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Chapter 1 INTRODUCTION

This specification document is to describe the complete work for one no.of Passenger cum Goods Elevator of capacity 17 (min) passenger with 5 stops to16 m elevation (0, 0+4.75, 0+7.75, +11.35, 0+16 m) to be commissioned inside theNew PS2/GS2 integration building under Stage assembly & integration entity ofISRO Propulsion complex (IPRC), Mahendragiri.

All equipments shall be designed, fabricated and selected as per relevantIndian Standard/International Standard and upto date engineering practices andnecessary inspection/test certificates shall be submitted along with equipmentsupply to certify the quality and genuineness of components.

Chapter 2 SCOPE OF WORK

2.1 The scope of work of the contractor includes design, engineering, manufacture,assembly, inspection and testing, at manufacturer’s shop as well at site aftererection, supply including dismantling for transportation, packing, forwarding,loading and transportation to site, receipt & unloading at site, re-conservation atsite, erection, testing and commissioning of Machine room less Passenger lift ofcapacity 1150 kg (min) as per technical specifications indicated in Table 1 atISRO Propulsion Complex, Mahendragiri, Tamil Nadu.

2.2 Scope includes servicing of the unit at free of cost during the warranty period of1 year from the date of commissioning.

2.3 IPRC will provide 415V+/- 10%, 3 phase, 50 HZ+/- 5%, 4 wire power supply atthe isolator/incomer of lift panel (by contractor). Scope of the contractorincludes complete wiring from point of power supply onwards for safe andsatisfactory operation of the elevator.

2.4 Obtaining statutory clearances from statutory authority.

2.5 The scope of work shall stand supplemented by this specification, the clearancediagram and general specification on quality system, inspection and test ofequipment at manufacturer’s premises and other commercial terms & conditionstipulated in the tender document.

2.6 Supply of any spares needed for successful commissioning of the elevator.

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2.7 Supply of initial requirement of oil, lubricants & cleaning/ flushing fluidincluding replenishment during erection, testing and commissioning of theelevator.

2.8 Building structures with floors and civil foundation work for buildings, areexcluded from the scope of work of the supplier. Shaft size available at site forelevator is 4000 (W) X 2680 (Deep) and pit depth is 3000 mm.

2.9 Any special tools and tackles required for operation and maintenance of theelevator shall be included in the scope of supply of the tenderer. A list of suchtools and tackles shall be furnished by the Tenderer.

2.10 IPRC will provide the telephone junction box at the bottom. Party has to makearrangement for supply & erection of telephone cable up to the lift.

2.11 Supply of following drawings, documents and manuals:

a. Drawings/documents for approval

i) Detailed civil drawings for guide rails are to be supplied.

ii) The General arrangement drawing of elevator showing the completeelevation and plan views of hoist way of elevator, ground pit plan withnecessary insert details and load data.

iii) Detail arrangement drawing of elevator car showing all accessories andfittings attached to the car.

iv) Following details shall also be submitted by the successful tenderer forapproval prior to start of manufacture:

GA of control panel.

GA & Data sheet of motor.

GA of battery, battery charger & Inverter panel and Calculationfor battery rating.

Power and control schematic diagram

Cable schedule & Cable data sheet

Schematic control circuit drawing with wiring diagram.

Control write-up & detail of interlocking of lift operation.

Motor power calculation for the elevator.

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Leaflets and catalogues for motor, brake, couplings, bearings,wire rope and electrical equipment etc.

b. Distribution copies of approved drawings and documents:

After approval, three sets of approved drawings and documents shall befurnished by supplier to ISRO for necessary distribution.

c. Drawings documents for approval of statutory authority:

Required number of copies of drawings for approval of statutory authority shallbe submitted prior to first shipment or sufficiently in advance so as to take careof statutory clearances required at appropriate time.

d. Drawings and documents to be furnished along with the supply of equipment:

i) Instruction manual giving instruction for erection, pre-commissioning,check-up, operation, abnormal condition, maintenance and repair etc.

2.12 Scope of work of the Tender shall also cover supply, erection testing andcommissioning of all electrical items as covered under Electrical details.

2.13 Scope of supply shall include the following equipment and auxiliaries for thesafe and efficient operation of lift, but not limited to:

Microprocessor based control with AC V3F / servo drive.

Counter weight, counter weight frames, guides, shoes and fixtures.

Landing doors with locking devices

Safety gears

Buffers with fixing arrangement for car & counterweight

Lubricators

Fans

Junction boxes, panels, switches, MCB/MCCB, etc.

