annual maintenance of electrical equipment at isbts repairing, maintenance and servicing of existing water coolers and air conditioners in the premises of both isbts anand vihar and sarai kale khan - 1 servicing of existing water coolers i / c painting of compressor testing etc. as required. 2 repairing / replacement of water cooler compressor ( reciprocatory ) i / c gas charging, testing etc. as required. 3 gas charging in the existing water cooler i / c replacement of capillary testing etc. as required. 4 supply / replacement of following spares in the water coolers. ( a ) running capacitor suitable for water coolers 5 ( b ) starting capacitor for water coolers 6 ( c ) starting relay for water coolers. 7 ( d ) thermostat relay for watercoolers. 8 ( e ) condensing coil. 9 rewinding of fan motor of water cooler i / c replacement of shaft if reqd. etc. as reqd. 10 s / replacement of fan motor suitable for water coolers including connection, testing etc. as reqd. 11 checking of all 150 / 240 / 320 ltr. water coolers by service mechanic by weekly and do the needful as reqd. 12 supply and installation of 1.5 ton capacity split type air conditioners with rotary compressor and star rating 3 star suitable for wall mounting operation on 230 volts 50 hz single phase ac supply capable for performing the functions as cooling.dehumidifying, air circulating and filtering completed as required. 13 supply and installation of 1.5 ton capacity window type air conditioners with rotary compressor and star rating 3 star operation on 230 volt 50 hz single phase ac supply capable for performing the functions as cooling.dehumidifying, air circulating and filtering completed as required. 14 gas charging in the existing 1 / 1.5 ton / 2.00 ton window type air conditions i / c testing etc. as required. 15 gas charging in the existing 1.5 ton / 2.00 ton split type air conditions i / c testing etc. as reqd. 16 supply and replacement of 1.5 ton capacity reciprocity / rotary compressor complete as in the existing window type air conditioners or split type air conditioners unit and repairing rejoining of copper pipes i / c connection, testing etc. as reqd. 17 supply and replacement of condensing / cooling coil for window type 1.5 ton / 2.00 ton air conditioners i / c connection, testing etc. as required. 18 supply and replacement of condensing / cooling coil for split type 1 / 1.5 ton / 2 ton air conditioners i / c connection, testing etc. as required.