done in accordance with latest edition of NEC.

d. References to UL standards are to standards of Underwriters Laboratories, Inc.

e. References to NEMA are to Standards of the National Electrical Manufacturers

Association.

f. All work shall comply with the applicable State and local Code requirements or regulations.

g. References to Handicap Provisions are to "Uniform Federal Accessibility Standard"

(UFAS) and the "Americans with Disabilities Act Accessibility Guidelines" (ADAAG). In case of conflicts in the requirements, the most stringent requirements shall be required.

h. General Elevator Requirements are guidelines for the contractor to follow unless otherwise directed by the GSA.

2. POWER SUPPLY

a. Before any electrical equipment is manufactured or purchased, the characteristics available for elevator power and lighting shall be verified by the contractor. The equipment shall be furnished for the power as verified by the contractor.

b. Failure to verify the power supply shall not relieve responsibility for the satisfactory operation of the equipment.

c. Controls shall have provisions for sequential return of all elevators and operation of one (1) elevator on Emergency Power unless otherwise directed by the GSA.

3. CAPACITY, SPEED, TRAVEL, PLATFORM SIZE:

a. The elevators shall have a capacity to lift the rated load at the rated speed in feet per minute. The rated load shall be exclusive of the weight of the complete car and cables. The travel, terminal floors, number of stops and openings and the over-all car platform size shall be verified with requirements indicated on the drawings.

4. ELECTRIC FEEDERS AND WIRING:

a. Replace electric disconnect switches, include shunt trip devices to be installed with disconnect means. Arc Flash warning labels shall be affixed to the new disconnects.

b. Provide new fused disconnects for the existing 110 Volt A.C. power supply for car light circuits for all elevators. New disconnects shall be labeled, and located in the machine room, and lockable in the off position

c. All conduit connecting the various items of elevator equipment in the elevator machine room shall be plumb and level. Metal wireways and auxiliary gutters shall be run exposed in readily accessible locations. All raceways embedded in concrete shall be rigid or intermediate steel conduit. At all other locations any of the other types of raceways specified may be used subject to conditions, specified. Raceway fittings shall provide conductor passageways free from burrs, shoulders or other projections which will reduce internal passage area or cause abrasion of conductors being pulled through.

d. All conductors to the car shall consist of flexible traveling elevator cables, conforming to the requirements of the NEC. Cables shall be run from the car junction box to a machine room junction box and from these boxes, conductors shall be run to various required locations. Each traveling cable conductor shall have a distinctive color code for identification of the individual conductors. Each traveling cable shall have at least 20 percent spare conductors. Junction boxes shall contain approved terminal blocks for connection of conductors. Terminal blocks shall have indelible identification numbers for each terminal connection. All connections to terminal blocks shall be made with pressure wire connectors.

e. Traveling cables shall be so suspended, anchored and run that the strain on individual cable conductors will be reduced to a minimum and connections to terminal blocks will be free from all strain. The outer cable covering must remain intact between junction boxes and abrupt bending of cable producing distortion of cable will not be permitted. If, due to sway or change in relative position of traveling cables, complete freedom from contact with the hoistway construction cannot be avoided, suitable shields or pads shall be provided wherever necessary to prevent chafing or damage to the cables.

f. Traveling cables shall include minimum six (6) spare shielded pairs, and at least one coaxial cable for addition of video camera unless otherwise directed by the GSA.

g. Furnish and install all wires and cables necessary for the proper connection and operation of all equipment installed under the elevator contract. All conductors shall be in accordance with NEC requirements. The conductor size shall be such that the maximum current carried will not exceed limits prescribed by the NEC.

h. Unless otherwise specified, conductors exclusive of traveling cables, shall be annealed copper with 60o Centigrade or better insulation and shall be in accordance with Federal Specification J C 30A. Single and multiple conductor cables shall have color coding or other suitable identification for each conductor. Unless otherwise specified, no joints or splices shall be permitted in wiring except at outlets. Tap connectors may be used in wireways provided they meet all NEC requirements.

Installation of conductors in raceways shall conform to the NEC.

i. All conductors used for external wiring between the various items of elevator equipment shall be connected to terminal blocks which meet UL Standard 1059 (1975). Crimp type connectors shall be applied with an appropriate setting tool to ends of all size No. 10 or smaller external wires.

5. ACCESSORIES

a. Three sets each of complete, legible laminated field wiring diagrams, including single line diagrams showing all electrical circuits shall be furnished. All symbols shall be listed corresponding to the identity or markings on machine room and hoistway apparatus of the systems specified. One set of diagrams shall be coated with laminated plastic, or other approved covering, suitably bound and placed in the machine room where directed. Each of the two remaining sets shall be neatly bound and delivered to the Contracting Officers Representative. The diagrams shall be revised to include all field modifications.

b. A complete set of tools necessary for making all system adjustments shall be furnished for each elevator machine room and delivered to the Contracting Officer Representative. (A metal tool cabinet having two shelves and a hinged door shall be provided in each elevator machine room. Cabinet size shall be not less than 48 inches high, 18 inches wide and 14 inches deep.)