Armoured/ flexible copper cable wiring

Automatic Rescue Device

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LED Car lighting

Display panel with Floor level indication in car and floor

Emergency Light and alarm unit in car

Car trailing copper cables.

Intercom Telephone

2.14 Erection, testing and commissioning of elevator at IPRC.

Chapter 3 Terms & Conditions

3.1 The Tenderer shall quote for full scope of work as covered under Chapter 2.0and other relevant clauses, terms & conditions as follows.

3.2 The Tenderer shall submit following drawings/documents with tender forelevator:-

i) General arrangement drawings/clearance diagram of the Elevatorindicating load data, details of various openings in machine room floor aswell as lift well shaft, inserts details for fixing of guide rails, buffers etc.

ii) Compliance statement against the technical specification in table 1.

iii) Other supporting documents e.g. Leaflets, catalogues etc.

3.3 All the drgs and documents will be in English language. Drawings shall becomplete in all respects with dimensions, item lists, weights, sub-supplier’s nameetc.

3.4 The supplier shall furnish the instruction manuals containing following categoryof information:-

i) Instruction for Erection

ii) Instruction for pre-commissioning check-up, operation, abnormalconditions, maintenance and repair.

iii) Write-up on control and interlock provided.

iv) Recommended inspection points and period of inspection.

v) Schedule of preventive maintenance.

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vi) Recommendation for type of lubricants, lubrication points, frequency oflubrication and lubricant changing schedule.

vii) The information shall be organized in logical and orderly sequence. Ageneral description of equipment including significant technicalcharacteristics shall be included to familiarize operating andmaintenance personnel with equipment.

viii) Necessary drawings and other illustrations shall be included or copies ofappropriate final drawings shall be bound in the manual. Test,adjustment and calibration information, as appropriate, shall be includedand shall be identified to the specific equipment. Safety and otherwarning notices and installation, maintenance and operating cautionsshall be emphasized.

ix) A part list shall be included showing part nomenclature, manufacturer’spart number and/or other information necessary for accurateidentification and ordering of replacement parts.

3.5 All documents for the electrical and mechanical equipment to be supplied withthe elevator shall be put for inspection along with the equipment.

3.6 Pre-delivery inspection of the elevator will be carried out by IPRC engineers atparty’s site prior to despatch.

3.7 Inspection shall be regarded as a check up and shall be in no way binding on thepurchaser. The elevator supplier shall give the inspection call well in advance toIPRC.

3.8 The supplier shall ensure that minimum amount of assembly at site for earlycommissioning of the elevator after delivery.

3.9 Dimension of all parts used in the elevator shall conform to metric standards.

3.10 The Tenderer shall include in his scope and provide with all and anycommissioning spares required for proper erection and commissioning of theequipment.

3.11 The contractor shall indicate their requirement of electric power for erectionpurpose. The power shall be supplied at one point of erection site on paymentbasis. Further distribution to different points shall be carried out by the erectioncontractor. The power shall be supplied at 415V+/- 10 %, 50HZ+/- 5%, 3PH, AC.

3.12 The contractor shall supply all consumable and auxiliary materials likescaffolding materials, soldering flux, electrodes, insulation material, PVC tapesand other sundry materials needed for the completion of erection.

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3.13 The erection, testing and commissioning of the elevators shall be done inpresence of the representative of the manufacturer (Party) and purchaser(IPRC).

3.14 Lift commissioning & acceptance test - Tests shall be carried out on lift inaccordance with the relevant portion of IS 14665. As part of the designsubmission, the Contractor shall submit to the Purchaser for acceptance, aschedule of tests giving full details of all tests to be carried out. The followingtests shall be carried out at site.

i) Insulation tests

ii) Operation tests

iii) Overload tests

iv) Interlocks

v) Alarm & indications

vi) Automatic rescue device functions

vii) Earthing tests

The Contractor shall prepare and forward to the Purchaser, all Test Reports assoon as practicable after completion of each test. All test data shall be certifiedby the Contractor’s Professional Engineer.

3.15 While conducting tests on the elevator, the contractor shall be held responsiblefor any manufacturing defect as well as for defective workmanship carried outduring the erection work. The contractor shall arrange for slings, wire ropes,stop watches and other necessary equipment/ instrument to carry out the test.

3.16 After completion of the work, the contractor shall promptly remove from thepremises everything brought in by him and shall leave the premises in anacceptable clean condition.

