REPAIR MAINT OF CENTRAL PACKAGE AC PLANTS AND CONNECTED WORKS AT NORTH SIDE RUNWAY UNDER GE NW VASCO

Amount

M&L for cleaning of shell and tube water cooled condensers of the A/C plants of following capacities after dismantling the water lines and headers and cleaning with suitable wire brush and washing soda to remove the dirt and water scaling and refixing the water lines and headers including provision of new gaskets, etc for following AC plants complete all as specified and directed.

(a) 02X30 TR capacity at OLD BMF AC plant

(b) 03X48 TR capacity at EHU/ERS AC plant

(c) 03X 20 TR capacity at EHU MIG AC plant

(d) 02X37.7 TR capacity at BSF AC plant

(e) 02X7.5 TR NAY (G) Store room AC Plant

(f) 04X60 TR capacity at Mig Simulator AC plant

(g) 06X24 TR capacity at Mag Guard AC plant

(h) 02X12.5 TR capacity at EHU NAY (G) AC plant

Supply and charging compressor oil Servo manufactured by Indian Oil Corporation or Equivalvent approved make including flushing/cleaning of oil chamber etc complete all as specified and directed.rge.

Supply and filling Refrigerant gas R-22 /Mafron -22 for AC plant compressor

Supply and filling Refrigerant gas R-407 for AC plant compressor

Supply and fix in repairs ball / roller bearing for pumps and motors of following capacity including taking down old bearing and re installation at site including testing on completion complete all as specified and directed.

(a) Upto 10 HP capacity

(b) 12.5 to 15 HP capacity

(c) 20 HP to 30 HP capacity

(d ) 40 HP to 75 HP capacity

M&L for servicing monoblock pumps including dismantling and opening the pump, repair/replacement of defective impeller,replace the worn out bearing impeller, stuffing box, back plates, gland packing mechincal seal and rusted nut, bolts etc assembling property , greasing all movable parts, fixing in position, testing and commissioning all as directed for the following HP pumps.

(a) 3 HP to 5 HP Pump

(b) 7.5 HP to 10 HP Pump

(c) 12.5 HP Pumps to 20 HP pump

Supply and fixing in repair power assembly expansion valve for 60 TR capacity at Mig Simulator AC plant as per sample and complete all as specified and directed.

Supply and fixing in repair power assembly expansion valve for 30 TR capacity at Old BMF AC plant as per sample and complete all as specified and directed.

Supply and fixing in repair power assembly expansion valve for 37.7 TR capacity at BSF AC plant as per sample and complete all as specified and directed.

Supply and fixing in repair power assembly expansion valve for 24 TR capacity at Mag Guard AC plant as per sample and complete all as specified and directed.

Supply and fix of V-belt size C 2650/ C-102 including taking down old belt .

All as per item No- 11 as above but of size B-112 .

All as per item No- 11 as above but of size B- 82.

All as per item No- 11 as above but of size B- 78.

All as per item No- 11 as above but of size B- 88.

All as per item No- 11 as above but of size B- 108.

All as per item No- 11 as above but of size B-54

All as per item No- 11 as above but of size B-52

All as per item No- 11 as above but of size B-68

Supply and fix in replacement of tyre type coupling suitable for 75 HP motor coupled with 60 TR Compressor all as specified and directed by Engr-in-Charge

Supply and fix in replacement of High pressure control switch as per existing make and type at site complete all as specified and directed.

Supply and fix in replacement oil pressure control switch as per existing make and type at site complete all as specified and directed.

Supply and fix in replacement low pressure control switch as per existing make and type at site complete all as specified and directed.

Supply and fixing in replacement of power contactor assembly complete 63 Amp , 50 KA, 415 V, complete all as specified and directed.

Supply and fixing power contactor assembly complete MNX-25 as per cat No CS 94110 complete all as specified and directed.

Supply and fixing power contractor assembly complete MNX-12 with one NO and NC as per Cat No : CS94108 complete all as specified and directed.

Supply and fixing power contactor assembly complete MNX 32

Disconnecting wiring carefully and removing defective auxillary power contactor assembly complete and replacing by new one of same make and model , reconneting wiring and testing on completion .

Disconnecting wiring carefully and removing defective auxillary power contactor assembly complete and replacing by new one of same make and model , reconneting wiring and testing on completion :

All as per item No - 29 but as per cat No : 3U A 52-00-2B 12.5 to 20 amps type 3 NA with 1 NO+NC .

Supply and fixing in replacement of ML1.5 power contactor with 2NO +2NC Conforms to IS/IEC 60947-4-1 & IEC 60947-4-1 robust and suitable for hostile applications, including standard Coil of operating voltage 110V, 240V and 440V, 50 Hz .