c. Include an adjuster's level service tool or terminal with complete written installation manuals, service manuals, adjustment information and instructions for performing systems adjustments, special and emergency functions, diagnostic trouble shooting, and systems testing as required by ANSI A17.1 code. The service tool shall become the property of GSA, and if the device requires reprogramming it shall be performed at no additional cost to the government for the life of the equipment.

d. Cylinder locks shall have a bronze cylinder with not less than five pin tumblers or shall have not less than a five disc combination provided wafer keyways, tumblers, and springs are of stainless steel. Provide three nickel silver keys for each lock and deliver same to the Contracting Officer Representative. Provide an identification tag on each key with stamped legend "PROPERTY OF U.S. GOVERNMENT" on reverse side. Tags shall conform to Federal Specification FF T 77B, Type A, Class 1, engraved. Locks shall be independently keyed unless otherwise specified. Key operated switches shall be of the cylinder lock key operated type.

e. A new hoistway access switch shall be provided at the top and bottom terminal landings for all elevators. Hoistway access switches shall be of the key operated type meeting all requirements of the A17.1 Code. The movement of a car by means of the hoistway access switch at the top terminal landing shall be limited to a distance of approximately 12 feet down travel and a return to the top landing. Access switches shall be mounted flush and inconspicuously in the door jamb.

f. Faceplates, if furnished, shall be of metal of same composition and finish as the faceplates of landing call buttons for the corresponding landing. The exposed portion of each access switch or its faceplate shall have indelible legends to indicate its "Identity" and the "Up," "Down" or "Off" positions.

g. All elevators shall be provided with an operating device mounted on the car crosshead which will permit slow speed operation of the car. Separate additional means for operation of power door operators and automatic car leveling devices are not required. The operating device shall be mounted in a metal box and shall be rigidly secured in a position conveniently accessible on top of the car. Operating devices shall be shrouded or otherwise protected in an approved manner to prevent accidental movement. Provide indication of Fire Service Operation within or adjacent to the car top operating device.

h. Where access to elevator pit is through the bottom terminal landing, the pit stop switches shall be located 4 feet above pit floor and 36" above bottom landing floor and adjacent to the pit ladder.

i. Provide Hoistway Door Unlocking Devices at each entrance for all elevators, conforming to the requirements of the A17.1 Code.

6. PAINTING AND FINISHING

a. Unless otherwise specified, the machine, motor, motor drive, controller, selector, sheaves, car frame, counterweight frame, machine and sheave beams, guide rails and buffers except their machined surfaces, door operator, cams, and other ferrous metal items furnished for each elevator shall be painted with not less than one shop priming coat and one field coat of semi gloss enamel in the manufacturer's standard color.

b. Holes or other imperfections in the surfaces of a machine, motor, casting, motor generator and the like shall be filled and smoothed off before the factory priming coat is applied.

c. The painting and finishing of governor, car, hoistway entrances and doors shall be as specified under their respective headings.

d. The machine room floor, pit floor and car top shall have all unused holes or defects filled and shall be painted with semi-gloss light colored gray.

e. Hoistway walls shall be cleaned down and painted as needed to provide a consistent finish with what is currently there. In addition any penetrations in hoistway walls shall be smoothed and filled to provide a 2hr fire rating.

7. IDENTIFICATION MARKINGS

a. Elevator hoistways shall have floor designations on the walls and/or doors of hoistways in accordance with the A17.1 Code.

b. Floor designations shall be provided at each hoistway entrance on both sides of the jamb visible from within the car and the elevator lobby at a height of 60 inches above the floor. Designations shall be on a contrasting color background, a minimum of 2- 1/2 inches high and raised at least 0.030 inch. Identification markings for machines, motor generators, controllers, etc. shall be provided at locations where directed. The numbers of hoisting machines and motor generators sets shall be 4 inches high and the numbers for controllers, selectors and other auxiliary equipment shall be 2 inches high.

c. The identification numerals or letters for floor landings, machines, etc., shall be either stencil painted or decal type of a color which will contrast with color of the surface to which the marking is applied. Decal type markings shall have a coat of clear varnish or equivalent after application.

8. MACHINE BEAMS AND OTHER SUPPORT STEEL

a. All necessary structural steel beams or other steel members required for support of elevator machine, sheaves, rope hitches, governor, buffers, grating, and other elevator equipment, shall be provided. Bearing plates and anchors shall be provided to mount adapter beams and other support steel securely in place. Existing beams and slabs may be reused provided the calculations reveal they are adequate for the equipment to be used and support the loads in accordance with the A17.1 Code. Otherwise, provide support as required.

b. Provide metal sleeves projecting 2 inches above the concrete slab for all hoisting rope and governor rope, selector rope or tape, and other similar openings. Sleeves shall be not less than No. 12 U.S.S. Gage and shall have inside sleeves sloped same as the ropes and tapes.

c. Fill and finish all unused holes in machine room, secondary floors and walls, and hoistway.