3.17 Painting

The structural material shall be painted in manufacturer’s work as well as at thesite after assembly/erection. The elevator’s shop fabricated items shall be sandblasted and given two coats of zinc rich primer of required thickness beforetransported to site for erection. The site fabricated item, if any, shall also beprimer painted before erection.

The paint material, colour scheme/shade and the manufacturer’s paintingprocedure shall be as per standard.

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After erection the elevator shall be painted as follows: All the damaged primer

painted area shall be rectified by touch-up painting with primer paint. Then the

intermediate coat of paint of required thickness shall be applied. Subsequently,

final coat of paint of approved quality and shade shall be applied.

Chapter 4 TECHNICAL SPECIFICATION

Table 1: Technical Specifications

Sl.No. Item Description

1 Capacity (Kgs) 17 persons, 1150 Kg (Minimum)

2 Speed (m/s) 1 – 1.5 m/sec.

3 Rise (m) 16 m

4 Stops 5 Stops with all opening on the same side (at centre)

5 Drive VF Regenerative (Closed Loop) / servo control

6 Power Supply 400/415 Volts (3 phase AC)

7 Operation Full collective operation

8 Machine Permanent Magnet Gearless

9 False ceiling False ceiling with LED lights & Emergency light

10 False Ceiling Finish Stainless Steel hairline finish

11 Ventillation Cross flow fan

12 Hand rails Stainless Steel Mirror Finish Handrails on 3 sides

13 Flooring Stainless steel

14 Car door finish Stainless Steel (Hairline)

15 Landing doors finish Stainless Steel (Hairline)

16 Fire rated doors Fire rating -60 mins

17 Shaft size available 4000 mm (W) x 2680 mm (D)

18 Pit depth 3000 mm available; Requirement to be provided.

19 Car dimensions (WxDxH)Maximum size of near square shape having optimalwidth and depth to fit in the shaft. W x D to befurnished by party. H = 2200 mm (Nom.)

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Sl.No. Item Description

20 Car & hoist way door type Central opening (CO) doors

21 Door (Wx H) 900 mm (W) x 2000 mm (H) (Nom.)

22 Door operations Automatic closing & opening.

23 COP Surface mounted buttons in Stainless steel

24 Car position indicator LCD type.

25 Safety features

1. Automatic Rescue Device,2. Overload Device,3. Nudging,4. Emergency Firemen’s Service,5. Emergency Car Light Unit,6. Infrared Curtain Door Protection,7. Door Time Protection,8. Emergency Alarm Button,9. Extra Door Time of ground floor,10. Door Open/Close Button,11. Auto Fan Cut off,12. Intercom telephone.

Note:1. The clear height available in one of the floors is 1850 mm only. This should be

considered while designing.2. Since the shaft width is 4000 mm, necessary vertical steel structure support for

guide rails to be considered.

4.2 Standards

The elevators shall conform to the following stipulations, in general:

IS 14665: Part 2:Sec 1 & 2

Code of Practice for Installation, Operation and Maintenanceof Electric Passenger and Goods Lifts

IS 2266 Steel Wire Ropes for General Engineering Purposes –specification

IS 14665: Part 2:Sec 1 & 2

Electric passenger and goods lifts

IS 14665: Part 4: Safety gears and governors for electric passenger and goods

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Sec 1 to 9 liftsIS 14665: Part 4:Sec 1 to 9

Brakes for electric passenger and goods lifts

IS 14665: Part 4:Sec 1 to 9

Car and counterweight guide shoes for electric passenger andgoods lifts

IS 14665: Part 4:Sec 1 to 9

Buffers for electric passenger and good lifts

IS 14665: Part 1 Outline dimensions of electric liftsIS 14665: Part 2:Sec 1 & 2

Code of Practice for Installation, Operation and Maintenanceof Electric Service Lifts

IS 14665 Part-1: Guidelines for Outline Dimensions of Passenger,Goods, Service and Hospital Lifts.Part 2 : Code of Practice for Installation, Operation andMaintenancePart 3 : Safety RulesPart 4 : ComponentsPart 5 : Inspection Manual

4.3 General requirements

a. Lift shall be capable of operating satisfactorily and smoothly at a rate of 120motors starts per hour or above for a period of not less than 20 hours per day,seven days a week, within the environmental conditions specified below:

i. Temperature• Maximum Temperature in shed: 311 K (38 °C)• Minimum Temperature: 293 K (20 °C)

ii. Humidity• Maximum Relative Humidity : 80%• Minimum Relative Humidity : 25%• Climate : Tropical

iii. Seismic Zone• The systems shall be designed for seismic load confirming to zone 3 as

per IS: 1893 latest edition.

