COMPREHENSIVE MAINTENANCE OF CENTRAL AC, PACKAGE AND VRF PLANTS INSTALLATIONS INSIDE FORT WILLIAM UNDER GE FW KOLKATA

Amount

NOTES :(i)The bidders/contractors are advised to read tender document & all corrigendum/ amendments and General conditions of contracts before entry/quoting the rates. (ii) It is highlighted that the cretin condition of General Condition Of Contracts (IAFW-2249) has been modified as direction of MOD i.e inclusion of performance security, deletion of risk & cost provisions and increase in defects liability period all as specified in tender document. The tenderers should keep in mind while quoting their offer

Material & Labour for vacuuming complete system of central air conditioning plant with double stage vacuum pump of (-) 2Kg/cm² vacuum pressure after repairs to compressor or repair in refrigeration system, charging the dry nitrogen gas and hold up to 24 hrs and rectifing the leackage if any by repairing the "O" ring and gland packing of service valve/ Oil seal, pressure testing and vaccumising complete system with double stage vaccum pump to below atmospheric preesure 28 to 30 mm/HG including top up the compressor oil and charging the refrigerant gas (R-22) at various plant all as specified and directed by Eng-in-charge. Note :- (a) Referigerant Gas R-22, Nitrogen gas and compressor oil will be measured and paid separately under relevant Items. (b) Once charged the R - 22 gas, it should hold in the system minimum six month, if the gas leaked from the system the contractor has to charged gas at his own cost.

Central type AC Plant at Signal Centre(3x45TR)

Central type AC Plant at Auditorium (2x61TR)

Material & Labour for De- scaling the shell and tube condensor by circuilating de-scaling chemical through for 2 to 3 hours. Opening the end cover of condensor and cleaning inner tubes manually with the help of nylon / wire brush until complete scale to be removed and flush out with fresh water. Reassembling the end cover including replacement of gasket, bolts, nuts etc as required and commissioning complete all as directed by Eng-in-charge. Note:- De-Scaling of all Condensors mentionoed in AC Plants as mentioned below is to be done twice in year respectively and rate to be quoted accordingly by the Contractor

Central type AC Plant at Signal Centre(3x45TR)

Central type AC Plant at Auditorium (2x61TR)

Isolating the reciprocating compressor by loosing/ cutting nuts and bolts at suction and discharge valve opening of compressor, removing the unservicable/ damaged internal parts, cleaning, overhauling complete, replacement of wornout parts such as suction reeds, discharge reeds, safety valve, loading/ unloading mechanism, piston, rings, springs, washers, nuts and blots, gasket set, shaft seal, 'O' ring set, recharging compressor oil and refrigerant after pressure test and vaccum test. Testing and commissioning complete all as directed by Eng-in-charge for compressor. Note:- Spare parts will be easured and paid separately under respective item as "Supply only"

Central type AC Plant at Signal Centre(3x45TR)

Central type AC Plant at Auditorium (2x61TR)

Supply only spares of compressor of OEM make to incorporate against item no 3 & 4 above :-

Piston Ring

Cylinder liner

Oil strainer

Safety valve assembly

Crank Shaft seal with assembly

Connecting rod

Neoprene 'O' ring with aluminium washer

Piston pin

Suction valve ring plate including reeds

Discharge valve ring plate including reeds

Main bearing bush (Bushing with detachable collar)

Piston

Suspension rod (Single frame for unloading)

Rocker arm for unloading mechanism

Valve spring

Spring for unloading ring

Discharge valve assembly

C.R. bearing u/size

Suction strainer

Gear wheel for oil pump (driving)

Gear wheel for oil pump (driven)

Reconditioning of crank shaft retrieved from item No 41 & 4.2 by cutting / turning for under size at lathe work complete all as directed.

Supply and fixing loading unloading valve including necessary wiring and copper pipe line of suitable size and length complete all as pecified and directed.

Supply and fixing in repair togal switch one way 5 Amps. Capacity complete all as specified and directed

Dismantling and taking up unserviceable electric motors of any size/ capacity from foundations after disconnecting electric connections and transportation from site to work shop for carrying out repairs / rewinding of motors as required incluidng re-fixing in position and connecting and testing complete all as directed.