9. GEARLESS MACHINE

a. New machines shall be designed for the current speed and capacity of current machines installed.

b. Provide A17.1 required means to prevent ascending car and unintentional movement of car safety device. No pneumatic devices accepted per the GSA authority having jurisdiction.

10. MACHINE & MOTOR

a. Provide a high efficiency Permanent Magnet AC-motor, brake assembly, support frame, and grooved drive sheave. The motor and brake assembly shall be attached to the support frame and have a common rotating shaft of the gearless design. The motor shall also be suited in all respects to the AC used. The motor shall be ruggedly designed and all parts shall be capable of meeting the severe requirements of elevator service. The motor shall have sufficient capacity to meet the test requirements.

b. The speed of the motor when operated with controller in full speed position shall not vary more than 5 percent of the normal rated speed under all loads within the capacity range.

c. The insulation resistance between conductors and frame of motor shall be not less than one meg ohm. The dielectric shall successfully pass a dielectric test of 60 Hertz alternating current applied for one minute.

d. The motor bearings shall be either the ball or roller type arranged for grease lubrication and fitted with grease gun connections and drain plugs. The bearings and lubricant reservoirs shall be dust tight and shall incorporate effective lubricant seals or other means to prevent lubricant leakage. The fittings for lubrication may be omitted where pre-lubricated sealed for life type bearings are used.

11. CONTROLLER

a. The elevator controller shall provide operation as specified hereinafter. Controllers shall be of the floor mounted, free standing type with NEMA 1 enclosures, with locking cabinet doors. Bolt the bottoms of the control panels to the floor.

b. The sockets or circuits boards used for the mounting of relays and electrical or electronic components shall be made of an approved moisture resisting dielectric material having dielectric and structural properties suitable for its intended usage.

The material shall conform to requirements of NEMA LI 1 1971 (R 1976) for the type and grade suited for the application. The sockets and circuit boards shall be secured to panel frame with bolts, screws or other approved demountable means.

c. The controller panel frame shall be of rigid steel construction to provide means for mounting circuit boards or devices. Panel frames supporting controller switching devices which produce a perceptible panel frame vibration, shall be provided with an approved vibration absorbing mounting.

d. All wiring on the panels shall be neatly formed and securely fastened in place. All equipment on the panels shall be readily accessible and easily replaceable. All controller relays shall be magnetically operated. Solid state components shall be electrically sized, physically spaced, and ventilated so their heat can be adequately dissipated during operation. All controller components shall be designed and rated to provide at least 20 years of operation as specified, with recommended maintenance, before replacement is required.

e. All mechanical switches and relays shall be opened either compression of leaf type contact springing or gravity when power is interrupted except those switches or relays which are magnetically or mechanically latched closed. All A.C. relay magnets shall be designed so residual magnetism will not interfere with proper operation. All similar switch and relay units on controllers shall be of the same manufacture.

f. Wiring for the various external control and operating circuits shall be brought to a terminal board and then shall continue to the various components on the controller panel. Terminal board may be an integral part of panel or a separate panel mounted adjacent to same panel or terminal blocks mounted on the panel. Each terminal is to have indelible means of identification to facilitate testing of the various controller circuits. All connection of wires to terminal boards from external circuits shall be made with solderless pressure type wire connectors. When a number of external connections are made to the same terminal, stud washers shall be provided between lugs to insure uniform seating and contact.

g. Each device on the controller panels shall be properly identified by name, letter or standard symbol which shall be neatly stencil painted, (or otherwise marked) in an approved indelible and legible manner, on the device or panel. The identification markings shall be coordinated with identical markings used on the wiring diagrams.

12. SOLID STATE MOTOR DRIVE (3VF DRIVE):

a. Provide Variable Voltage Variable Frequency high efficiency AC Regenerative type operation for all elevators.

b. System shall be adequate size to handle to new hoist machine. Suitable isolation transformer shall be provided. The system shall, during acceleration and deceleration periods, gradually change the voltage and frequency applied to the elevator motor without interruption of power to the motor to provide smooth acceleration, deceleration and running speeds, and accurate floor stops. All safety circuits shall conform to ASME 17.1 Code. Line filters, noise spike or notching suppressors and isolation transformers shall be provided to ensure electrical feedback to power source of power generated by overhauling loads shall not affect other computer operated equipment in the building. Resilient isolators shall be provided to support all drives and transformers. Audible noise shall not exceed 70 decibels under any operating condition.

c. The motor drive shall be equipped with devices which shall limit the current applied to the hoisting motor to that required for actual specified duty, and shall prevent damage to hoist motor from overload, overvoltage, or excessive current.

d. In case of brake application under normal operation, the hoisting motor shall be slowed down electrically, through a dynamic braking effect, so it will be practically stopped at the instant of brake application.

e. Motor drive components shall be installed in a NEMA 1 enclosure located in the machine room. All components shall be conservatively rated to provide a life of not less than 80,000 hours. All electric connections between the electric feeder, the motor drive, and the elevator hoist motor shall be made with suitable connectors or to suitable terminal blocks.