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• All the equipment shall be of tropical design according toIndian/International standards. The equipment shall comply with allstatutory requirements applicable in the state.

b. The design of the lift shall take into consideration of fire prevention, elimination

of dust and dirt traps and easy accessibility for cleaning and routine

maintenance.

c. The Contractor shall take into consideration, the corrosive effect of the

atmosphere in the Lift design.

d. Machinery noise level under normal operating conditions shall not exceed 70 dB

(A) at 1m from the equipment in free field. The total noise level in a moving lift

car shall not exceed 55dB (A) with ventilation fan operating.

e. Lift shall be provided with earthing arrangements as per IS 1860 (latest edition).

f. All parts requiring replacement or inspection or lubrication shall be easily

accessible without the need for dismantling of other parts/equipment. All

electrical cables shall be so laid that they are not liable to damage and can be

easily inspected and maintained.

g. Safe access for maintenance and removal of all mechanical and electrical parts

shall be ensured, without additional scaffolding.

4.4 Drive Machinery

a. Electric Supply

The lift shall be suitable for operation with three phase, 50 Hz±5%, 415 V±10% ofthe rated supply voltage.

b. Compact Gearless machine (PM Gearless):

The lift machine shall be of Permanent Magnet Gearless type suitable for V3Fcontrol with controller and drive placed within the shaft.

c. Motor

The drive motor shall be AC self-lubricating motor suitable to withstand frequentpeak current, encountered in the lift duty and shall have high starting torque, high

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power factor, high efficiency, low energy consumption and low starting current.Thermistor shall be embedded in starter windings to indicate the temperature andtripping.

The motor shall be capable of not less than 120 starts per hour without excessivetemperature rise. The maximum temperature rise of the winding shall not exceed50°C above ambient temperature when operated under normal condition.

The motor shall carry a nameplate giving full details of its ratings andcharacteristics. Motor shall be of TEFC type. The motor used shall have Class Finsulation and shall be designed for 125% of rated load.

d. Sheaves

Sheaves and pulleys shall be of hard alloy, cast iron, SG iron or steel and free fromcracks, sand holes and other defects. The size of all the sheaves shall be inaccordance with clause 8.4 of IS 14665 (Part–4 Sec. 3):2000. Wherever necessary,suitable protective guards shall be provided. Sheaves shall be fitted with sealed forLife Lubricated Bearings.

e. Brake

The lift drive machinery shall be provided with an electromagnetic brake normallyapplied by means of springs in compression when the operating device is in offposition. The brake shall be suitably curved over the brake drum and provided withfire proof friction lining. The brake shall be fail safe and capable of operatingautomatically in case of normal current failure or due to operation of safety devicesor by the normal stopping of the car. The brake shall be released electrically.

f. Anti-Vibration supports

The whole traction machine shall be mounted on appropriate anti–vibrationsupports to minimize noise and vibration. Vibration isolation arrangement shall beprovided to prevent transmission of vibration to the building and structure.

g. Bearings

Bearings shall be either of anti-friction metal sleave type with oil reservoirs, self,lubrication, oil gauges, capped filler openings and drains of the ball roller orsintered type subject to oil flood lubrication or grease lubrication. Grease lubricatedbearings shall have grease gun connections and drain plugs. The bearings andlubricant reservoirs shall be dust free and shall incorporate effective seals to

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prevent leakage. Thrust bearings shall be of the ball or roller type and shall havetwo sets of balls or rollers arranged to minimize backlash for efficient working.Bearings shall not leak oil & shall be dust-free & self lubricating.

h. Guide rails

Guide rails shall be in accordance with clause 3 of IS 14665 (Part 4–Sec 2) 2000.The guide rails shall be continuous throughout the entire travel (every 5 metersconnected with tongue and groove arrangement with fish plates) and shallwithstand without any deformation under the action of safety gear with a fullyloaded car. The guide rail anchorage pit floor must be made without puncturing thewater proofing.

4.5 Lift Car

a. Car Interior & Lift Finishes

Lift car shall be vandal resistant stainless steel with self embossed Hairline design.

The car shall be equipped with SS handrails on three sides.

b. Car and Landing Entrances

The car door shall be centre opening horizontal sliding vandal resistant stainlesssteel with self embossed Hairline design. It shall be possible on power failure, toopen from the car side. The door opening and closing shall be accomplishedsmoothly and quickly without undue noise, vibration and shock and theirmovements shall be cushioned and checked at both limits. The Doors shall be ableto withstand horizontal or lateral load according to IS 14665 (Part4 /Section 6)2001.

c. Landing Doors

Landing Doors shall be slide type with Stainless steel hairline finish. The openingfor the landing gates or doors shall not be wider than that of the lift car. Eachlanding door shall be complete with locks, headers, sills, frames, rims, hangersupports with cover plates, facia plates etc.