All as per item No 31.00 but ML 2 power contactor.

All as per item No 31.00 but ML 3 power contactor.

All as per item No 31.00 but ML 4 power contactor.

Overvload relay range 9-15 amps . L&T (MRP) suitable for ML-1/ML-1.5 contactor

Overvload relay range 20-33 amps . L&T (MRP) suitable for ML-2/ML-3 contactor

Overvload relay range upto 7.5 amps . L&T (MRP) suitable for MNX contactor

Supply and fixing electronic timer ST 100 (3 to 10 Sec) 240V or as per existing . Make – L & T ST80328OOOO or equivalent make as C & S. including taking down of old one.

Supply and fixing in repair single phasing preventor Relay (Auto / Manual / Remote Reset Adj.preeventor complete all as specified and directed.

Supply and fixing single phasing protection Relay 415 VAC, 3 PH 3 W,1 C/O complete all as specified and directed.

Supply and fixing under voltage/overvoltage relay .240 VAC, 3 PH4 W,1 C/O complete all as specified and directed.

Supply & fixing digital type ammeter panel mounting three phase LED type 96 x 96 mm square including taking down old meter complete all as specified and directed.

Supply & fixing digital typer voltmeter panel mounting three phase LED 96 x 96 mm square including taking down old meter complete all as specified and directed.

Supply and fixing current transformer secondary current 5 Amps and primery current up to 60 Amps including taking down old current transformer complete all as specified and directed.

Supply and fixing current transformer secondary current 5 Amps and primery current up to 30 Amps including taking down old current transformer complete all as specified and directed.

Supply and fixing in repair themometer suitable for condenser water line with suitable housing to mount in pipe line 0 – 100 deg C including taking down old themostat complete all as specified and directed.

Supply and fixing indicator lamp assembly complete LED type suitable for the existing system supply voltage for the existing system supply voltage 230V / 440 V AC including taking down old lamp assembly complete all as specified and directed.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 100 Amps breaking capcity 16 KA complete all as specified and directed.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 125 Amps breaking capcity 25 KA complete all as specified and directed.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 200 Amps breaking capcity 25 KA complete all as specified and directed.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 250 Amps breaking capcity 25 KA complete all as specified and directed.

Supply and fixing in repair of MCB TP 40 to 63 Amps 10 KA complete all as specified and directed.

Supply and fixing in repair of MCB SP 06 to 323 Amps 10 KA complete all as specified and directed.

Dismantling and removing the electric motor, capcity 3 phase 415 Volts from base frame, transporting to workshop checking of winding / leads for any loose connection, varnishing and baking in winding properly after dismantling and then re-assembling proerly transporting back to site re-installation, re-alignment and testing complete all as directed.

(a) Capacity 30 HP to 75 HP

(b) Capacity 10 HP to 20 HP

(c) Capacity upto 7.5 HP

Dismantling the unserviceable electric motor any type or of any capacity and transporting to reputed workshop, taking out old and burnt winding wire and rewinding with super enameled copper winding wire of existing gauge and size with insulating materials, varnishing and baking etc, re-fixing the same at site and re-alignment, testing and commissioning complete all as specified and directed.

Taking out old and unserviceable PVC fins of cooling tower of any capacity AC plant and replacing with new one including setting complete all as specified and directed.

Supply and fixing in reapir fabricated micro filter upto 90 micron made out of GI channel frame overall size 55 cm x 55 cm x 5 cm including nylon micro filter and wire mesh covered front and back all as per sample given including taking down old micro filter complete all as specified and directed.

All as per item No 57 above but overall size 60 cms x 60 cms x 5 cm .

All as per item No 57 above but overall size 63 cms x 50 cms x 5 cm .

All as per item No 57 above but overall size 52 cms x 47 cms x 5 cm .

All as per item No 57 above but overall size 100 cms x 120 cms .

Supply and fix in repair DOL starter suitable for 5HP motor capacity 9 to 14 Amp complete with over load relay , single phasing preventer under volt release in existing enclosure etc complete all as specified and directed.

Supply and fix in repair DOL starter suitable for 10 HP motor capacity 14 to 23 Amp complete with over load relay , single phasing preventer under volt release in existing enclosure etc. complete all as specified and directed.

Nitrogen testing for the following capacity of compressors including condensing unit and gas piping complete as per the manufacturer instructiions and entire satisfaction of the Engineer in Charge. Note :- Nitrozen pressure should be held with out any drop in pressure inside the unit continue for 24 hours.