13. CAR LIGHTING AND FAN CONTROL:

a. The control system shall be equipped with an adjustable timing device which when an elevator that has remained idle at its assigned parking floor for a predetermined time after the last registered call has been answered, shall automatically extinguish the regular interior car lighting and stop the car fan or blower, if running, of the corresponding car but the power circuits to convenience lights and receptacles on top and bottom of car shall not be interrupted. Any hall or car call registration shall cause the car lighting and fan to resume their normal functions.

b. The circuits shall be so arranged that power to the car lighting and car fan or blower shall not be interrupted by an overload, blown fuse, disconnect switch, or other abnormal conditions to the elevator controls.

14. GROUP AUTOMATIC OPERATION:

a. The operating devices for group automatic operation shall include dispatch buttons in each car, landing call buttons and a group supervisory control system, all electrically connected to the control equipment governing selection of landing stops be made, direction of travel, starting, acceleration, retardation and stopping of the elevator cars and the systematic dispatching operations of the elevators.

b. A new main car operating panel shall be provided. The panels shall be of the swing return type and contain the following devices:

i. A series of car dispatch buttons having designations corresponding to the landing served and an integral registration light for each button. The actuation of a dispatch button in either panel shall cause the corresponding registration light in both panels to be illuminated until the call is canceled.

ii. Key operated emergency stop switch.

iii. Emergency signal button connected to a 6 inch diameter bell located on car top.

iv. Door open and close buttons.

v. Key operated emergency service switch, pilot light and all necessary instructions, signage, etc. in main panel.

vi. Key operated independent service switch, on main panel only, exposed flush on faceplate.

vii. Provisions for hands-free emergency communication system; i.e. speaker perforation, buttons, operating instructions, signage, etc.

viii. Fire phone jacks.

c. All exposed car controls shall be at least 3/4 inch in size. All control buttons shall be designated by Braille and raised standard alphabet characters for letters, arabic characters for numerals, and standard symbols as required by the A17.1 Code.

Identification markings for all exposed controls shall be adjacent in a contrasting color background to the left of the controls. Symbols, letters, or numerals shall be a minimum of 1/2 inch high and raised or recessed 0.030 inch. The control button for the main entrance shall be designated by a raised star to the left of the button.

Symbols shall be industry recognized standard types firmly affixed without adhesives.

d. The emergency stop and emergency signal bell devices shall be approximately 35 inches above the car floor. The highest car dispatch button shall be no more than 54 inches above the floor.

e. A metal service cabinet shall be located directly below, or arranged as an integral lower section, of the main car operating panel. The service cabinet shall have a hinged door with independently keyed cylinder lock. Door shall be arranged to swing away from the elevator entrance. The following devices shall be mounted behind the metal door:

i. Car light switch.

ii. Car fan or blower switch.

iii. Emergency light test button.

iv. Keyed inspection switch to permit use of hoistway access switch.

v. 110 V GFI duplex receptacle complete with wiring and cover installed in service cabinet of each car.

f. The devices in all car operating panels shall be located in identical relative positions.

Readable, indelible markings shall be provided for each device as required to indicate its identity and positions.

g. Provide new landing button signal fixtures, with space and wiring for future card reader control for security system for all elevators containing up and down buttons at each intermediate landing, single button fixtures at each terminal landing, and an integral registration light for each button. The group of elevators shall have landing call buttons, installed at ADA height in the existing locations. All hall stations shall include engraved flame pictograph and “in case of fire” instructions.

15. MICROPROCESSOR GROUP SUPERVISORY CONTROL

a. Microprocessor Group Automatic Control: The microprocessor dispatching shall be based on an advanced 64 bit microprocessor computer system that continuously scans and analyzes every elevator's changing position, condition and workload. It shall compute the potential arrival of every car in REAL TIME; it shall assign and reassign hall calls to the car that can arrive there the quickest. Supervisory and individual controllers shall be of the floor mounted, free standing type with NEMA 1 enclosures, with locking cabinet doors.

b. REAL TIME Management of the dispatching shall permit the microprocessor to forecast the requirements for elevator service. The following elevator system information shall be taken into account to calculate the time required for each of the cars to travel to a hall call. The car with the MINIMUM RESPONSE TIME is dispatched to the hall call.

i. ETA System Information:

1. Elevator in or out of service

2. Elevator in bypass mode

3. Elevator at lobby in NEXT mode

4. Direction and position of each elevator

5. Condition of the car doors: open, closed, opening, or closing.

6. Condition of each elevator: accelerating, full speed, decelerating.

7. Number of stops required due to car calls

8. Coincident car calls

9. System conditions: up peak, down peak

10. Predictive car and hall call assignments. For example, in most instances, an up hall call causes a consequential car call to be registered. Forecasting future call movement in this manner gives the processor a more accurate "picture" of the developing traffic.

c. All of the above data shall be continuously scanned and hall calls shall be reassigned if the conditions change and another car can respond faster. Assignments shall be made at a rate of up to 16 times per second thus reflecting changes in the traffic on a REAL TIME basis.

