COMPREHENSIVE MAINTENANCE OF AIR CONDITIONER PLANT MLH E AND IRS 101 BLOCK JIG BORING AND CRS AT AF STATION CHAKERI KANPUR

Amount

One Time inspection & servicing of the complete central AC plant of capacity 3x78 TR Voltas Make Chiller unit Model No -ACEGWFXR0801MLB2S -03 Nos at MLH along with all equipment, electric connections to inspect the operation of plant by the rep of Authentic agency/(Specilized agency having experience of minimum 5 year to execute similar nature of work) and carrying out preventive maintenance as per standard practice including replacement of defective component / equipment under the respective item of schedule to maintain & keep the central AC plant functional regularly complete all as specified and directed. (i)Inspecting the plant / system and carry out preventive maintenance as per the standard practice one time during contract period or as required at site as directed by Engineer in Charge. (ii) Checking the refrigeration system, motor and starters and ensuring healthy condition of the plant. (iii) Checking the system for any leaks and rectifying the leakage by breezing of copper rod & oxygen flame, vaccuming the system after rectification of leakage, charging nitrozen and holding the pressure not less than 24 hrs or as specified and directed by Engr-in-charge. (iv) Taking set of readings and Reporting the healthiness of the plant and suggesting improvements if any. (v) Checking the Refrigeration control system for operation and adjusting the settings. (vii) Checking the functioning of compressor and its accessories. (viii) Cleaning the evaporator once a year . (ix) Lubricating the bearings of motors, fans when found necessary. (x) Quarterly inspection of belts adjusting the tension. (xi) Checking of the microprocessor controller for its proper functioning with all sensors. (xii) Attending to breakdown calls. (xiii) Labour involving evacuation of refrigerant during replacement of controls and replacement of compressor. (xiv) arrying out one time during contract period testing of lubricant and water (chilled water system and water condensing systems only) samples. Note: Inspection & servicing the complete airconditioning plant as above briefed in the Ser no:(i) to(xiv) is executed at site by the contractor in one time only within three month after issue of contract work order.

All as per item No 1.00 above but 3x50 TR AC plant at CRS Make: Voltas complete all as specified and directed. Note: Inspection & servicing the complete airconditioning plant as above briefed in the Ser no:(i) to(xiv) is executed at site by the contractor in one time only within three month after issue of contract work order.

All as per item No 1.00 above but Voltas make 100 TR chiller unit Model No -ACEGWFXR1001MLB2S - 06 Nos installed at TTCLE hanger Front & Rear Annexe complete all as specified and directed. Note: Inspection & servicing the complete airconditioning plant as above briefed in the Ser no: (i) to (xiv) is executed at site by the contractor in one time only within three month after issue of contract work order.

All as per item No 1.00 above but central AC plant of capacity 4x100 TR at 101 block Make Blue star complete all as specified and directed. Note: Inspection & servicing the complete airconditioning plant as above briefed in the Ser No. (i) to (xiv) is executed at site by the contractor in one time only within three month after issue of contract work order.

All as per item No 1.00 above but Blue Star Make 25TR Chiller unit Model No -XWC2S-026AR2 -02 Nos at E& IRS complete all as specified and directed. Note: Inspection & servicing the complete airconditioning plant as above briefed in the Ser No (i) to (xiv) is executed at site by the contractor in one time only within three month after issue of contract work order. Note for serial item No 1.00 to 5.00:- (i) The rates quoted shall also include the attending of emergency breakdowns in AC plants. If such emergency breakdowns are not attended in time, following compensation shall be levied from the contractor's dues: (a) Attending breakdown within 72 hours - Rs Nils (b) Attending breakdown within 3 to 7 days - Rs 10000 per breakdown. (c) Attending breakdown after 7 days - Rs 25000 per breakdown. (iii) Spare parts required shall be measured & paid separately under relevant items of BOQ based on their consumption on ground.

Supply, installation, testing & commissioning following Spare in replacement for running of the plants of capacity as per serial No 1.00 to 5.00:- PLC Controller

Temp sensor

Pressure Transducer

Expansion Valve

Pressure difference switch

Pressure relief valve

Filter drier

Oil Transducer

Solenoid valve coil

Crank case Heater

Motor Protection Device

Transformer of chiller unit

Voltage protection relay

Microprocessor

Supply and Fix in replacement of dry filter 1/2" complete all as specified and directed.