Opening up short circuited electric induction motor, 3 phase AC 440 Volts, cutting and removing the burnt stator winding coils complete and re-winding the same with super enamelled copper conductor wires of appropriate size as per the existing gauge and weight including cleaning of slots, all necessary insulating materials, varnishing, dryining complete all as specified and directed at site for the following capacity :-

1 HP to 2 HP

3 HP to 5 HP

7.5 HP to 12.5 HP

15 HP to 25 HP

50 HP to 60 HP

Supply and fixing terminal connector for motors of the following capacity :-

1 HP to 2 HP

3 HP to 5 HP

7.5 HP to 12.5 HP

15 HP to 25 HP

50 HP to 60 HP

Supply and fixing PVC fan blade for motors of the following capacity :-

1 HP to 2 HP

3 HP to 5 HP

7.5 HP to 12.5 HP

15 HP to 25 HP

50 HP to 60 HP

Repairs to squirrel cage induction motor shaft by welding / grinding, polishing to required sizes for motors of the following capacity :-

1 HP to 2 HP

3 HP to 5 HP

7.5 HP to 12.5 HP

15 HP to 25 HP

50 HP to 60 HP

Replacement of pump end ball bearing suitable for following capacity :-

1 HP to 2 HP

3 HP to 5 HP

7.5 HP to 12.5 HP

15 HP to 25 HP

50 HP to 60 HP

Carrying out repair to Centrifugal pump after dismantling the assembly complete for replacement of worn out spares such as impellers, pump shaft, sleeves, bushes etc; including filling, turning & polishing works to pump shaft, GM impellers as necessiated, reassembling the pump after repairs and testing complete including applying a coat of water proof epoxy paint to the external surfaces of pump all as specified and directed of following capacity :- Note : Any spares requires to be replaced will be measured and paid separately under respective item as "Supply" only.

7.5 HP to 12.5 HP

15 HP to 25 HP

Supply only GM impellers for Centrifugal pump with key and bushes suitable for :-

7.5 HP to 12.5 HP

15 HP to 25 HP

Supply only Pump Shaft steel for Centrifugal pump key and bushes suitable for :-

7.5 HP to 12.5 HP

15 HP to 25 HP

Supply only Bearing & bush for Centrifugal pump with key and bushes suitable for :-

7.5 HP to 12.5 HP

15 HP to 25 HP

Supply and fixing Motor coupler sleeve with key suitable for Centrifugal pump sets of existing make/capacity complete all as directed.

Supply and fixing in repair for Direct Online Starter, 6 HP capacity with voltmeter/ Ammeter and Indication lamp for Centrifugal pump set, 3 phase 440 volt complete with over load protection with adjustable relay range, electronic timer relay and provision of MS flat strips of suitable size and shape duly drilled and embedded to wall including making good disturbed surfaces complete all as specified.

Supply and fixing in repair for fully automatic star delta starter, 15 HP capacity with voltmeter/ Ammeter and Indication lamp for Centrifugal pump set, 3 phase 440 volt complete with over load protection with adjustable relay range, electronic timer relay, single phase protection relay and provision of MS flat strips of suitable size and shape duly drilled and embedded to wall including making good disturbed surfaces complete all as specified.

All as per item No 21 here-in-above but 25 HP capacity

Supply and fixing PVC insulated and sheathed submersible copper cable, 3 core, with multi-stranded copper conductor of 1100 volts grade and size 10 sq mm including taking down old / unserviceable cable complete all as directed by Engineer-in-Charge.

Supply only refrigerant gas (R-22) to refrigeration and A/C system complete all as specified and directed

Supply only compressor oil N-68 complete all asspecified and directed .

Draining/Taking out unsv compressor oil 160 P and charging with new compressor oil complete all as directed

Supply & Fixing in repair Copper Refrigerant tube of 1/2" Outer Dia minimum 1mm thick for condensor of AC Plants complete all as specified and directed

Supply only nitrogen gas for leak testing of central A/C plant system complete all as directed.

Supply and fixing in repair pressure gauge 4"dia suitable for refrigerent gas ( R-22) and compressor oil including copper pipe of suitable dia and length (Min 2m Long) with flair nuts/adopter at both ends,range of gauge (-)30 to 300 Psi complete all as specified and directed

Material & Labour for replacement of wornout / unserviceable "V" belt for power transmission of following sizes :-

Supply and fixing in repair unservicable control cutouts of central type A/c plants and testing complete as directed by Engineer-in-Charge.

(a) Oil Pressure cutout MP-55

(b) High pressure cutout MP-1

(c) Low pressure cutout MP-5

Supply and fixing in repair thermometer to condenser / chiller inlet or outlet pipe including addition alteration to pipe line for fixing thermometer Range 0 F to 100 F complete all as specified and directed

Supply and fixing in repair pressure relief valve of condensor 3/8" BSP threaded suitable for 300 PSI complete all as specified and directed

Supply and fixing in repair following worn out HRC fuses:-

Supply and fixing in repair AHU filter of various sizes made of wire mesh for air filteration upto 15 microns complete all as specified and directed.