d. Heavy Up Incoming Traffic Conditions: The microprocessor shall automatically recognize heavy incoming traffic in the morning, as well as other times during the day, by monitoring changes in car loads, the number of car calls registered, and the frequency of cars departing the loading dock. The incoming traffic intensity shall determine the number of cars assigned to the lobby. The system shall recognize the increasing incoming traffic early and react in a controlled manner.

e. Once a car completes its up trip after it has answered its car calls and any up hall calls assigned to it, it shall then reverse and proceed to the loading dock floor, provided the system is still in heavy up. The assignment of these up and down hall calls is described in the following paragraph.

f. When the incoming traffic becomes lighter, the microprocessor shall allocate cars from the loading dock accordingly. The other cars park with their doors closed at the landing they last served.

g. Select Hall Waiting Time (Up Peak): The up and down hall call response time shall be preset so that these calls can be answered in an adjustable minimum/maximum time interval, permitting better service to the incoming traffic. When this feature is enabled, the microprocessor shall calculate the potential arrival of each car, and assign or reassign the up and down hall calls (with the exception of the loading dock floor) to the car that meets the selected service requirements, and not necessarily to the car with the best potential arrival time. If the calculated ETA's do not satisfy the minimum/maximum time interval, microprocessor shall assign the call to the car having its ETA closest to the minimum selected service. This feature shall be implemented on a per floor basis.

h. Heavy Down Traffic Conditions. The microprocessor shall automatically recognize heavy ongoing or down traffic by monitoring the number of down hall calls, their ETA and the actual waiting time. During this mode, the down hall calls shall be given preferential service to handle the traffic which can occur in the evening or other time during the day. All cars assigned to the loading dock floor shall be released.

Cars arriving at the lower dispatching terminal shall light their lantern and remain at the terminal for the same length of time as for any other floor. All down hall calls are assigned based on which car has the best potential arrival time. The assignment of the up hall calls is described in the following paragraph. Down peak traffic mode shall have priority over up peak.

i. Select Hall Waiting Time (Down Peak): The up hall call response time shall be preset so that these calls can be answered in an adjustable minimum/maximum time interval permitting better service to the outgoing traffic. The assignments shall be made the same way as under "Select Hall Waiting Time (Up Peak)" but for the up hall calls only.

j. Two-way Traffic Conditions. All hall calls shall be given equal priority during this mode. An adjustable number of cars (usually one) is assigned at the loading dock terminal. Available cars shall be parked at the last floor served and can be assigned to hall calls above or below their position. A car traveling up or a car traveling down shall not be required to travel to the terminal floor or to the main floor. All car assignments shall be made on the basis of the best forecast. Since the forecast is continually updated, reassignment of the call is also made based on the best time, always ensuring the quickest possible response.

k. Intermittent or Light Traffic. The microprocessor shall automatically keep the required number of cars in service based on the forecast waiting time. Cars shall remain parked at the last floor served.

l. Loading Dock Terminal Demand. The microprocessor shall always ensure that there is an adjustable number of cars at the loading dock during off peak conditions. When there is no next car at the loading dock, the ETA of the down traveling cars shall be calculated. If no car can reach the lobby in an adjustable time, a loading dock demand is automatically placed to an available car.

m. Coincident Calls. The microprocessor shall give priority in its assignment of a hall call to a car with a corresponding car call. If this coincident hall call cannot be answered within the adjustable priority time, the car with the best potential arrival time shall then be assigned.

n. During peak conditions, the priority time is increased (adjustable) to further benefit from the elimination of a stop due to the coincident call.

o. Nonvolatile Memory. A nonvolatile memory (EPROM) shall be used to store the following group adjustments:

i. Number of cars required at loading dock

ii. Number of cars required in the high zone

iii. Up peak traffic detection parameters

iv. Minimum up peak duration

v. Down peak traffic detection parameters

vi. Minimum down peak duration

vii. Traffic demand parameters to release the next car

viii. Select hall waiting time parameters

ix. Coincident calls maximum waiting time

x. The stopping table for all the cars with the direction of the stops

xi. Security information

xii. Special features such as dual and alternate lobby floors, V.I.P. service floor, priority floors, etc.

16. MACHINE ROOM

a. Machine rooms shall be fire and life-safety code compliant.

b. Provide GFI outlets and disconnects required by Code in the machine room, pit and hoistway. Provide that all light switches are accessible from the entry of pit access doors.

17. EMERGENCY POWER OPERATION

a. If emergency power is provided make all necessary cross connects for functional operation, to include pre transfer wiring and switches.