Supply and Fix in replacement of optical oil level switch complete all as specified and directed.

Supply and Fix in replacement of oil filter as per sample complete all as specified and directed.

Supply and Fix in replacement of outer gasket- oil filter RE-550 as per sample complete all as specified and directed.

Supply, filling / top up of compressor oil SOLEST-120 suitable for AC plant of any cap including Cleaning of oil chamber of AC Plant complete all as specified and directed.

Supply and Fixing of Discharge Pressure switch as per existing make and model complete all as specified and directed.

Supply and Fixing of Suction pressure switch as per existing make and model complete all as specified and directed.

M&L for taking out all old US sprinkle hub assy with blade & Supply & Fix in replacement of metal casting sprinkler hub assy with blade for cooling tower of cap up to 200 TR complete all as specified and directed.

Supply and Fix in replacement of Flow Switch as per existing make and model all as specified and directed.

Supply and Fix in replacement NRV valve of 50mm dia, cast iron body, wafer type integrally molded close and body construction with hand lever operated and rating of PN - 10 with thermal insulation as per requirement of chilled water line complete all as specified and directed. Make: Advance/Castle/Intervalve/SAAPL or equivalent as per Appx 'B' of Particular Specifications.

Supply and Fix in replacement NRV valve of 100mm dia, cast iron body, wafer type integrally molded close and body construction with hand lever operated and rating of PN - 10 with thermal insulation as per requirement of chilled water line complete all as specified and directed. Make: Advance/Castle/Intervalve/SAAPL or equivalent as per Appx 'B' of Particular Specifications.

Supply and fix in replacement of V belt suitable for AHU complete all as specified and directed.

Servicing of cooling coils and air filter of AHUs installed at air conditioning plant by removing air filters and fixing back after cleaning with air blower, water and cleaning agent, cleaning of cooling coil with wire brush and air blower and water spray pump after spraying scal gun AL or equivalent chemical suitable for aluminum fins and straightening the fins of cooling coil using suitable brush, cleaning of bottom tray, drain pipe complete one coat of painting with synthetic enamel paint after rubbing of existing surface and applying one coat of primer inside and outside complete all as per directed by Engr-in-Charge.

M&L for disconnecting electric connection & dismentling of electric motor upto 10 HP for rewinding of electric motor (Burnt stator) of any make & type of Compressor/pump/ AHU/ blower/CT fan motor of with suitable gauge of super enameled copper conductor including winding with fiber cloth/PVC insulated winding paper, superior quality varnishing, servicing of ball bearing, suitable main connections from coil to terminal box including M&L for disconnecting US burnt motor from the existing location, transporting to workshop and opening of motor, cutting/removing old burnt winding coils, cleaning/filing the starter slots, necessary mechanical works for shaft/bearing housing, preparing and inserting coils running/starting winding, interconnecting, fixing, soldering, jointing, heating, drying up coils, connection at site, to and from transportation, testing at site, replacing new connection terminal plate of following sizes satisfactorily running complete all as specified & directed

All as per item 20.00 above but Electric 15 HP.

All as per item No 20.00 above but Electric 20 HP.

Repair and Maintenance of Centrifugal / Monoblock pump sets of capacity up to 5 HP capacities installed at various AC plants by opening, checking for faults, filling of new graphite gland packing, fixing and replacement of unserviceable parts and reassembling after repair and testing complete of following capacities of pumps sets complete complete all as specified and directed.

All as per item No 23.00 above but Pump of capacity 10 HP.

All as per item No 23.00 above but Pump of capacity 15 HP.

Supply and Fix in replacement strip heater of capacity 3 KW, AC single phase heater bank 36 KW for winter heating including taking out old unserviceable strip heater complete complete all as specified and directed.

Supply and Fix in replacement MCB 6 Amps, SP and breaking capacity 10 KA complete all as specified and directed.

Supply and Fix in replacement MCB 40 Amps TP and breaking capacity 10 KA complete all as specified and directed.

Supply and Fix in replacement MCB 63 Amps TPN and breaking capacity 10 KA complete all as specified & directed.

Supply and Fix in replacement AC Control Power Contactor 3TF49 suitable for 100 TR compressor (110V-AC Coil Voltage) complete all as specified and directed.

Supply and Fix in replacement AC Control Power Contactor 3TF46 suitable for 50 TR compressor (110V-AC Coil Voltage) complete all as specified and directed.