Supply and fixing in repair wornout strip type heaters of capacity 1.5 KW suitable for AHU of central AC plant of any capacity complete all as specified and directed.

All as per item No 36 here-in-above but of capacity 3.0 KW

Supply and fixing in repair moulded fuse holder and fuse base for 415V AC supply 32 Amps capacity bakelite type

All as per item No 38 here-in-above but 63 Amps capacity

Supply and fixing in repair single phase preventer in electric panel board at central type AC plants complete all as per direction of Eng-in-charge.

Supply and fixing in repair power contactor 3 pole, coil voltage 230/415 Volts for following capacity motors:-

Supply and fixing in repair bimetal over load relay of following ranges:-

Supply and fixing MCCB 100Amps ,415 volt, AC 50 Hz, 4 pole, 50 KA with thermal magnetic release, adjustable Over load and short circuit settings including taking out old unserviceable MCCB complete all as specified and directed.

All as per Item No 43 here-in-before but 63 Amps capacity

Digital LED Panel Meter 3Ph, 4W IPM 240 V (L-N) 1 A Class 1 FM suitable for measuring Alternating Voltage , Alternating Current , KW ,KVA , PF.

CT's of suitable ratio for LT 3 phase system, 1.1 kv grade, single burden, general purpose, of CT ratio as per site requirement.

LED Indicator Lamps for each phases including holders and of colours red / yellow / blue etc.

Electric Timer Switch of starter 240 /360 / 415 v, 50 Hz

MCB FP 32 Amps , C Curve

Supply & fixing in repair Push button assembly in green or red colour complete all as directed by Eng-in-charge.

Supply & fixing in repair add-on block with 2NO - 2NC contacts complete all as directed by Eng-in-charge.

Servicing of cooling tower of Central AC plant by draining water, cleaning the tank by costic soda, repairing of sprinklers, replacement of frills, repairing the bracket for fixing the frills to CT of any capacity. Repairing / cleaning the FRP cooling tower of capacity upto 20 ton , top / side covers , removing the fan motor assembly , over hauling the fan motor , taking down the sprinkler , water main header pipe , PVC frills (Honeyconub) , cleaning throughly incl replacing the bearing of fan, and reassembled in all respect for smooth functioning Note :- (a) Cooling tower frills, sprinklers & Fill Pack Sheet will be measured and paid separately under relevant items. (b) Cost of costic soda shall be included in quoted rate. (c) Rewinding of fan motor if any shall be paid against item No 10 here-in-before

Central type AC plant at Signal Centre(3x45 TR)

Central type AC Plant at Auditorium (2X61TR)

Supply only PVC frills made out of PVC materials including fixing arrangements complete all as shown & directed by Engineer-in-Charge.

Supply only sprinkler suitable for cooling tower for 61TR capacity complete all as directed by Eng-in-charge.

Supply only Fill Pack Sheet in cooling tower of existing make shape and size complete all as specified and directed

Material and labour for Glowsign board (30 sqft) made of angle iron frame work of 50x50x6mm with front side covered with 2mm thick acrylic sheet for writing letters in appropriate font size and backside covered with 2mm thick G I sheet, duly prewired and including 8 Nos Tube light set(LED type) of 18 watts inside the board incl connection electrically and fixed to the iron frame incl necessary fixing arrangement such as angle iron , flat iron and Chanells complete all as specified and directed by Engr-in Charge . Note:- Data to be written on Glow Sign Board will be given by Engr-in-Charge and Measurement of Angle iron, Channels, Flat iron and other iron work will be measured and paid under respective item.

Supply and fixing sluice valve Cast iron body , class PN-1.0,with both ends flanged drilled suitable for 150 mm dia ISI marked having brass spindle & check nut, CI operating wheel including taking down old unserviceable sluice valve complete all as specified and directed.

All as per item No. 53 above but of size 100 mm bore

All as per item No. 53 above but of size 80 mm bore

Supply and fixing 50 mm bore dia Gun metal globe or gate valves with iron wheel head, screwed both ends for iron pipe and fixed in repairs complete including dismantling and removing old unserviceable valves any type complete all as specified and directed .

