ESSENTIAL REPAIR REPLACEMENT TO THE AC PLANTS INSTALLED

Amount

Supply and fix in repairs Auto capacity regulator solenoid valve including connecting of interlock wiring, nut, bolt, washer etc all as specified and directed by Engineer-incharge. Make : Rotex, 220V, 50Z or equivalent in Avcon, Accel cat part No 50

Supply and fix in repairs Coil for solenoid valve SP-180 cat part No 50-A of connecting into liquid line including interlock wiring, nut, bolt , washer etc all as specified and directed by Engineer-in-Charge. Make : Accel, Sporlan, Rotex

Supply and fix in replacement of thermostatic expansion valve of suitable capacity HVE size for keep a constant superheat or refrigerant level situation in refrigeration system based on evaporator outlet temperature and pressure complete all as specified and directed.

Supply and fix in replacement of thermostatic expansion valve of suitable capacity MVE size for keep a constant superheat or refrigerant level situation in refrigeration system based on evaporator outlet temperature and pressure complete all as specified and directed.

Material and labour for descaling of complete condenser units for central/ package type AC plants quarterly of following capacities by means of adding descaling chemical solution (HCL) or equivalent into the cooling tower sump as per requirements, and running the plant pump continuously till all the scale of pipes/shell are removed including removing side covers of condenser and cleaning the water tubes by means of nylon brushes till the scaling is removed and re fixing of covers including replacement of neoprene rubber gasket and refixing pipe connection etc. all as specified and directed to complete satisfaction of engineer-in-charge:- (a) condenser unit of AC plant up to 60 TR

(b) condenser unit of AC plant 60 TR to 120 TR

Supply and Fix in repairs of following Motor and Voltage protective device as per existing make and type complete all as specified and directed:- (a) MVPD EC 5-30 A

(b) MVPD EC 30-220A

(c) Micro VPD(Split) 360-500V AC

Supply and fix Microprocessor Scroll Controller for compressor of 11-20 TR Capacity including removing unserviceable of Microprocessor complete all as specified and directed.

Supply and fix Microprocessor Scroll Controller for compressor of 21-30 TR Capacity including removing unserviceable of Microprocessor complete all as specified and directed.

Supply and fix Microprocessor Scroll Controller for compressor of 31-40 TR Capacity including removing unserviceable of Microprocessor complete all as specified and directed.

Supply and fix Microprocessor Scroll Controller for compressor of 41-78 TR Capacity including removing unserviceable of Microprocessor complete all as specified and directed.

Supply and fix Microprocessor Scroll Controller for compressor of 79-100 TR Capacity including removing unserviceable of Microprocessor complete all as specified and directed.

Supply and fix in replacement of Single phase preventer type SPP VSP3 3 phase, 415 Volts, 50 Hz AC ,complete all as specified and directed. Make:- Minilec or equivalent as approved by GE

Supply and fix in replacement of CVT for chiller controller power supply 3 phase, 415 Volts, 50 Hz AC Make Minilec or equivalent all as specified and directed.

Supply and fixing of connector in HVAC panel 6 Amp to 35 Amp complete all as specified and directed.

Material and labour for repair of condenser pump/ chiller pump any type including replacement of impeller and bearings both side , replacement of main shaft, outer body of the pump of following capacities complete all as specified as per manufacturer's instructions and directed by Engr in charge:- (a) chiller/condenser pump of Capacity 10 HP

(b) chiller/condenser pump of Capacity 7.5 HP

(c) chiller/condenser pump of Capacity 5 HP

Supply and Fix in replacement MS ERW tubing medium grade 80mm dia for condenser water circulation pipes complete all as specified and directed. Make- JINDAL/ PRAKASH SURYA/TATA

Supply and Fix in replacement MS ERW tubing medium grade 100mm dia for condenser water circulation pipes complete all as specified and directed. Make- JINDAL/ PRAKASH SURYA/TATA

Material and labour for Nitrogen leak test entire system of the AC plant of Cap upto 150 TR with Nitrogen gas. If found any leakage or reduction in the scale of pressure shall located and arrest the leakage immediately by soldering or an appropriate measure are to be taken to top the leakage permanently complete all as specified & directed by Engr-in-Charge.

