REPAIR AND MAINTENANACE OF CENTRAL AC PLANTS AC DUCTING AND OTHER CONNECTED WORKS IN TECH AREA CVRDE AVADI

Amount

M&L for disconnectiong electrical connections, removing the defective scroll compresser three phase 15TR capacity from the mounting bed of central type Air Conditioner plant , dismantle the unit by cutting and Rewinding the compressor coil with feron resistance Super enamelled copper wire and replace bearing and worn out parts of compressor with lathe work for proper alignment with fill up of lub oil and assemble the unit , fixed in Central AC plant Testing and commissiong chillar package AC system complete. The job is inclusive of cutting, transporting brazing the suction and discharge lines by, reconnecting at site . Compressor make : Danfoss Model No SZ185S4RC. Note : Refrigerent charging will be measured and paid seperatly under relevant.

M&L for charging R-407A/R-22/R-403ARefrigerant gas complete all as specified and directed by Engineer -in-Charge.

Supply and fix in repair Dial type with adjustable stem thermometer range min 50 degree all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement of dial pressure gauge 0-150 PSI all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement of pressure gauge cock brass of size 3/8" & 1/2" complete all as specified and directed by Engineer -in-Charge.

Supply and fix in repair Y strainer of size 80mm all as specified and directed by Engineer -in-Charge.

Supply and fix in repair butterfly valve 80mm dia, both ends flanged and drilled with disc of CI with epoxy coating class PN1.6 all as specified and directed by Engineer -in-Charge.

Supply and fix in repair butterfly valve 100mm dia, both ends flanged and drilled with disc of CI with epoxy coating class PN1.6 all as specified and directed by Engineer -in-Charge.

Supply and fix in repair water flow switch all as specified and directed by Engineer -in-Charge.

M&L for Disconnecting and removing the existing monoblock pumpset from the installed position by putting dummy plate to suction and delivery pipe line,transporting to workshop. Deassemble the motor removing the burnt out windings,cleaning slots with CTC, and rewinding the same with suitable super enameled copper conductor, insulating varnishing, removing, replacing the worn out bushes/ bearing and pump shaft repair by lathe work for proper alignment, replace gland rope, rubber coupling,washers, nuts and bolts for smooth functiong with one coat of primer & two coat of synthetic enamel paint after scraping the body surface of pump&motor with emery paper,writing letters ,assemble the motor&pumpset Transporting to site coupling, connecting electrical&pipe connections testing complete for following cap at central AC Plant complete all as specified and directed by Engineer -in-Charge. (a) 7.5HP Monoblock pumpset.

All as per item No 10 above but 5HP complete all as specified and directed by Engineer -in-Charge.

M&L for carry out the leak test at central ac plant refrigeration system by charging the dry nitrogen gas & hold up to 24hrs and rectifying the leakage if any by bracing/ welding/ replacing the 'O' ring etc all as specified and directed by Engineer -in-Charge.

M&L for replacement thermostatic expansion valve brass type temperaqture range -25 to +25 degree range with connection accessories at cental Ac plant complete all as specified and directed by Engineer -in-Charge.

M&L for Chiller unit Control panel suitable 72TR cap compressor of Central AC plant M/s Voltas brand with inbuilt saftey control, contactor, Timers control wiring micro controller unit incl taking down u/s panel complete testing all as specified and directed by Engineer -in-Charge.

M&L for Chiller unit Control panel suitable 26TR cap compressor of Central AC plant M/s Voltas brand with inbuilt saftey control, contactor, Timers control wiring micro controller unit incl taking down u/s panel complete testing all as specified and directed by Engineer -in-Charge.

M&L for preparation of surfaces of pipe line, pumpset and foundation channel, LT Panel of AC plant and painting one coat of red oxide primer and two coat of synthetic enamel paint complete all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement of Pressure relief valve in AC Plant Condenser unit all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement of Dryer unit in AC Plant Condenser unit all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement of high Pressure switch in AC Plant Condenser unit all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement of low Pressure switch in AC Plant Condenser unit all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement of chiller water cut off switch in AC Plant unit all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement of chiller sensor in AC Plant unit all as specifed and directed.

Supply and fix in replacement power contactor 3 pole AC 3 phase 40 Amps capacity. In AC plant compressor control panel board all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement power contactor 4 pole AC 3 phase 32 Amps capacity. In AC plant condenser, chiller motor control panel board all as specified and directed by Engineer -in-Charge.

Supply and fix in replacement over load relay upto 32A capacity. In AC plant condenser, chiller motor control panel board all as specified and directed by Engineer -in-Charge.

S&F in replacement MCB three Pole C-40A Amps 415Volt 3 phase all as specified and directed by Engineer -in-Charge.

S&F in replacement Thermal ovel load relay MK1 type range 11-18A range complete all as specified and directed by Engineer -in-Charge.

S&F in replacement of Direct-On-Line starter in sheet metal enclosure Type MK suitable for motor rating upto 7.5HP, 415V, 50Hz relay range 13-22A complete all as specified and directed by Engineer -in-Charge.

S&F in replacement of fully automatic star delta starter in sheet metal enclosure Type MK 1F suitable for motor rating upto 15HP, 415V, 50Hz relay range 14-23A complete all as specified and directed by Engineer -in-Charge.

Supply and lay MS Pipes heavy grade with all fittings laid in floors or fixed to walls and ceilings etc of size 25 mmall as specified and directed by Engineer -in-Charge.

All as per item above No 30 but size 40 mm

All as per item above No 30 but size 50 mm

All as per item above No 30 but size 80 mm

All as per item above No 30 but size 100 mm

Supply and fix Butterfly Valve incl connecting flanges of size 50mm aall as specified and directed by Engineer -in-Charge.

All as per item above No 35 but size 80 mm

All as per item above No 35 but size 100 mm

M/s.Sai Agency

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