Repairs And Maintenance Of Central Ac Plant At Technical Area At Cvrde Avadi; 1 M&L for disconnecting electrical connections,Deep cleaning with cleaning materials and removing the defective lugs and glands from the Central AC Plant LT panels complete and Supply and Fixing new lugs and glands suitable sizes and re-connection complete LT panel and including the following works :- (a) Writing of incoming and outgoing MCCBs/MCBs.(where to supply/ feeding)(b) Cleaning of LT panels complete with help of Blower with cleaning materials.(c) Replacement of LT panel board foundation nuts, bolts and washers etc., (d) Replacement of interconnection of LT panels complete with suitable size copper cable complete.(e) Tightening of all incoming and outgoing cables from the MCCBs.(f) Replacement of un-serviceable MCCBs/MCBs/ Contactors/Relays /HP/ LP cutouts/Single Phase Preventors/ OLPs etc.,Note :-The Spares mentioned in Item No 1(f) measured and paid separately under respective items below. 2 (g)LT Panels locations are under :-(i) NC-I, (ii) NC-II, (iii) NC-III, (iv) P-11, (v) KRC (vi) EMI/EMC (vii) COVETEC (viii) SIMULATOR. 3 Disconnecting and taking down unserviceable MCCB any capacity and any pole complete without damaging anyother eqpts. 4 Supply and Fixing of following MCCB with rating and breaking capacity and pole with thermomagnetic release and terminal spreaders in existing cubicle panel board including drilling holes in cubicle panel, making connections, etc. as required. 5 MCCB 400 Amps, 35 KA, 415 Volts, 3pole, 6 MCCB 315 Amps, 35 KA, 415 Volts, 3pole 7 MCCB 125 Amps, 16 KA, 415 Volts, 3pole 8 MCCB 63 Amps to 100 Amps, 16 KA, 415 Volts, 3pole 9 Disconnecting and taking down unserviceable MCB any capacity and any pole complete without damaging anyother eqpts. 10 Supply and Fixing 415V, Three pole, 10KA C curve miniature circuit breaker (MCB) of following poles and current carrying capacity in the LT Panels complete with connection with lugs,testing and commissioning. 11 MCB 16 to 32 Amps, 12 MCB 63 Amps, 13 MCB 100 Amps, 14 Supply and Fixing 415V, double pole, 10KA C curve miniature circuit breaker (MCB) of following poles and current carrying capacity in the LT Panels complete with connection with lugs,testing and commissioning. 15 MCB 16 to 32 Amps, 16 MCB 40 to 63 Amps, 17 Supply and Fixing 415V, single pole MCB 6 to 32 Amps, 10KA C curve in the LT Panels complete with connection with lugs,testing and commissioning. 18 Supply and Fixing 415V, four pole,10KA B curve miniature circuit breaker (MCB) of following poles and current carrying capacity in the DB complete with connection testing and commissioning. 19 MCB 16 to 32 Amps, 20 MCB 40 to 100 Amps, 21 Disconnecting and taking down unserviceable Contactors, OLP, Single phase preventors,push button, Indicator lamps, Selector switch, Voltmeter, Ammer, OLPs Connectors, etc., of any capacity and any pole complete without damaing anyother eqpts. 22 Supply and Fixing of Power Contactor 32 Amps, 415 volts, with integrated auxillary contacts, Power terminals screw terminals complete with both ends suitable size copper lugs complete. 23 All as per item No 10 here-in-before Capacity 38 Amps 24 All as per item No 10 here-in-before Capacity 45 Amps 25 All as per item No 10 here-in-before Capacity 63 Amps 26 Supply and Fixing of Single Phase Preventor, 415volts, including both end connections complete. 27 Supply and Fixing of Push Button with NO/NC 28 Supply and Fixing of Indicator Lamps (Red/ Yellow/ Blue) 29 Supply and Fixing of Selector Switch including both end connection complete. 30 Supply and Fixing of Voltmeter, three phase, digital type, suitable for range (0-500) volts with selector switch 31 Supply and Fixing of Ammeter, digital type, three phase, 200 amp with suitable CTs complete 32 S&F in replacement ofDirect-On-Line starter in sheet metal enclosure Type MK suitable for motor rating upto 7.5HP, 415V, 50Hz relay range 13-20 A complete all as specified and directed by Engineer-in-Charge. Make : BCH ,Cat part No :NAKLEN or Equivelant make 33 Supply and Fixautomatic star delta starter suitable for pump set, 3 phase AC motor capacity 7.5 ,built in overload relay,single phase preventor,AC3,4pole contactor,415 volt in heavy duty deep drawn sheet metal box all as specified and as directed. Make :BCH,Cat part No :NASAJLEN or Equivelant make. 34 Material and labour for earthing complete with GI plate electrode 600x600x6mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of plate not less than 1.5m below ground level connected to GI earth strip of size 32 X 6 mm by means of bolts, nuts, washers of galvanized all as shown in electrical plate No.3 of SSRPart-I including necessary excavation and earth work.PCC 1:3:6 type C1 chamber, RCC cover in 50mm thick 1:2:4 type B1 with 8mm CTD 100mm centre to centre with suitable handle, watering pipe 20mm dia medium grade pipe with funnel and 40mm dia light grade as protection pipe, charcoal, salt etc connected to earthing test point all as specified including testing and commissioning on completion all as specified and as directed. 