REPAIRS MAINT OF AIR CONDITIONING PLANT CENTRAL AC PLANTS AND PACKAGE TYPE AC PLANTS AT INS UTKROSH NTS TEYLERABAD AND NAD DOLLYGUNJ OF AGE EM-II UNDER GE MINNIEBAY PORT BLAIR

Amount

Overhauling of compressor 22.5 TR complete including taking down unserviceable parts and refixing new parts whererever necessary complete all as directed by Engr-in-Charge after pumping down the complete system and collecting the refrigerant into container, compressor oil into clean container, disconnecting the compressor from suction & discharge side and including leak testing of compressor after reassembling the parts, recharging/filling retrived oil & gas, replacement of belt if required and testing upto satisfactory cooling performance complete all as specified and as directed. Make: Bock compressor.(INS Utkrosh) Note: (i) spare parts , refrigerant (gas) & compressor oil for top up if required shall be measured and paid for seperately as supply only in respective item of this schedule. (ii) Metal filling , grinding, polishing spring, washer, quarter, and consumable items such as grease cotton waste etc., are deemed to be included in the quoted rate. (iii) Belt shall be paid seperately as supply only.

Overhauling of compressor 36TR complete including taking down unserviceable parts and refixing new parts whererever necessary complete all as directed by Engr-in-Charge after the pumping down the complete system and collecting the refrigerant into condener, compressor oil into clean container, disconnecting the compressor from suction & discharge side and including leak testing of compressor after reassembling the parts, recharging/filling retrived oil & gas, replacement of belt if required and testing upto satisfactory cooling performance complete all as specified and as directed. Make: Bock compressor.(NTS Teylerabad) Note: (i) spare parts , refrigerant (gas) & compressor oil for top up if required shall be measured and paid for seperately as supply only in respective item of this schedule. (ii) Metal filling , grinding, polishing spring, washer, quarter, and consumable items such as grease cotton waste etc., are deemed to be included in the quoted rate. (iii) Belt shall be paid seperately as supply only.

M&L for repair to suction & discharge valve of compressor 22.5 TR / 36 TR of capacity by means of replacing the teflon washer sheet, suction & discharge valve ring, spring, 'O' rings, gaskets etc complete and testing for proper holding of valve, leak testing etc all as specified and as directed. make: ACCEL.compressor.& BOCK compressor. Note: The rate shall be inclusive of suction & discharge valve which is consider as one job.

M & L for descaling the shell & tube condenser of 22.5/ 36 TR capacity at by circulating the descaling chemical (scale gun) (HCL acid) through condenser by pressure feeding method after disconnecting condenser water lines, and opening the end covers of both side, brushing condenser water tubing, removing the scales, normalising the copper surface circulation normalising agent and refixing all dismantled parts including replacement of gasket set all as specified and directed by Engineer-in-charge.

M & L for leak testing of AHU unit cooling coil after pumping down the complete system, isolating the cooling coil from both ends and charging the dry nitrogen gas for pressure leak test, after detecting leak point, release the nitrogen gas, repairing the leak point but means of soldering/brazing and connecting the cooling coil with system, vaccumised the complete system and re-charge the system by refrigerant, testing and commissioning up to satisfactory cooling performance of 45/72TR capacity. Note: (i) Refrigerant gas shall be mesaured and paid separately as supply only. (ii) Nitrogen gas required deemed to be inclusive in the quoted rate.

M & L for leak testing of AHU unit cooling coil after pumping down the complete system, isolating the cooling coil from both ends and charging the dry nitrogen gas for pressure leak test, after detecting leak point, release the nitrogen gas, repairing the leak point but means of soldering/brazing and connecting the cooling coil with system, vaccumised the complete system and re-charge the system by refrigerant, testing and commissioning up to satisfactory cooling performance of 16 TR capacity. (INS Utkrosh) Note: (i) Refrigerant gas shall be mesaured and paid separately as supply only. (ii) Nitrogen gas required deemed to be inclusive in the quoted rate.

M & L for leak testing of AHU unit cooling coil after pumping down the complete system, isolating the cooling coil from both ends and charging the dry nitrogen gas for pressure leak test, after detecting leak point, release the nitrogen gas, repairing the leak point but means of soldering/brazing and connecting the cooling coil with system, vaccumised the complete system and re-charge the system by refrigerant, testing and commissioning up to satisfactory cooling performance of 10 TR capacity. (INS Utkrosh) Note: (i) Refrigerant gas shall be mesaured and paid separately as supply only. (ii) Nitrogen gas required deemed to be inclusive in the quoted rate.