18. GROUP CAR CONTROL FUNCTIONS

a. Supervisory and individual controllers shall be of the floor mounted, free standing type with NEMA 1 enclosures, with locking cabinet doors.

b. Leveling: An automatic two-way leveling device shall be provided and designed to govern the leveling of the car to within 1/4" above or below the landing sill. Any other travel or under travel or rope stretch shall return the car level to the landing sill automatically with the first movement of leveling.

c. The doors shall open automatically when the car arrives at the floor to permit transfer of passengers. After an adjustable time interval, the doors shall automatically close.

d. Pre-opening shall be initiated as the computer calculates the correct point at which to initiate the door opening using both velocity and distance information.

e. Door Timing: The door open time shall be field adjustable with resolution of 0.1 second. The dwell time for a car call stop shall be adjustable between one and eight seconds, and the dwell time for a hall call stop shall be adjustable between three and eight seconds. The hall call timing shall predominate. In the event the light beam is interrupted, the door open time shall be reduced to an adjustable 0.5 to ten seconds and shall be separately adjustable for a car or hall call stop.

f. Door Protection: When the doors do not open or close perfectly according to their respective operation, they repeat or recycle the operation for a period of four minutes.

After that time, the microprocessor shall shut down the car to prevent any damage to the door equipment.

g. Nudging: In the event the doors are held open for a predetermined adjustable time interval (15-20 seconds) after automatic door closing has been initiated, a buzzer shall sound and a signal given to close the door a reduced speed and torque.

h. Operating Controls.

i. Anti-Nuisance: In the event that there are a number of car call stops (adjustable one to ten) and the light beam is not interrupted, all the car calls shall be canceled.

ii. Bypassing and dispatching due to Load Weighing: The elevator shall bypass hall calls when their respective load weighing inputs are energized at 67% of rated capacity and dispatch when inputs indicate 50% of rated capacity is loaded.

iii. Emergency Operation: The elevators shall be recalled in the event of a fire or other emergency conditions. The operation shall be according to ANSI/ASME A17.1 - 2010.

iv. Independent Service: The control shall provide for operation of each elevator from car buttons only. Under this operation, door closing shall be initiated by constant pressure of the car buttons or the door close button.

v. Continuity of Service: In case of malfunction of the group computer or of the network, the individual car computer shall provide continuity of service. Hall button circuits shall be "bussed" to each car. The floors and the direction of the stops under this operation shall be field adjustable on a per car basis.

vi. Out of Group Operation: In the event the car does not start for a hall call dispatch signal, the car shall remove itself from group operation after an adjustable period of time (10 to 45 seconds).

i. Nonvolatile Memory: A nonvolatile memory (EPROM) shall be used to store the adjustable parameters which include:

i. Drive: Soft start, acceleration, deceleration, leveling velocity, and response and all offsets.

ii. Doors: Long door time, short door time, nudging, door open protective time and door close protective time.

iii. Selector: The floor reference position and the slowdown limit reference position with associated operation velocity.

iv. Dispatch: The out of service time due to dispatch loss and the emergency floor stops.

v. Others: anti-nuisance stops, etc.

19. INDIVIDUAL CAR CONTROLLER

a. The microprocessor based individual car controller shall be designed and constructed with the following minimum requirements:

i. Controller: The car controller shall be based on a 8/16-bit microprocessor using 4K bytes of static Random Access Memory (RAM) a minimum of 16K of Erasable Programmable Read Only Memory (EPROM). Provisions shall be made to expand the on-board RAM to 12K and the EPROM to 48K.

ii. Switch and Relay Designs: All switches and relays shall have contacts designed for maximum conductivity and wiping action.

b. The microprocessor based group management controller, and the communications network shall be designed and constructed with the following requirements:

i. Controller: The dispatch controller shall be based on an 8/16-bit microprocessor using minimum 8K bytes of static Random Access Memory (RAM) a minimum of 16K of Erasable Programmable Read Only Memory (EPROM) Provisions shall be made to expand the on-board RAM to 16K and the EPROM to 48K.

ii. Communications Network: A full duplex RS-422 multidrop network shall be utilized for the communications link between each car.

20. COMPUTING ENVIRONMENT

a. Design Specifications: Where computing devices are used, such as microprocessors along with associated devices, the following design specifications shall be provided:

i. All inputs from external devices (such as push-buttons) and all outputs to external devices (such as indicators, relays) shall be isolated with opto-isolation modules.

ii. All external connections to the opto-isolation modules shall be fused.

iii. All opto-isolation modules and associated fuses shall be plug-ins.

iv. Crystal frequency regulation shall be used for the main processor clock.

b. Printed Circuits and Solid-State Hardware:

i. All printed circuit boards shall be fabricated with G10 glass epoxy material with a minimum equivalent two ounce copper.

ii. All printed circuitry shall be coated with tin-lead.

iii. A solder mask screen shall be provided.

iv. A silk screen with outline and component identification shall be used on all printed circuit boards.

v. All printed circuit board edge connections shall be gold plated.

vi. All solid-state hardware shall have built in noise suppression devices which provide a high level of noise immunity.

21. GUIDE RAILS

a. All rails and bracket fastenings shall comply with requirements of the A17.1 Code.

The contractor shall submit for approval the required seismic calculations. Main and counterweight rails for all elevators shall be realigned, and re-painted.

b. Guide rails shall be realigned plumb and parallel with a maximum deviation of 1/16 inch. All shimming required shall be of metal securely held in place. Splice plates shall not interfere with supporting clamps and brackets in place. Splice plates shall not interfere with supporting clamps and brackets. Each splice plate bolt shall be drawn up tight. The guide rail anchorage in pit shall not reduce the effectiveness of the pit waterproofing.

c. Before the cars are placed in service, rails shall be thoroughly cleaned and smoothed and painted. When the car is tested the rails shall be clean, free from rust and any signs of abrasion.