4.6 Door Safety Devices

The doors shall be provided with full height light curtain having criss cross infraredbeams thoroughly covering the full height of Car door. In case of any interruptionwhile closing, the doors shall retract without physically touching the passenger.

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4.7 Levelling

The levelling accuracy between car & landing floor shall be as per IS 14665 Part 3Section 1.

4.8 Counter Weight

The counter weight for lift cars shall be in accordance with clause 6 of IS14665(Part 4-Sec-3): 2001 and shall be designed to balance the weight of empty lift carplus approximately 50 percent of the rated load.

4.9 Traction media (Wire ropes or Flat coated steel rope)

Lift Ropes shall be as per IS 2266 and IS 14665 (Part 4 / SEC 8)-2001. Round strandsteel wires ropes made from steel wire ropes having a tensile strength not less than12.5 T/cm2 and of good flexibility shall be used for lift. Lubrications between thestrands shall be achieved by providing impregnated hemp core. The lift ropes shallconform to IS 14665-(Part-4-Sec. 8):2001. The minimum diameter of rope for carsand counter weight of passenger and goods lift shall confirm to IS 14665 (Part4/Sec.8):2001 including all amendments. (Or)

Flat coated steel belt with coated ropes embedded inside Polyurethane.

Rope speed of passenger & goods lift (m/s) Factor of safety

0.5 or less 8

Exceeding 0.5 to 1.0 8.6

Exceeding 1.0 to 2.0 10

Exceeding 2.0 to 3.5 11

Exceeding 3.5 12

For Car & Counter weight ropes, however, Factor of Safety based on MaximumStatic Load shall be at least 12.

a. Rope fastenings

The ends of lift ropes shall be properly secured to the car and counter weight hitchplates as the case may be with adjustable rope shackles having individual tapersbabbit sockets or any other suitable arrangement. Lift rope shackle shall be fittedwith a suitable shackle spring, seat washer, shackle nut & lock & shackle nut splitpin.

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b. Number & Size of Ropes

The contractor must indicate the number and size of lift ropes and governor ropesproposed to be used, their origin, type, ultimate Tensile strength and factor ofsafety. The contractor shall furnish certificate or ropes from the ropemanufacturers issued by competent authority. Type Test & Routine TestCertificates shall be furnished. A Plate giving the Number, Size & Ultimate TensileStrength of the rope used shall be permanently fixed to the cross head. Beforeinstallation, Manufacturer’s Certificate shall be supplied for hoisting ropes with thefollowing data:

• Type of wire rope

• Diameter in mm

• Manufacturer’s rated breaking strength

• Manufacturing date

• Manufacturer’s Name

The Factor of Safety based on Maximum Static Load for car & counter weight ropesshall be at least 12. Ropes shall be attached to dead end hitch assemblies, fitting tosupporting beams, car frames, Counterweights by means of suitable Ropetermination. A Locking Device or Anti-Twist Rope Device shall be fitted to theroping System.

4.10 Safety Equipments

Lift installation shall necessarily be provided with the following safety features.

a. Governor

The car shall be operated by a speed suitably connected to the car and mounted onits pulleys. The over speed governor rope shall be not less than6 mm in diameter and shall be made of coated steel or phosphor bronze. Theseshall be in accordance with IS14665 (Part4/sec-4): 2001.

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b. Terminal Limit Switches

Terminal switches

Terminal switches shall stop the car automatically at terminal floors within the topand bottom permissible over travel. These shall act independently of the operatingdevices, the ultimate limits switches and the buffers. They shall be in accordancewith clause 8 of IS: 14665 (Part 3-Sec 1): 2000.

Ultimate Terminal Switches

Ultimate Terminal Switches shall be provided in accordance with the statutoryrequirements and standing practices. These shall arrange to stop the carautomatically within top and bottom clearances independently of the normalterminal switches but with the buffer operative. These shall be in accordance withclause 8 of IS: 14665 (Part 3/Sec 1)-2000.

c. Buffers

Buffer shall be as per IS 14665 (Part 4/Sec.1):2001. Buffers shall be spring type.Buffers shall be suitable for installation in the space available. Buffer anchorage atpit floors shall be installed avoiding puncturing of water proofing. The partialcompression of spring when the car is in level with terminal landing will not beacceptable.

d. Door Locks

Electro-mechanical door lock shall be provided for all the landing doors and theyshall be such that the doors cannot open unless the car is at rest at the particularlanding. It shall not be possible to move the car unless all the landing doors and thecar door are closed and locked.