All as per item No. 56 above but of size 25 mm bore

All as per item No. 56 above but of size 20 mm bore

Supply and Laying GI Pipe 150 mm bore medium grade including all fittings laid in trenches including taking out unserviceable GI pipe complete all as specified and as directed

All as per item No. 59 here in before but 100 mm bore

All as per item No. 59 here in before but 80 mm bore

All as per item No. 59 here in before but 50mm bore

All as per item No. 59 here in before but 25 mm bore

All as per item No. 59 here in before but 20 mm bore

Material & Labour for Painting to GI pipe line 150/100/80 mm dia for Condensor Water Pump to Cooling Tower and vice versa as per existing colors code with all supporting materials with one coat of synthetic enamel paint from ground level to bottom of the dome of the make up tank complete all as directed. Note :- Special type of tools & tackles, swings, scaffolding and safety accessories etc required for the work shall be arranged by the contractor and rate quoted shall deemed to be included for the same.

Material & Labour for Painting to ,compressor , condensor , compressor motor , Condensor Water Pump , AHU motor and Cooling Tower and vice versa as per existing colors code with all supporting materials with one coat of synthetic enamel paint from ground level to bottom of the dome complete all as specified and directed(Auditorium 2X61TR) Note :- Special type of tools & tackles, swings, scaffolding and safety accessories etc required for the work shall be arranged by the contractor and rate quoted shall deemed to include for the same.

Material & Labour for Painting to ,compressor , condensor , compressor motor , Condensor Water Pump , AHU motor and Cooling Tower-02Nos and vice versa as per existing colors code with all supporting materials with one coat of synthetic enamel paint from ground level to bottom of the dome complete all as specified and directed (Signal Centre 3X45 TR) Note :- Special type of tools & tackles, swings, scaffolding and safety accessories etc required for the work shall be arranged by the contractor and rate quoted shall deemed to include for the same.

Material and labour including fabrication of joist, channel, angle or tee sections fixed independently without connecting plates etc conforming to FE 410 W Gde E-250, quality - 'A' including two coats of synthetic enamel paint over a coat of red oxide primer after preparation of steel surface complete all as specified and directed.

Supply and fix in repair butter fly valve of dia 100mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket ,nut,bolts washer all as specified by Engr-in- charge

All as per item No 69 here-in-before but 150 mm dia

Supply and fix in repair NRV of dia 80 mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket ,nut,bolts washer all as specified by Engr-in- charge

All as per item No 71 here-in-before but 10 mm dia

Material & Labour for Opening of short circuited DIDW Centrifugal Blower motor 4000 cfm , cutting and removing the burnt stator winding coils complete and re-winding the same with super enamelled copper conductor wires of appropriate gauge and quantity as per the existing one including cleaning of slots, all necessary insulating materials, varnishing, dryining complete and refixing the same complete all as specified and directed.

All as per item No 73 here-in-before but for DIDW Centrifugal Blower motor 1500 cfm

Day to day, comprehensive, routine, periodical maintenance including supply of all consumable lubricants and reqpir or replacement of all components (spare parts) which may occur due to wear and tear except part are specified in relevant items of BOQ her-in-after for entire package air condition unit 1x8.5 TR at North Barrack Engr Branch including clening entire installation and daily maintenance of necessary records & documents complete all as specified and directed Make of Air Condition Unit :- Blue Star

Day to day, comprehensive, routine, periodical maintenance including supply of all consumable lubricants and reqpir or replacement of all components (spare parts) which may occur due to ear and tear except part are specified in relevant items of BOQ her-in-after for entire package air condition unit 3x11 TR at P-1 Bldg including clening entire installation and daily maintenance of necessary records & documents complete all as specified and directed. Make of Air Condition Unit :- Blue Star

Day to day comprehensive , routine, periodical maintenance including supply of consumable of the following VRF/Ductable AC units Model No. IVRFB28TC – 28H, Cap. 28 HP- 02 Nos with all connected pipe line outdoor & indoor units , copper tubes, drain line , electric connecting etc complete system as per direction of Original Equipments Manufacturer(OEM) including repair / replacement of spares parts accessories as per original at site for functioning of VRF/ Ductable AC plant to run the system with full efficiency without breakdown including cleaning entire installation area and daily maintenance of necessary records & documents complete all as specified and directed. Make of Air Condition Unit :- Blue Star Note:- (a)The cost of material & repaired charges for complete one month shall be deem to included in above quoted rate for entire above installations. Accordingly bidder/ tenderer is advised to visit site before quoting his offer and nothing will be paid on this account. (b) The contractor shall submit the Memorandum of Understanding (MOU) on stamp paper duly notarized with Original Equipments Manufactures (OEM) as applicable as per specification to the effect at maintenance shall be carried out under OEM overall supervision and direction/ instruction within 15 days of acceptance of tender, failing which the contract will be liable to be cancelled under condition 54 of IAFW-2249.