22. SAFETIES AND GOVERNOR

a. The governor shall be equipped with rope grip jaws designed to clamp the governor rope so as to activate the car safety upon a predetermined overspeed downward. The rope grip must be positively tripped within the permitted range of speeds. Rope grip jaws which float with governor movement will not be permitted.

b. Governor sheave shall be of hard alloy cast iron, cast steel or semi steel of approved composition with true running machine finished groove and flanges. Sheave shall be free from cracks, sand holes or other imperfections.

c. The governor sheave shaft shall be manufacturer's standard. Suitable bearings and means of lubrication shall be provided for all other rotating parts, link pins, etc.

d. Governor rope gripping device shall be so designed that no appreciable damage to or deformation of the governor rope shall result from the stopping action of the device in operating the car safety. The rope grip jaws for a governor using a Type B safety shall be of the parallel jaw type of such shape and length that pull through action of governor rope as required by A17.1 Code will result in a minimum amount of rope abrasion.

e. The governor, governor rope and weighted tension sheave shall be mounted in such locations as to minimize danger of accidental injury to the equipment. Metal guards shall be provided to protect the governor rope, gears, and rope gripping device from accidental fouling by maintenance personnel.

f. The governor overspeed switch shall be so located and enclosed that excess governor lubricant will not enter switch enclosure.

g. Governor parts (with the exception of finished bearing surfaces, screw threads, etc.)

shall be finished at the factory with machine enamel. No painting of governor parts at the building will be permitted. Painting shall consist of a priming coat and not less than one factory finishing coat of machine enamel.

h. The governor rope weighted tension sheave in pit shall operate in steel guides which shall permit free vertical movement of sheave while maintaining a uniform predetermined governor rope tension. Tension sheave shall be similar to governor sheave and shall be provided with similar type bearings.

i. Safeties and safety rod shall be thoroughly disassembled and cleaned, replacement shoes and other components shall be replaced as needed. Safeties are to be in like new condition upon completion of project and prior to any testing being performed.

23. HOISTING AND GOVERNOR ROPES

a. Shop drawings shall indicate the number and size of hoisting ropes, belts or cables to be used, the name of manufacturer, type, ultimate strength in tons, and the factor of safety.

b. Where hoisting ropes or belts run around a sheave or sheaves on car and counterweight, suitable guards shall be provided.

c. The governor rope shall be 6 by 19 or 8 by 19 wire rope, iron or traction steel, uncoated, fiber core suitable for the governor furnished. The appropriate shackling, socketing and inspection procedures outlined in "Practice for the Inspection of Elevators, Escalators, and Moving Walks, Inspector's Manual" (ANSI A17.2) shall be followed.

d. The governor rope data tag shall be of corrosion resistant metal.

24. COUNTERWEIGHT

a. Counterweights shall be provided for the elevator equal to approximately the weight of the complete car and 40 percent of the specified rated load. Cracked or broken sub-weights will not be accepted. Material for weights shall be steel.

25. CAR AND COUNTERWEIGHT BUFFERS

a. The partial compression of return oil buffers when the car is level with terminal landings shall not be acceptable.

b. Buffer marking plates shall be of a corrosion resistant metal. In addition to the data required by A17.1 Code, the marking plates for oil buffers shall indicate the manufacturer's name, buffer identification number and the buffer stroke.

c. Elevator shop drawings shall indicate the name of buffer manufacturer, buffer identification number, buffer stroke, certified maximum and minimum loads, and certified maximum striking speed.

d. Paint all buffers, pit channels and pit equipment with finish coat of machinery enamel paint, in manufacturer's standard color.

26. TERMINAL STOPPING DEVICES

a. Stopping devices located in hoistway or on the car and operated by cams shall be fitted with rollers having a rubber or other approved composition tread to provide practically silent operation when actuated by the cam. Location of devices shall be as determined by the A17.1 Code.

27. ROLLER GUIDE ASSEMBLIES

a. Roller guide assemblies shall provide a smooth and vibration free ride within the elevator. Roller guide assemblies shall be provided with adjustable mountings and shall be rigidly secured in accurate alignment.

b. Each roller type guide assembly shall consist of rollers assembled on a metal base and designed and mounted to provide continuous contact of all rollers with the corresponding finished rail surfaces under all conditions of load and operation. Each roller shall be tired with a resilient oil resistant material and shall rotate on precision grade ball bearings. Ball bearings shall be pre-lubricated and sealed for life. The roller guide assemblies shall operate quietly under all conditions.

c. Adjust roller guides on all cars and counterweight frames. All elevator cars shall be balanced in both post wise and front to back directions.

28. CAR FRAME AND PLATFORM

a. Car frames shall be cleaned to be free from dust, dirt and debris, paint any exposed raw steel that may be subject to rust.