All the locks and contacts shall conform to IS: 14665 (Part 4/Sec 6)-2001 and shallbe positive and pass the prescribed endurance and reliability test from a recognizedtesting laboratory. Location of locks and contacts shall be inaccessible to un-authorised personnel. Provision shall be made for opening of the landing door incase of emergency by means of a special key.

4.11 Controlling Equipment

The movement of the car shall be electrically controlled by means of a V3Fcontroller.

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a. Control Circuits

The control circuit shall be designed for safety operation of the lift. It shall not bepossible to start the car unless car and all the landing doors are fully closed andlanding doors locked. The circuit shall have an independent MCB/MCCB for faultand over loads and be arranged so that earth fault or an open circuit shall not createunsafe condition.

b. Terminal Boards

All wiring for external control circuits shall be brought to a terminal board withmeans of identification of wire. Metallic/ plastic identification tags shall invariablybe provided. All connections of wires to terminal boards shall be adequatelyclamped or screwed.

4.12 Emergency stop Switches

On top of the lift car an emergency stop switch shall be provided for use bymaintenance personnel. Operation of these switches/ buttons shall cancel all theregistered calls and landing calls for that particular lift.

4.13 Wiring, Cabling, Earthing etc.

a. Wiring

Fire retardant armoured copper cables of capacity one order higher thanrequirement shall be used. Cables shall be properly routed, laid in trenches/traysand suitably clamped.

b. Cabling

A single trailing cable for lighting control and signal circuit is permitted, if all theconductors of these trailing cables are insulated for maximum voltage runningthrough any one conductor of this cable. The lengths of the cables shall beadequate to prevent any strain due to movement of the car. All cables shall beproperly tagged by metallic / plastic tags for identification.

c. Earthing

Metal frames and all metal work of the lift controller frame etc. shall be earthedwith double earth leads taken to the earth bar. Looping shall be permitted if suchrouting is feasible. All other individual metallic frame work of components etc.shall be loop earthed. Lift shall be provided with earthing arrangements as perIS1860 (latest edition).

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4.14 Automatic Rescue Device (ARD)

The Automatic Rescue Device (ARD) is meant for the purpose of bringing the liftcar to the nearest landing door in case of power failure. The ARD shall have thefollowing features.

a. ARD shall move the lift to the nearest landing in case of power failure duringnormal operation of lift.

b. ARD shall monitor the normal power supply in the main controller and shallactivate rescue operation within 10 second of normal power supply failure. Itshall bring the lift to the nearest floor at a slower speed than the normal run.

c. While proceeding to the nearest floor the lift will detect the zone and stop. Afterthe lift has stopped, it automatically opens the doors and parks the door open.After the operation is completed by the ARD the lift is automatically switchedover to normal operation as soon as normal power supply resumes.

d. In case the normal supply resumes during ARD in operation, the lift willcontinue to run in ARD mode until it reaches the nearest landing and the doorsare fully opened. If normal power supply resumes when the lift is at the landing,it will automatically be switched to normal power operation.

e. All the Lift Safety Devices shall remain active during the ARD mode ofoperation. The battery capacity shall be adequate so as to operate the ARD atleast three times without recharging of Battery.

f. The Battery shall be housed in a cabinet /Rake with a Corrosion Proof Finish.The Device shall immediately stop the Lift and prevent further movementimmediately, if there is a short circuit or open circuit in the Inverter Output.

4.15 Ventilation

Lift Car shall be adequately ventilated to a minimum standard of 20 Air Changesper hour. The fans shall be recessed in the Car Ceiling as Appropriate. A Low SpeedFan of Low noise, axial blower type shall be used.

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4.16 Emergency Lighting

In addition to the normal lighting provided in car, a maintenance free emergencylight fitting shall be provided in Car, which may be the same type of fitting as thenormal light Car & shall illuminate immediately & automatically in the event offailure of the normal car lighting electrical supply. The fitting shall incorporate apermanently illuminated signal to indicate mains healthy and shall be connected toemergency battery. The Luminous Intensity of the Emergency Lighting shall not beless than 100 lux measured at Floor Level and on the Car Operating panels.