Notes for item No 75 to 77:- (a) The contractor shall provide of high skilled mechanic/Special engineer required for fault during currency of contract period if required. The cost of the same shall be deem to be included above quoted rate (b) .In case new mechanic/operator joint during currency of contract period, the OEM or their accredited/authorised agencies shall be training to new mechanic. (c) Comprehensive maintenance include day to day routine/periodical maintenance with replacement of defective equipments/ parts as specified shall deem to be included in above quoted rate. (d) All equipments under contract will be serviced 4 times during summer, winter and monsoon in the contract period as per standard checklist and out of four ,once of the compressive maintenance and testing shall be carried out during of April so that during summer all equipment to be trouble free and working smoothly. The next service will be rendered in the quarter after the summer season. (e) Contractor shall rectify the fault within 24 hours as per direction of AGE E/M or his rep within design limit as specified in PS otherwise shall be recovery will be 5% of the quoted amount of each item (f) Make and model of part to be replaced shall be same as existing at site or as per OEM recommendation. (g) Contractor shall maintain the temp of AC Plant as per the direction of GE/AGE/user or his rep within design limit. (h) During the entire contract period any defective components to be repair/replace to make plant/machinery fully functional. The cost of the same is deemed included in quoted rates, no extra cost shall be paid to the contractor in this effect. (j) Make and model of part to be replaced shall be same as existing at site or as per OEM recommendation. (k) The cost of transportation and other necessary equipments shall be arranged/brought by contractor in this effect (l) Make and model of part to be replaced shall be same as existing at site or as per OEM recommendation. (m) All labour charges for taking out old spares/items and replacing spares, testing, commissioning, transportation etc shall be deemed to be included in the above quoted rates. In case any experts technical /Engineer require for major faults of plants shall be provided by the contractor without any extra cost of the department. (n) The compressor shall be checked for its proper functioning and if any defect is found the same will be reapired / replaced by the contractor. (o) Safety controls such as pressure cut outs shall be tested or proper functioning and in case of any malfunctioning they will be either repaired or replaced accordingly by the contractor. (p) Condenser Coil & Evaporator coil.(Cooling coil ) shall be inspected and cleaned, if necessary and for any defect found , the same shall be repaired by contractor. (q) All labour charges for taking out old spares / item and relating spares, testing, commissioning, transportation etc shall be deemed to be included in the above quoted rates.

(r) Repairs to refrigerant piping/ducting line due to system problems shall be repaired by contractor. (s) The PCBs of the IDU and ODU will be checked for its proper functioning and if any defect found, the same shall be rectified/replaced and shall be repaired by contractor. (t) Refrigerant gas shall be topped up in the system as and when necessary by the contractor. (u) Two Engineer shall be deputed at site on official working hour as directed by AGE (v) The cost of transportation and other necessary equipment shall be arranged/brought by the contractor in this effect , hence the bidder/tenderer is advised to visit the site and assess the quantum of the work to be carried out in the contract and quoted there rate accordingly

Material and labour for taking down of water purifier and servicing including cleaning of water filters as recommended by OEM and , cleaning of parts with suitable chemicals, replacement of defective spare if any with new spare and refixing the same in the existing location or any where as directed by Engr-in-Charge complete all as specified and as directed. Make- Aquaguard Geneous Note:- (a) Necessary T&P required for repairing the above item is to be arranged by the Contactor and if any damage done to the equipment is to be rectified by the contactor without any cost . Nut Bolts & washers if found unserviceable to be replaced by the Contactor. (b) New spare parts to be measured and paid under respective item as "Supply only"

Supply only PCB kit suitable for Water Purifier of Make-Aquaguard geneous complete all as specified and as directed.

Supply only Service Valve for Water Purifier of Make-Aquaguard geneous complete all as specified and as directed.

Supply only Power Adopter suitable for Water Purifier of Make-Aquaguard geneous complete all as specified and as directed.

Supply only Ultraviolet RO Membrane Filter suitable for Water Purifier of Make-Aquaguard geneous complete all as specified and as directed.

Supply only Sedimentation Filter suitable for Water Purifier of Make-Aquaguard geneous complete all as specified and as directed.

Supply only ChemiBlock Filter suitable for Water Purifier of make-Aquaguard geneous complete all as specified and as directed.

Note: Schedule of credit (SCHEDULE OF CREDIT) amount of Rs ₹ ___________ mentioned on Page No ____ shall be deducted from the total quoted amount of BOQ.

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