Supply and Fix in replacement of power contractor MNX 32 with NO NC axuilary contactor of model MNX A2 or equivalent model complete all as specified and directed. Make: L&T / ABB / Siemens / C&S or equivalent as per Appx 'B' of Particular Specifications.

Supply and Fix in replacement of power contractor MNX 25 with NO NC axuilary contactor of model MNX A2 or equivalent model complete all as specified and directed. Make: L&T / ABB / Siemens / C&S or equivalent as per Appx 'B' of Particular Specifications.

Supply and Fix in replacement of power contractor MNX 18 with NO NC axuilary contactor of model MNX A2 or equivalent model complete all as specified and directed. Make: L&T / ABB / Siemens / C&S or equivalent as per Appx 'B' of Particular Specifications.

Supply and Fix in replacement of power contractor MNX 12 with NO NC axuilary contactor of model MNX A2 or equivalent model complete all as specified and directed. Make: L&T / ABB / Siemens / C&S or equivalent as per Appx 'B' of Particular Specifications.

Supply and Fix in replacement of pre-filters of exiting size complete all as specified and directed.

Supply and Fix in replacement of MCCB 800 Amps, TP+NL 50 KA, 415 volts 50 Hz including necessary connection for incoming/outgoing with lugs of suitable size complete all as specified and directed. Make: L&T / Legrand / CG / C&S / Schneider or equivalent as per Appx 'B' of Particular Specifications.

Supply and Fix in replacement of adjustable type MCCB 200 Amps TP, 36 KA, 415V, 50 Hz including necessary spreaders link for incoming/outgoing with lugs of suitable size complete all as specified and directed. Make: L&T / Legrand / CG / C&S / Schneider or equivalent as per Appx 'B' of Particular Specifications.

All as per item No 38.00 above but of 100 Amps TP 16 KA, 415 V, 50 Hz

Supply and Fix in replacement of 200 Amps connector suitable for LT panel complete all as specified and directed.

Supply and Fix in replacement of 100 Amps TPN isolator suitable for LT panel complete all as specified and directed.

Supply and Fix in replacement of kit kat fuse unit upto 100 Amps suitable for LT panel complete all as specified and directed.

Supply and Fix in replacement of electronc timer suitable for AC plant upto 100 TR complete all as specified and directed.

Supply and Fix in replacement of single phase preventer VSP complete all as specified and directed. Make:- Minilec / L&T / Legrand / Siemens or equivalent as per Appx 'B' of Particular Specifications.

Supply and Fix in replacement of ON/OFF Push switches complete all as specified and directed.

Supply and Fix in replacement of ammeter flush type 96X96 sqmm, 5A class 1 with suitable fixing arrangement and CT coil for easily fixing in existing LT panel including necessary wiring complete all as specified and as directed.

Supply and Fix in replacement of voltmeter flush type 96X96 sqmm with suitable fixing arrangement for easily fixing in existing LT panel including necessary wiring complete all as specified and as directed.

Supply and Fix in replacement of galvanized steel tubes medium grade (ISI marked) of size 15 mm including all fittings and testing complete all as specified and as directed. Make: Jindal / Tata / Prakash Surya or equivalent as per Appx 'B' of Particular Specifications.

All as per item No 48.00 above but of size 20 mm.

All as per item No 48.00 above but of size 50 mm.

Supply and Fix in replacement of Gun metal gate valves with iron wheel head screwed both ends for iron pipe of size 25 mm and fixed including testing complete all as specified and as directed. Make: Kartar / Zoloto / L&T /Upadhyay or equivalent as per Appx 'B' of Particular Specifications.

All as per item No 51.00 above but of size 40 mm.

Supply and Fix in replacement of 25/20 mm bore PTMT PVC float valve high pressure with polythene float and fly nut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified and as directed.

Supply, laying or fixing in replacement MS Pipes of sizes 50 mm dia heavy grade with all fittings laid in floors or fixed to walls and ceilings complete all as specified and as directed. Make: Jindal / Tata / Prakash Surya or equivalent as per Appx 'B' of Particular Specifications.

All as per item No 54.00 above but of size 80 mm.

All as per item No 54.00 above but of size 100 mm.

All as per item No 54.00 above but of size 150 mm.