M&L for Cleaning / servicing the cooling coil of AHU AC plant by pressure air method with using air blower and cleaning the cooling coil with cleaning the solution, cleaning the AHU base tray completely and applying one coat of synthetic enamelled paint inside the base tray, including greasing to AHU blower shaft bearing for smooth functioning, cleaning the AHU filter of 45 / 72 TR plant capacity complete all as specified and as directed.

S & F in Replacement of panel air filters, dry type, washable, rated air flow capacity 1600 CFM 99.9%, down to particle 20 micron of Suitable sizes or nearest for AHU of central AC plant (22.5/36 Tr)

M&L for pumping down the gas of the Package type AC plant of various capacities pressure testing the complete plant by dry nitrogen gas by separating high side and low side, rectifying the leakage by gas welding brazing pressure testing vaccuming the system and re-charging the system with gas, testing and commissioning complete.(INS Utkrosh 16Tr,10Tr, & NAD 8.5Tr) Note:- (i) Nitrogen gas required shall deemed to be include in the quoted rate. (ii) Refrigerant gas shall be mesaured and paid separately as supply only.

Cleaning / servicing the cooling coil of AHU AC plant by pressure air method with using air blower and cleaning the cooling coil with cleaning the solution, cleaning the AHU base tray completely and applying one coat of synthetic enamelled paint inside the base tray, including greasing to AHU blower shaft bearing for smooth functioning, cleaning the AHU filter replacement of V-belt (if required) of 16 TR plant capacity at INS Utkrosh & NAD Dollygunj all as specified .

Supply & Fix in replacement of compressor unit of capacity 11TR to 16TR package type AC plant including mounting brackets , clamps nut bolts and necessary electrical connections all as specified and directed

Supply & Fix in replacement of compressor unit of capacity 10TR package type AC plant including mounting brackets , clamps nut bolts and necessary electrical connections all as specified and directed

Supply & Fix in replacement of compressor unit of capacity 8.5/5.5TR package type AC plant including mounting brackets , clamps nut bolts and necessary electrical connections all as specified and directed

Cleaning / servicing the cooling coil of AHU AC plant by pressure air method with using air blower and cleaning the cooling coil with cleaning the solution, cleaning the AHU base tray completely and applying one coat of synthetic enamelled paint inside the base tray, including greasing to AHU blower shaft bearing for smooth functioning, cleaning the AHU filter of 10 TR plant capacity at INS Utkrosh & all as specified by Engineer-in-charge.

M&L for pumping down the gas of the Central AC plant of various capacities pressure testing the complete plant by dry nitrogen gas by separating high side and low side, rectifying the leakage by gas welding brazing pressure testing vaccuming the system , testing and commissioning complete.(INS Utkrosh 22.5TR & NTS Teylerabad 36 TR).

Cleaning/servicing of cooling tower, natural draught type of central AC plant including cleaning of wooden louvers by scraping inside and outside, cleaning of water tank, cleaning of nozzles (brass/PVC) , arranging all wooden louvers in correct manners, and applying one coat of bituminous paint inside and outside of water tank complete of capacity 45 / 72 TR complete all as specified and as directed.

Supply and ixing of PVC spray nozzles 20 mm size for cooling tower as per sample.

Supply and fixing of PVC spray nozzles 25 mm size for cooling tower as per sample.

Preparation of old painted surfaces and applying two coats of synthetic enamelled paint to external surfaces to compressor with motors - 03 No's, foundation of compressor & motor units- 03 No's, suction & discharge refrigerant pipe line, condenser water pump with motor & foundation - 02 No's, water pipe line, AHU unit and motor/blower- 01 No, condenser - 03 No's of any capacity of central AC plant. (INS Utkrosh / NTS Teylerabad)

Supply & fix replacement of MCCB 4-pole 250 Amps with breaking capacity 36 KA adjustable thermal magnetic setting Ios=75% of Icu Make : L&T thermostat type all as specified and directed.

M & L for dismantling burnt out three phase, 50 C/S capacity 25 HP motor for rewinding with same guage, weight and same number of turns of super annealed copper wire including paper/tape of approved quality and varnishing with Class I varnishing compound including heating and re-assembling the motor, testing and commissioning after repair complete all as specified.

All as per item No.22 but motor capacity 12.5 HP.