4.17 Electrical Requirements

a. Lift shall be designed to operate on a 415V ±10%, 3 phase, 4 wire, 230V±5%,AC 50Hz ±5% single phase, power supply.

b. The control wiring shall be laid out neatly and clearly in cable sleeves and allterminals and cables shall be labelled or marked for identification.

c. The circuit which supplies current to the motor shall not be included in anytwin or multi-core trailing cable used in connection with the control safetydevices /signaling equipment.

d. Main control cubicle shall be connected to a fused isolator which shall beprovided by lift supplier in an accepted location. The necessary trunking andwiring from this isolator to this control cubicle shall be provided and installedby the Contractor.

e. The design of the contactors and relay contacts shall be such that the break andmake contacts shall not be closed at the same time at any position of thearmature. The operating conditions shall be as follows:-

If one of the break contacts (i.e. normally closed) is closed, all the makecontacts are open.

If one of the make contacts (i.e. normally open) is closed, all the breakcontacts are open.

f. In the event of failure of the normal electrical supply, the supply to the alarmsystem, intercom system, car lighting, and the ventilation fan shall beautomatically witched to an emergency battery operated power supply (UPS).

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The Battery shall be of Sealed Maintenance Free Type with total capacitysufficient to maintain the Operation of above equipment for at least two hours.

g. All hoist way and car top safety switches shall be rated to IP Class 65.

h. All wiring and apparatus shall be subject to acceptance and suitable for thespecified electrical supply. The insulation of all wiring except those within thecontroller shall be of flame retardant, low smoke type complying with thespecial cable requirement of this Specification.

i. All field wiring shall be of multi-strand copper conductor type. No joints shallbe permitted in any cables or wires in any location.

j. The arrangements of terminals at either end of flexible trailing cables shall beidentical and the terminal blocks marked to identify the cables connected tothem.

k. The cable boxes and wiring for the car light and the alarm bell shall be entirelyindependent of the Lift control wiring. Flexible trailing cables shall conform tothe latest edition of BS 6977 as a minimum requirement and shall be securelyclamped at each end so that the weight is not supported by any fixing of thevarious cores. The outer sheath of these cables shall be of waterproof and flameretardant material. A total of 10 or 10% of the total number of wires usedwhichever is more and 2 spare shield cables shall be provided per Lift.

4.18 Safety features

The following safety features shall be made available to add safety, security andpassenger comfort

a. Automatic Rescue Device - battery drive

This feature is intended to move automatically the car to the nearest floor whenthe car has stopped between floors because of a failure of power supply. AutomaticRescue Devices shall bring the lift safely to the nearest landing and open the doorstill power supply is restored. However a provision for manually operating the inputshaft shall be also made available so that car can be brought to the next level undercontingency situations.

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b. Voice Announcer & Speaker

This feature within the control panel enables a automatic voice to informpassengers of floor arrivals and car departures.

c. Automatic Bypass

When the load in a Car reaches to 80% or more of the rated capacity, the car willbypass automatically all the Hall Calls along the service direction. This feature iseffective under full automatic mode without attendant service. When the car stopsat a floor to answer a call, this feature will get cancelled.

d. Emergency Operation of Lift in the event of fire

In the Event of fire, when any fire detection Device is activated, lift shall beautomatically brought to the Evacuation Door (Ground Floor). When Car arrives atthe Evacuation Floor (Ground level), the car will wait with Door Open.

e. Overload Holding Stop

When the car load exceeds the pre-determined weight, in addition to the overloadbuzzer, the Lift shall not operate and the doors shall remain open.

f. Electronic Door Safety

When passengers are boarding or exiting the car as the doors are closing, the doorsshall re-open before touching the passengers.

g. Home Landing Facility

This function shall automatically home the lift to the pre-assigned floors. Aftertransporting passengers to the assigned floor, the Lift shall automatically home toits pre-assigned floor.

h. Load Non stop

When the car load exceeds a predetermined limit, the lift shall not respond to hallcalls.

i. Auto Fan Off

In case no calls are registered for a pre-set time, the cabin fan shall be automaticallyswitched off.

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Chapter 5 ERECTION, TESTING AND COMMISSIONING

5.1 The scope of work of the contractor covered under erection, testing andcommissioning shall be as follows:

1. Receipt and unloading of the material/ equipment at site with their ownarrangement.

2. Unloading at erection site, unpacking of packages and listing of damaged /shortsupply items if any.

3. Filling/ applying initial fill of lubricants and oil after cleaning with cleaningfluid.

4. Erection, painting, testing and commissioning of the elevator complete with allstructural mechanical and electrical equipment.