Supply and Fix in replacement of 80 mm dia butterfly valve with nuts, bolts, washers and rubber packing etc. complete all as specified and as directed. Make: Castle / Advance/Castle/Intervalve/SAAPL or equivalent as per Appx 'B' of Particular Specifications.

All as per item No 58.00 above but of size 100 mm.

All as per item No 58.00 above but of size 150 mm.

Supply and Fix in replacement of 100 mm dia Non return Valve as per IS 5312 PN 1.6 including nuts, bolts, washers, gasket etc. complete all as specified and as directed. Make: Kartar / Zoloto / L&T / Upadhyay/Castle or equivalent as per Appx 'B' of Particular Specifications.

Supply and charging gas nitrogen in returnable cylinder (sealed) for leakage pressure test of AC Plant (Element of charging and destroying and flushing out of blockage elements from cooling coil/suction discharge line and entire cycle of refrigeration system is included in respect item of repair work.

Supply and charging of refrigerant gas R-22 in company sealed cylinder after making system leak proof complete all as specified and as directed. Make: Mafron / Freon / Refron or equivalent as per Appx 'B' of Particular Specifications.

Supply and charging of refrigerant gas R-134A in company sealed cylinder after making system leak proof complete all as specified and as directed. Make: Mafron / Freon / Refron or equivalent as per Appx 'B' of Particular Specifications.

Supply and charging of refrigerant gas R-407 in company sealed cylinder after making system leak proof complete all as specified and as directed. Make: Mafron / Freon / Refron or equivalent as per Appx 'B' of Particular Specifications.

Supplying and replacing new PVC fills into the cooling tower including taking out all old US PVC fills from cooling tower of capacity up to 200 TR complete all as specified and directed.

Supply and Fix in replacement of siphon (as per sample) in existing line including cutting and welding of new socket/adopter complete all as specified and as directed. Note:- Cost of new socket and welding work and making good to existing pipe is deemed to be included in unit rate quoted.

M&L to dismentle unserviceable compressor of make & model as given here after,disconnecting all electric connection carefully & pipings and then opening suction/discharge liquid line, gauge line etc including pumping down refrigerant gas to existing condensers / empty cylinder . Taking out old compressor oil in empty barrel & transporting compressor to contractor workshop for dismanteling and opening of compressors, checking each part of compressors i.e crank shaft, bearings, piston rings, suction/discharge reeds, guide assembly, oil pump assembly, shaft seal assembly for its servicieability,fixing/replacement of old serviceable/ New/Worn out part cleaning and polishing of all metalic parts, oil chambers, re-assembling of compressor,installation back on foundation connecting complete with existing system & making all electric & piping connection than testing of pressure by applying dry nitrogen, vaccum test and recharging of exsting of stored gas to the compressor and testing of unit complete all as specified and directed by engineer-in-charge at site Note: 1- Spare parts shall be measured and paid separately. 2. Grinding and polishing of shaft and Nitrogen leak testing will be measured and paid separately.

Supply & fix following Spare in replacement for Accel Sabro Model AC 4-65 Jig Boaring AC plant :-(a) Main bearing seal end

(b) Main bearing pump end

(c) Connecting rod assembly

(d) C R bearing

(e) Cylinder Sleeve

(f) Piston

(g) Oil pressure release valve

(h) Suction valve reed

(j) Oil filter assembly

(k) Piston ring set

(l) Aluminium washer set

(m) Gudgeon Pin

(n) Gudgeon pin Bush

(o) Discharge valve assembly

(p) Oil pump assembly

(q) Rocker for unloading mechanism

(r) Piston circlip

(s) 'O' Ring set with tefelon set

(t) Liner unloading Ring with Spring & Pin

(u) connecting rod nut & bolt

(v) Retaining spring

(w) Suction retaining plate

(x) Safety valve

(y) gasket set complete

(z) Thrust coller

(aa) Main service Valve

(ab) Discharge Service Valve

(ac) Suction Service Valve

Supply & fix following Spare in replacement for Blue star model JS-83F T-508 101 Block :- (a) Main bearing seal end