29. ELEVATOR CABS

a. Unless otherwise specified, the top emergency exit panel shall be of sheet steel with finish to match car interior walls, and shall meet the seismic requirements of the A17.1 Code. When car has plenum chamber ventilation, removable panel sections shall be provided in both car ceiling and plenum chamber and shall be so constructed that the entire top emergency exit may be removed as a unit. An electric contact shall be provided for top emergency exit (to prevent operation of elevator when exit panel is open).

i. The car top shall be suitably braced to meet requirements of the A17.1 Code.

Exit details including hinging and locking arrangement of emergency exit door where required, shall be shown on shop drawings.

b. A ventilation system of exhaust type shall be provided for each elevator arranged to exhaust air through opening around suspended ceiling.

i. The system shall include a blower driven by a direct connected motor and mounted on top of car with isolation to effectively prevent transmission of vibration to the car structure. The blower shall have not less than two operating speeds with a rated free delivery air displacement of approximately 380 and 265 c.f.m. at the respective speeds. The unit design and installation shall be such that the maximum noise level when operating at high speed shall not exceed 55 dba approximately three feet above the car floor. A three position switch to control the blower unit shall be provided in the car service cabinet.

c. Car interior lighting shall be replaced with LED energy efficient lighting.

Incandescent light fixtures with plastic guards shall be provided on top of car and also beneath the car platform. Duplex receptacles shall be provided on the top of the car and beneath the car platform to supply 120 V.A.C. outlets shall be 2 pole, 3 wire grounded type rated for 15 amperes at 125 volts conforming to Federal Specification W-C-596/12A.

d. The lighting system for all elevators shall be required to achieve initial output of 10 foot candles at any point on the floor. Lighting shall be controlled by on/off switch located in car station control panel.

e. The doors shall be hung on suspension sheave type ball bearing hangers similar to those specified for hoistway doors except that sheaves shall be of sound reducing design. The door panels shall be rigid and reinforced for installation of hangers, door operating equipment, door re opening device and hardware. Door panels shall be guided at the bottom by nylon or composition gibs engaging door threshold grooves with a minimum clearance. Gibs shall be easily replaceable without removing doors from hangers. Rubber bumpers shall be provided for door similar to those specified for hoistway door. Minimum clear width shall be existing.

f. The car capacity plate shall be of stainless steel and NO equipment manufacture shall be engraved or located on the car operating panel.

30. EMERGENCY CAR LIGHTING

a. An emergency car lighting and alarm bell system shall be provided in each freight elevator consisting of a rechargeable battery, charger, controls and light fixture. The system shall automatically provide emergency light in the car upon failure or abnormal interruption of the normal car lighting service and shall function irrespective of the position of the light control switch in the car. (Emergency lighting shall be provided within the car operating panels.).

b. The battery shall be, sealed, maintenance free, of either lead acid or nickel cadmium construction and designed to give a life expectancy of not less than ten years. The term "sealed" shall mean sealed against the loss of electrolyte and against gassing except for over pressure vents which shall be leak-proof. Batteries using adapter type water conserving or catalytic devices are not acceptable.

c. The charger including rectifier and controls shall be solid state except load relay, if used, shall be hermetically sealed. The charger shall be of the two rate type and capable of:

i. Restoring the battery to full charge within 16 hours after resumption of the normal power supply following a continuous discharge of 4 hours through the connected lamp load.

ii. Automatically maintaining the battery in a full state of charge under normal power supply conditions.

d. The battery, charger and controls shall be housed in an enclosure of either sheet steel or molded plastic with a dust-tight removable cover. The enclosure shall be designed for permanent mounting on the elevator car top and shall be of sufficient strengthto prevent any malfunction or damage.

e. A constant pressure switch that automatically returns to the "Off" position when released, and pilot light, for the periodic testing of battery and lamps shall be provided on the exterior of the battery enclosure. An emergency light test switch shall also be located in the locked service cabinet inside each car.

31. TELEPHONE

a. Provide “hands free” telephone device in each car integral within car control station with programmable auto-dialer and tracking and recall features to meet requirements of ADAAG and drilled speaker pattern.

i. Auto dialer shall be programmable to call more than one number, at different times of the day.

ii. All telephones shall have a dedicated phone line. Phone lines shall be terminated in the machine room at a junction box to be located next to each controller.

iii. Provide push to talk button with identification plate and all signage required adjacent to alarm button.

iv. Telephone dialer shall utilize a prepared message with building and elevator information, then shall allow voice communication. Illuminate button to indicate call registration and provide means to cause indicator light to flash when call is answered.

b. Furnish and install all traveling cables, conductors, conduit, etc., required for the telephone service from the telephone cabinet in the car to the telephone outlet box at the hoistway half way junction box of machine room.

32. CERTIFICATE FRAME

a. Provide engraving stating “Elevator Inspection Certificate on File in Building Manager’s Office” on main car operating panel.

33. WALL PROTECTION PADS:

a. Provide pads and pad hooks for each elevator.