5. Earthing of various electrical equipment.

5.2 Obligations of the Purchaser

Test loads shall be supplied by the IPRC.

5.3 Erection

5.3.1 Erection work involves installation of all elevator components in their identified

place of installation.

5.3.2 The Contractor shall carry out the erection and commissioning of complete liftalong with all mechanical, electrical and structural components.

5.3.3 All scaffolding works for installation of elevator shall be carried out by theContractor. Scaffolding materials shall also be arranged by them.

5.3.4 Any packing/ shims required to provided for proper alignment of guide rails,pulleys, drive frame etc. shall be provided by the Contractor.

5.3.5 No permanent bolting or welding shall be done until proper alignment has beenmade.

5.3.6 All erection and installation work shall be carried out strictly as per the relevantcode of practice and manufacturer’s instruction manuals, within the requiredaccuracy.

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5.3.7 Necessary adjustment to the structure, guides, insert plates etc. of the lift well, ifrequired shall be carried out by the contractor for satisfactory installationand operation of the lift.

5.3.8 Any modification, rectification or repair to members or equipments which havebeen damaged during transit, storage and handling shall be made good by thecontractor, free of cost, to ensure proper assembly and functioning of theequipment.

5.3.9 All site welds with the lift well structure shall be carried out carefully by onlyqualified welders so as not to damage the parent structure specially the loadbearing members. Electrodes of approved quality and specification shall only beused.

Chapter 6 PERFORMANCE TESTS & GUARANTEE

6.1 The elevators shall be guaranteed for a period of 12 months from the date ofsuccessful commissioning and taking over of the lifts by IPRC.

6.2 After erection and commissioning of equipment, performance tests shall becarried out to prove the performance of the system and equipment.

These tests shall be binding on both the part of the contractor to

determine compliance of the equipment/system with the performance

guarantee.

All the instrumentation for the performance tests, as required, shall be

supplied by the Successful Tenderer and shall be retained by him till the

satisfactory conclusion of all tests at site. All costs associated with the

supply, calibration, installation and return of test instruments shall be

included in the scope of supply. All test instruments shall be as per

standards approved by Purchaser.

The guaranteed performance figure of the equipment as per the

specification shall be proved by the Successful Tenderer during the

performance tests.

If the Successful Tenderer fails to achieve the guarantees, he shall

investigate the causes and shall rectify and/or replace, free of cost to the

Purchaser the defects of the equipment / system within a period of 1

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(one) months from the date of commencement of performance and

guarantee tests and against prove the guarantees. In such cases, the cost of

modifications including labor, materials and cost of additional testing etc.

shall be borne by the Successful Tenderer.

If even after necessary alteration and modifications, the performance

guarantees are not fulfilled, the Purchaser reserves the right to reject the

equipment.

In the event of exercising this right the Successful Tenderer shall replace

the defective equipment / system with the equipment / system that meets

the performance guarantee requirements. The cost of replacement

inclusive of labor, materials and repeat testing to prove compliance with

the performance guarantees shall be borne by the Successful Tenderer.

6.3 The following basic performance parameter tests shall be conducted in addition

to/part of tests mentioned in clause 3.19:

a) All equipment shall operate at rated capacity without undue vibration

and undue noise etc.

b) Measurement of noise and vibration levels.

c) Measurement of power consumption of various drive motors while

operating at performance guarantee levels.

d) Continuous run system performance test.

e) All other parameters of the equipment or system indicated in the

specification.

7.0 DELIVERY SCHEDULE

7.1 The overall completion schedule for supply, erection, testing & commissioning

of the elevators shall be (180 days) from the date of placement of order.

Tenderer shall submit a time bar chart along with the tender indicating starting

and completion dates, schedule of erection, commissioning & testing of the

elevator.

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Table 2

S. No. Description of activitiesEstimated time

indicative1 Submission of documents to department 20 days2 Approval of the above documents by the department 10 days3 Pre-fabrication

a. Procurement of materialsb. Pre-fabrication at party’s site

90 days

4 Inspection, verification of test certificates & pre-dispatchclearance by department

5 days

5 Transportation of pre-fabricated items to IPRC 15 daysAt IPRC :-

6 Erection at IPRC 30 days

7 Commissioning, testing & submission of execution reports 10 days

TOTAL 180 days

7.2 Timely completion is the essence of this work. The tenderer must satisfy himself

about his ability for completing the work as per delivery schedule, before

submitting his offer. Party can submit the detailed delivery schedule along with

quotation in the above format.