(b) Main bearing pump end

(c) Connecting rod assembly

(d) C R bearing

(e) Cylinder Sleeve

(f) Piston

(g) Oil pressure release valve

(h) Suction Valve reed

(j) Oil filter assembly

(k) Piston ring set

(l) Aluminium washer set

(m) Gudgeon Pin

(n) Gudgeon pin Bush

(o) Discharge valve assembly

(p) Oil pump Assembly

(q) Rocker for unloading mechanism

(r) Piston Circlip

(s) 'O' Ring set with tefelon set

(t) Liner unloading Ring with Spring & Pin

(u) Connecting rod nut & bolt

(v) Retaining spring

(w) Suction retaining plate

(x) Safety valve

(y) Gasket set complete

(z) Discharge Service Valve

(aa) Suction Service Valve

(ab) Cylinder Liner

(ac) Unloader Sleeve

(ad) Valve Lifter Pin

(ae) Valve lifter pin spring

(af) Valve Plate

(ag) Suction Valve spring

(ah) Discharge valve guide assembly

(aj) Seal End washer

(ak) Seal End Thrust washer

(al) Shaft seal cover plate

(am) Suction Filter

(an) Heater

(ao) Pump End Thrust washer

(ap) Oil filter Screen

Repair & maintenance of FRP cooling tower, complete cleaning of cooling tower basin, PVC headers, PVC nosel fills, rearranging of PVC fill block old/new including repairing of leakage of suction and discharge line and replcement of broken header and PVC nozzales. Capacity 100 TR of central AC plant by taking down electric motor, fan blade, PVC fills and iots reinstallation complete at 101 Block AC Plant.

All as per item No 71.00 above but capacity 78 TR (MLH palnt)

All as per item No 71.00 above but capacity 25 TR (E & IRS AC Plant)

All as per item No 71.00 above but capacity 7.5 TR (JIG Boring)

All as per item No 71.00 above but capacity 50 TR (CRS AC Plant)

All as per item No 71.00 above but capacity 100 TR (TTCLE AC Plant)

Material and labour for de-scaling of condenser of different capacity at various AC Plant location all as described as under : (i) Opening Block of condenser Inlet aned out let water pipe. (ii) De-Scaling of condenser tubes with de-scaling solution mixed with water by pump method for4 a duration of 08 hours continuous circulation. Note :- Cost of descaling solution is deemed to be included in quoted rates. (iii) Opening of bolts side condenser cover for following work:- (a) Cleaning of condenser fopper tubes carefully with condenser cleaning brushes to the entire satisfaction of Engineer-in-Charge. (b) Removing of rubber gasket of both side covers, preparing, new rubber gasket 6mm thick, fixing properly with existing bolts/nuts/Washers in following location of plant. (a) Condenser of capacity 4x100 TR (101 Block)

All as per item 77.00 above but capacity 78 TR (MLH palnt)

All as per item 77.00 above but capacity 25 TR (E & IRS AC Plant)

All as per item 77.00 above but capacity 7.5 TR (JIG Boring)

All as per item 77.00 above but capacity 50 TR (CRS AC Plant)

All as per item 77.00 above but capacity 100 TR (TTCLE AC Plant)

M&L for disconnecting crank shaft from the compressor, taking to workshop for recharging & machinarying/grinding to required shape to make the crank shaft manufacturing equivalent size to match with section bearings complete all as required & specified by Engr-In-Charge:- Crank shaft SMC-100 Series of Jig Boring

All as per serial item No 83.00 above but for Crank shaft SMC-65 Series of 101 Block

Complete maintenance & overhaul of water softening plant installed at various location at Air Force stn. (i) Disconnecting existing water connection, remove old waste resin, sand & supporting media from the water softener plant. Clean the entire vassel from inside and outside with suitable cleaning agent. (ii) Scrapping of old existing paint, rust & salt formation from external & internal body of plant and preparing the surface for painting. (iii) Spray painting of internal body of plant with one coat of black bituminous paint (iv) Spray painting of external body of plant with two coats of synthetic enamel gray paint of complete all as specified and directed by Engr-in-Charge. (v) Replacement of relevant item will be measured and paid as under the respective item of schedule as under :- (a) Filter Sand for DMF - Approx 150 Kg and as per requirement of equipment. (b) Supporting media - Approx 200 Kg and as per requirement of equipment. (c) Anthracite - Approx 50 Kg and as per requirement of equipment. (d) Resin as per sample for Softener : Approx 200 Ltr and as per requirement of equipment. (vi) Testing & commissioning of water softening plant after maintenance complete up to entire satisfaction of AGE/GE.

JASPREET SINGH COOLING CORP.