All as per item No.22 but motor capacity 10 HP.

All as per item No.22 but motor capacity 7.5 HP.

All as per item No.22 but motor capacity 5 HP.

S & F in replacement of `V' belt size B-78 complete all as directed at site.

S & F in replacement of `V' belt size A-32 complete all as directed at site.

M&L for dismantling of Monoblock pump set up to 10 HP removing scales cleaning, heating varnishing of motor winding, servicing the pump sets by repalcing the worn out bushes, bearings, gland rope, gland bolts & nuts, painting Two coat etc and reassembling the complete pump set including testing and commissioning complete all as directed by Engineer - in - Charge.

S & F in replacement of pressure gauge of HP size 4" dia of rating 0 - 300 PSI all as specified .

S & F in replacement of water pressure gauge of 4 " dia of range 0 - 7 Kg /sqcm or 0 - 100 PSI all as specified

S & F replacement of pressure gauge of LP OP (low pressure /oil pressure) size 4" dia of rating -30 to 150 PSI all as specified

S & F in replacement of HP cut out Type MP - 5 suitable for R - 22 gas complete all as specified and as directed.

S & F in replacement of LP/HP combination cut out MP - 15 Suitable for R 22 gas complete with flare nut complete all as specified and as directed.

S & F in replacement of oil pressure control switch type MP - 55 suitable for R - 22 complete with flare nut complete all as specified and as directed.

S & F in replacement of solenoid pilot control valve type 10 with two / three coil assembly of same model all as specified. (INS Utkrosh & NTS Teylerbad, NAD Dollygunj)

Supply only synthetic refrigeration compressor oil suitable for 36TR compressor.

Supply only compressor oil N 68 seetul suitable for ACCEL compressor of capacity 22.5 TR

S&F in replacement of thermostatic expansion valve of model MWE - 34 - CP 100 of Make - SPORLAN all as specified.(INS Utkrosh & NTS Teylerabd, NAD Dollygunj)

Supply only refrigeration gas R 22 in manufacturer sealed cylinder. Note:- (i) Gas to be supplied in manufacturer sealed container. (ii) Empty containers will be returned to contractor .

S&F in replacement of 6/10 mfd condensor suitable for cooling fan motor of outdoor unit of package AC plant 5 TR capacity (INS Utkrosh).

S&F in replacement of 20 mfd condensor suitable for cooling fan motor of outdoor unit of package AC plant 8.5 TR capacity

S&F in replacement of 20 mfd condensor suitable for cooling fan motor of outdoor unit of package AC plant 10 TR capacity(INS Utkrosh)

S&F in replacement of condensor fan motor including blade1/5 HP single phase complete for 5 TR package AC plant .

S&F in replacement of condensor fan motor 1/5 HP single phase complete for 8.5 TR package AC plant complete all as specified and directed at site.

S&F in replacement of condensor fan motor 3/4 HP single phase complete for 10 TR package AC plant complete all as specified and directed at site.

S&F in replacement of condensor fan motor 3/4 HP single phase complete for 16 TR package AC plant complete all as specified and directed at site.

S&F in replacement of micro computer control with PCB complete for package AC unit 5 to 16 TR complete all as specified and directed at site.

Supply and fix bearing suitable for 25 HP three phase motor .

Supply and fix replacement of bearing suitable for 20 HP three phase motor .

Supply and fix replacement of bearing suitable for 10 HP three phase motor .

Supply and fix replacement of bearing suitable for 7.5 HP three phase motor

Supply and fix replacement of bearing suitable for 5 HP three phase motor

Supply and fix replacement of bearing suitable for 3 HP three phase motor

Supply and fix replacement of bearing suitable for 1 HP three phase motor

Supply and fix replacement of threaded flanged joints suitable for 80/100mm bore GI pipe.

Supply and fix replacement of sump heater assy Cat No. 8426 Make. Bock

Attending breakdown of Central/Package type AC plant of any capacity to check and locate / detect fault related to breakdown and brings to normal working condition complete all as directed by Engineer-in-Charge. Note:- (a) Spares will be measured and paid separately under relevant items. (b) The break down complaint should be attended within 2 hours with the intimation of Engineer-in-Charge ro concerned JE E/M by telephonically / cerbally. (c) Not attended of complaint within two hours will lead to recovery from subsequent payment in the following manner:- (i) Not attending within 2 to 4 hours - Rs.2000/- (ii) Not attending within 4 to 6 hours -Rs.4000/- (iii) Not attending within 6 to 8 hours- Rs.8000/- (iv) Not attending withing 8 hours - Rs.10,000/- (v) The maximum recovery will be Rs.50,000/- plus the expenditure incurred for rectification of the same by any other means.