(a) 02X30 TR capacity at OLD BMF AC plant

(b) 03X48 TR capacity at EHU/ERS AC plant

(c) 03X 20 TR capacity at EHU MIG AC plant

(d) 02X37.7 TR capacity at BSF AC plant

(e) 02X7.5 TR NAY (G) Store room AC Plant

(f) 04X60 TR capacity at Mig Simulator AC plant

(g) 06X24 TR capacity at Mag Guard AC plant

(h) 02X12.5 TR capacity at EHU NAY (G) AC plant

Preparation of old painted surfaces by removing dust, rust etc and, applying two coats of synthetic enamel paint with spray gun of approved make and colour for cooling tower, condensing pipe line condenser water pumps including all pipe line valves etc. of 5 TR to 20 TR Capacity Plant.

Preparation of old painted surfaces by removing dust, rust etc and, applying two coats of synthetic enamel paint with spray gun of approved make and colour for cooling tower, condensing pipe line condenser water pumps including all pipe line valves etc. of 24 TR to 60 TR Capacity Plant.

Supply and fix CT fan (with hub and fan blade) of capacity 75 TR to 150 TR cooling tower all as specified and directed by Engr-in-Charge

Supply and fix CT fan (with hub and fan blade) of capacity upto 60 TR cooling tower all as specified and directed by Engr-in-Charge

Supply and fixing of union 40 mm of water tower all as specified.

Supply and fixing of union 32/25 mm of cooli ng tower all as specified.

Supply and fixing of gate valve 40 mm of cooling tower all as specified.

Supply and fixing of gate valve 32/25 mm of cooling tower all as specified.

S & F in repair chilled water sesor for AC Plants of various capacity

S & F loading/unloading switch assembly for compressor of capacity upto 15 TR.

S & F loading/unloading switch assembly for compressor of capacity from 20 TR upto 30 TR.

S & F loading/unloading switch assembly for compressor of capacity from 45 TR upto 60 TR.

S & F pressure gauge for neon gases 0 to 25 kg .

S & F pressure gauge for freon gases 0 to 16 kg .

S & F microprocessor for compressor of capacity from 20 TR to 37.7 TR

S & F microprocessor for compressor of capacity from 45 TR to 60 TR

S & F cooling tower nozzles 1/4'' size

S & F block bearing for air handling unit of any size

Realignment of compressor and motor of any capacity on existing foundation.

S&F in repair pre-filter capsule suitable for accommodating five units of corrosion & scale inhibitor sealed refill of 51.0cm for cooling tower application.

S&F in replacement of strip heater 2 KW capacity including making electrical connections with main supply complete all as specified and as directed.

All as per item No 85.00 above but strip heater capacity 3 KW capacity.

Evacuation of gas/ Refrigerant from the system into the empty cylinders before dismantling of old unserviceable compressor from condensing or chiller unit M & L for dismantling UNSV compressor , and Supply, installation, testing & commissioning of scroll compressor of capacty 12.5 TR , 3 Phase, 415 V , model No.SM185S4RC (Make- Danffoss) , self lubricating complete including HP and LP sensors with control wiring , connecting and rewiring with microprocessor based control panels and all as specified & directed by Engineer-in-Charge . Note:- The rate quoted by the contractor for the above item shall be deemed inclusive of the following:- (i) Refrigerant storage containers. (ii) Refrigerant pumping system. (iii) Recharging of refrigerent required to top up into the system to achieve desired suction and discharge pressure (iv) Rewiring / reconnection of the system with Microprocessor based control panel from authorised manufacturers.

S&F in replacement of oil pressure sensor suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and directed.

S&F in replacement of High pressure sensor suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and directed.

S&F in replacement of Low pressure sensor suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and directed by Engr-in-Charge

S&F in replacement of unloading solenoid assembly suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and directed.

S&F in replacement of magnetic coil for unlaoding solenoid suitable for voltas 5H-60 compressor as per sample available at site complete all as specified and directed.

S&F in replacement of extension pipe with closing valve 1/4"X1/4' as per sample available at site complete all as specified and directed.

M&L for oil diffrential pressure control high pressure and low pressure switch, rewiring of the control and connecting to starter panel complete all as specified and directed.

S&F in replacement of HDPE make up water tank of 1000 litre capacity with air vent, drain, overflow and make up connection with PVC High Pressure float valve complete all as specified and directed.

M & L for taking out old worn out cladding and supply and rapping glass wool and aluminium cladding to cover the GI tubing 100/80/65 mm bore to avoid heat condution.

S & F in repairs liquid line drier 5/8" x 5/8" all as directed

All as per item No 97.00 above but of in suction side of size 1/2" all as directed

S & F in repairs cooling tower fan blade assy of sixe 24 to 30" (MN 2 model of M/s Mihir Engineers) complete all as specified and directed.

S & F in repairs water line strainer 2 1/2" dia size with GI flange including necessary joint arrangement complete at NDT Ejection Bay AC plants all as directed

S & F in repairs condensor monoblock water pump set 3 HP 3 phase capacity with suitable head and discharge ammunator store including necessary PCC foundation work and electric/ water connection complete all as directed.