35 M&L of Wiring for circuit/submain wiring alongwith earth wire with the following sizes of FR PVC insulated copper conductor, single core cable in surface/ recessed as required size 4 runs of 16 sqmm complete and including both end suitable size copper lugs complete. 36 M&L for general service of package/ cassette type AC unit 4/3Ton capcity installed at ground/first floor by cleaning outdoor and indoor unit areaby blower, cleaning condersor coil unit ,Indoor cooling coil unit with water/chemicals, filter cleaning , cheking electrical wiring, tighting wires apply proper tags, replace copper lugs,insulation tape over bare terminal and trouble shooting for any gas leakage with nitrogen and arresting leakage, recharging with required qty of R22 gas incl necessary welding works to maintain required temperature and testing complete all as specifed and directed. Note: Servicing of ACs shall be carried once in three month per AC Unit. (ii)Serive record to be submitted for claming payment and rate incl of service slip etc. 37 Supply only R22 gas refrigerant 38 Supply only R-410a/R-407 gas refrigerant 39 Supply and Fix copper pipe 1/4 22SWG 40 Supply and Fix copper pipe 1/2 22SWG 41 Supply and Fix condensate drain pump 230V suitable for cassette AC 4/3Ton complete all as specifed. 42 Supply and Fixcopper cooling coilsuitable for R22 gas. rated working pressure 150-300PSI, 50-90 degree suitable for cassette AC 4Ton complete all as specifed. 43 Supply and Fixcopper condensor coil suitable for R22 gasrated working pressure 150-300PSI, 50-90degree suitable for cassette AC 4Ton complete all as specifed. 44 Supply and Fixfan blade suitable for 4Ton casstte AC outdoor unit . 45 Supply and Fixfan blade suitable for 3Ton casstte AC outdoor unit . 46 Supply and Fix Indoor unit blower motor suitable for cassette AC 4Ton complete all as specifed. 47 Supply and Fixindoor unit fan motorsuitable for cassette AC 3Ton complete all as specifed. 48 Supply and Fix Outdoor unit fan motorsuitable for cassette AC 4Ton complete all as specifed. 49 Supply and FixOutdoor unit fan motor suitable for cassette AC 3Ton complete all as specifed. 50 Supply and Fixsensor for 3.0/ 4.0 ton cassete type cooling coil control. 51 Supply and Fix sensor for 3.0/ 4.0 ton cassete type room temperature control 52 Supply and Fixsensor for 3.0/ 4.0 ton cassete typefloat and manual mode control 53 Supply and Fix three phase bakalite cable connector 10 way 40 Amps capacity. 54 Supply and FixPCB suitable for 4.0/3.0 Ton cassete type AC suitable for as per site requirement all as directed 55 Supply and Fixreplacement running capacitor 50 mfd 415 Voltall as directed. 56 Supply and Fix starting capacitor 80/100mfd 415 Volt all as directed. 57 Supply and Fix starting relay suitable for 3.0 /4.0 Ton cassete type A/C all as directed. 58 Supply and Fix thermostat for 3.0/4.0 Ton Cassete type AC all as directed. 59 Supply and Fix wiring kit suitable for 3.0 / 4.0 Ton cassete type A/C all as directed 60 Supply and Fixdischarge valve for 4 TR cassete type Air conditioner 61 All as per above item No 48 but 3 TR Capacity. 62 Supply and FixSuction valve for 4 TR cassete type Air conditioner 63 All as per above item No 50 but 3 TR Capacity. 64 Supply and Fixexpansion valve for 4 TR cassete type Air conditioner 65 All as per above item No 52 but 3 TR Capacity. 66 Supply and Fixdriyer unit for 4 TR cassete type Air conditioner 67 All as per above item No 54 but 3 TR Capacity. 68 Supply and Fixfilter unit suitable for Indoor unit cassettetype 3/4Ton complete. 69 Supply and Fixand fix Pvc pipe size 25mm suitable for cassete type AC drain all as directed 70 M&L for taking down u/s Scroll compressor 4Ton capacity incl disconnect suction and discharge connections, transporting to workshop dismantle the unit by welding cut the outer frame, remove the burnt winding and rewind with super enameld copper wire incl insulation varnishing etc assemble the outer frame by welding,brazing and testing unit tranporting fixing in outdoor unit and testing the AC unit complete all as specifed and as directed.