Supply & fix replacement of power contactor Make: MNX 45 of L&T or equivalent in Siemens, C&S Electric or Schneider Electric as approved by GE.

Supply & fix replacement of power contactor Make: L&T MNX 25 /Havells/Legrand/Crompton or equivalent as approved by GE

Supply & fix replacement of power contactor Make: MNX 18 of L&T or equivalent in Siemens, C&S Electric or Schneider Electric as approved by GE

Supply & fix of electronic type star delta starter fully automatic suitable for 10 HP water coolant motor. Make: L&T/Crompton/Siemens or equivalent as approved by GE all as specified & directed.(NTS Teylerabad)

Supply & fix in replacement of over load relay suitable for 22.5 & 36 TR compressor motor starter all as specified & directed.

Supply & fix in replacement of timer 22.5 & 36TR compressor motor starter all as specified & directed. Make : BCH

Supply & fix in replacement of drier core suitable for 36 TR Central AC plant,all as specified & directed.

Supply & fix in replacement of drier core suitable for 22.5 TR Central AC plant,all as specified & directed.

Supply & fix in replacement of drier core suitable for 16 TR Central AC plant,all as specified & directed.

Supply & fix in replacement of drier core suitable for 10 TR Central AC plant,all as specified & directed.

Supply & fix in replacement of drier core suitable for 5 TR Central AC plant,all as specified & directed.

Supply only Seegar ring standard size for compressor SMC 6-65 Make ACCEL

Supply only Suction valve retaining plate for compressor SMC 6-65 Make ACCEL.

Supply only discharge valve retaining plate for compressor SMC 6-65 Make ACCEL complete all as directed at site.

Supply only Piston standard size for compressor SMC6-65 Make ACCEL complete all as directed at site.

Supply only Oil regulating valve for compressor SMC 6-65 Make ACCEL complete all as directed at site.

Supply only Bush for piston pin for compressor SMC 6-65 Make ACCEL complete all as directed at site.

Supply only Piston pin for compressor SMC 6-65 Make ACCEL complete all as directed at site.

Supply only Rocket arm spring for compressor SMC 6-65 Make ACCEL complete all as directed at site.

Supply only oil pump assembly for compressor SMC 6-65 Make ACCEL complete all as directed at site.

Supply only Unloading cylinder for compressor SMC 6-65 Make ACCEL complete all as directed at site.

Supply only Crankshaft assembly for compressor SMC 6-65 Make ACCEL complete all as directed at site.

Supply and Fixing Expansion valve for 5.5 TR condensor Make : Danforce complete all as directed at site.

Supply and Fixing Gasket set for compressor SMC 6-65 Make : ACCEL complete all as directed at site.

Supply and fix PC Board assembly suitable for 16 TR package AC Make : Blue star complete all as directed at site.

Supply and Fixing in replacement of Air cooled condensor out door type with tank and copper tube for discharge line unit assembly including contactor capacitor suitable for capacity 5.5 / 8.5 / 10/ 16 TR all as specified and directed Make: Blue star

M & L for discannecting , removing of 3 HP motor form package type AC carry out to workshop for repairing, brushing . Cleanig and replaced necessaary required items , rixing in the same position with out damge all as specified and directed

Supply and fixing fan blade for 5.5/ 8.5/ 10/ 16 TR condensor including louvers shall all as specified and directed Make: Danforce

Supply& fixing shaft seal assy for 22.5/36 tr including connected accessories etc. ACCEL/BOCK complete all as specified and directed.

Supply and fix in replacement of old unserviceable GI Sheet with TDF flange rectangular/square duct made out of 'L' shaped hollow profile,duly factory boxed ,incl all accessories such as supply air and return air diffuser,corner, cleat,carrage bolt,gasket and appropriate sealent on longitudinal joints etc complete of size 18 Gauge complete all as specified and directed.

M&L for reparing existing LT panel dismantling all damaged doors, hinges and repair & replacement of all damaged doors with new nut and bolts and washers refixing in the same place properly with painted and applying two coats of synthetic enamelled paint to external & internal surfaces all as specified.

Tropical Refrigeration

M/s Electrotech