Supply only Pressure Gauge 0 x 300psi (100mm) all as directed

M & L Overhauling/ repair of all refrigertion line valve of any size, globe valves angle way valves including replacement of Teflon seat, 'O' ring packing glands etc all as directed

M & L for replacement of tarpaulim canvas cloth connecting the air outlet and main duct of AHU as per existing size and thickness inclusing provision of chain with Zip for taking Wet/ Dry Bulb reading, angle iron complete, including taking out unserviceable as directed

M & L for side/ lower tray panels for coil section masde out of Mild steel plain sheet of thickness 1.60 mm, cut yo sixe, holes punched, including round headed screws, or rivets and fixed to steel framing as required and painting with two coat of synthetic enamel grey paint over a coat of red oxide primer for Air handling all as specified

S & F in repairs Electronic New Micro processor suitable for 8.5 TR package type AC plant including electrical connection etc all as directed

S & F in repairs Thermal over load relay 2.5 to 9 Amp complete all as specified and directed.

S & F in repairs Pedestal Bearing Model : NTN F- of any size AHU blower shaft all as directed

Dismantling carefully and removing of old U/S compressor's sealed unit of 5.5Ton capacity from package type Air conditioner and supply anf fix new sealed unit of 5.5 Ton capacity complete with all standeard accessories as per existing AC plant complete all as specified and directed. Note:- Sealed unit shall be purchased from authorised dealers/agents

Dismantling carefully and removing of old U/S compressor's sealed unit of 8.5Ton capacity from package type Air conditioner and supply anf fix new sealed unit of 8.5 Ton capacity complete with all standeard accessoriesa as per exisiting AC plant complete all as specified and directed. Note:- Sealed unit shall be purchased from authorised dealers/agents

Rewiring of all electrical controls inclsuing Micro- processor, electric contractor, supply and fix in replacement of auxiliay contractor for one of central AC plant package type AC plant of any capacity complete all as specified and directed.

S & F fix in repairs fabricated micro filter upto 90 micron made of HDPE overall size 100 cm x 120 cm (as per sample) complete all as specified and directed.

S & F in repiars of Thermostatic Expansion Valve assembly complete Model : MVE -7 suitable for gas F-22 of complete all as specified and directed.

S & F in repairsThermostatic Expansion Valve assembly complete Model : MVE-5 siuitable for gas F-22 of complete all as specified and directed.

Dismanting of damaged cooling coil of 5TR to 20 TR AC plantcapacity and repairing of coling coil to distributor and nrow paralleled 5/16 size and from distributor to expansion valve and room expansion value to compressor suction line with 11/8" size of coopwer pipe including following items :- (a) Expansion value 5 TR-02 Nos (b) Distributor -02Nos (c) Filter drier 5/8x5/8-02 Nos (d) Hand shut off value 5/8"-02Nos

All as per item No 115 above but 20 TR to 60 TR AC plant .

S & F in repairs DOL starter MK-1 complete with over load relay, SPP under volt release etc complete all as specified and directed.

S & F in reapairs DOL starter suitable for 5HP TO 10HP motor MK-1 complete with over load relay, single phasing preventer under volt release etc all as directed.

Supply and fix Starter box suitable for 5.5 TR package type unit including suitable accessories like power contactor three phase, 415 volts, MCBs, connector single preventer over load reley, control wiring with arrangement of auto/mannual control ON/OFF switch and including sheet metal enclosure of 2 mm thick CRCA sheet of adequate size with powder coated for enclosing with necessary fixing arrangements in AC plant unit by providing nuts, bolts, washers etc complete all as specified and directed by Engr-in-charge.

Supply and fix pipe MS ERW steel including all special heavy duty duly welded with 16 mm thick MS flange and drilled for fixing 16 mm dia bolt & nuts washer including rubber gasket etc all as specified and directed of following sizes :-

(a) 100 mm dia

(b) 80 mm dia

(c) 50/63 mm dia

(d) 32/40 mm dia

Charges for attending break down of AC plant of 5 TR to 20 TR capacity by only auth OEM rep / team for fault finding incl attending repairs as and when required such as No start condition of AC plant and repairing, starting the AC plant till smooth running and setting up the alighnment/required paramenters of all major parts such as fan belt, compressor, gas charge, cooling tower, power contactor, starter, MCCBs, Micro processor based control panel, pumps etc as required in ground/as ordered by EIC all as directed. Note:-The payment for the above shall be made to Contractors after submitting the original invoice only

Ditto all as per item No 121 here in before but of AC plant capacity 20 TR to 60 TR.

Darpan Construction

star freeze service

Heat Control