Cleaning the cooling tower by applying wire brush, washing powder and other solvent by removing the deposited impurities such as silt, dust particles mud/ sand inside the dome and around the fins, cleaning of base tray & grills, pot stainer, main shaft etc and other connected items, servicing of fan motor including changing of bearings and greasing refixing the fan, frill & top cover including testing commissioning after reassembling complete including painting all as directed by Engr-in-charge up to 35 TR all as specified and directed by Engineer-in-Charge:- (a) cooling tower of capacity up to 35 TR

(b) cooling tower of capacity 35 TR to 65 TR

(c) cooling tower of capacity 66 TR to 250 TR

Supply and Fix in replacement of butter fly valve of 65 mm dia, cast iron body, integrally molded close and body construction with hand lever, operated and rating of PN 10 with thermal insulation as per requirement of condenser and chilled water line complete all as specified and directed . Make: Advance/Castle/Intervalve/ SAAPL.

Supply and Fix in replacement of butter fly valve of 80 mm dia, cast iron body, integrally molded close and body construction with hand lever, operated and rating of PN 10 with thermal insulation as per requirement of condenser and chilled water line complete all as specified and directed . Make: Advance/Castle/Intervalve/ SAAPL.

Supply and Fix in replacement of butter fly valve of 100 mm dia, cast iron body, integrally molded close and body construction with hand lever, operated and rating of PN 10 with thermal insulation as per requirement of condenser and chilled water line complete all as specified and directed . Make: Advance/Castle/Intervalve/ SAAPL.

Supply and Fix in replacement of gun metal gate or globe valve of 15 mm dia with iron wheel head screwed both ends for iron pipes complete all as specified and directed.

Supply and Fix in replacement of gun metal gate or globe valve of 20 mm dia with iron wheel head screwed both ends for iron pipes complete all as specified and directed.

Supply and Fix in replacement of 15 mm dia ball brass valve , high pressure, with polythene float and fly nuts complete, screw for iron pipe or brass ferrule and mixed complete all as specified and directed.

Supply and Fix in replacement of 20 mm dia ball brass valve , high pressure, with polythene float and fly nuts complete, screw for iron pipe or brass ferrule and mixed complete all as specified and directed.

Supply and fix in repairs cooling tower Fan Assembly with low speed fan with noise level not exceeding 75 dBa made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for 61 to 120 TR capacity AC plants.

Supply and fix in repairs cooling tower Fan Assembly with low speed fan with noise level not exceeding 75 dBa made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for upto 60 TR capacity AC plants. Note For Item No 27 to 28- 1. Fan speed shall not exceed 60 MPS. Outlet velocity of air shall not be less than 610 mtrs/ min 2. Fan shall be protected by a Fan guard and bird screen of galvanised steel construction. 3. G SS/ SS 304 fan guard shall be provided over the fan motor for protection against rain water.

Material and labour for taking out all old unserviceable PVC fills from cooling tower of capacity upto 100 TR and supply and fix in replacement of eliminator of cooling tower upto 100 TR complete all as specified and directed.

Material and labour for taking out all old unserviceable PVC fills from cooling tower of capacity above 100 TR to 200 TR and supply and fix in replacement of eliminator of cooling tower101TR 200 TR complete all as specified and directed.

Dismantling and removing old U/S compressor sealed unit of Scroll Type Compressor carefully and supply, installation, testing new sealed compressor unit of capacity 12.5 TR Model No SZ185S4RC of Make Blue Star/ Danfoss or equivalent complete with all standard accessories as per existing model installed at AC plant. Note:- (i) Sealed unit shall be purchased from authorised dealers/agents (ii) Cost of labour, fixing & T & P shall be deemed to include in the quoted rate of this item. (iii) Unit rate quoted shall include for the necessary electrical check i.e checking of panel wiring to run the compressor smoothly. (iv) Before opening/ dismantling the compressor the freon gas to be taken in empty cylinder by the help Ice or as directed by Engineer-in-Charge.

Material and labour for rewinding of induction motor 900RPM, 3 phase, 50 Hz, 415 volt of compressor motor and AHU Blower , chiller , condenser motor comprising of the following activities for induction motor of following capacities complete all as specified and directed as per manufacturer's instructions. (i) Disconnecting and removing the electric motor from installed position and loading unloading, transporting to authorised/approved work shop (ii) Dismantling existing burnt winding from the motor and rewinding complete with super enameled copper winding wire of existing gauge including all material such as insulated paper sleeves tape varnish etc complete for class F insulation and including shaft metalising, bearing cover sieving , necessary replacement of cooling fan, nut-bolt etc (iii) Loading, unloading and transporting motor & reinstalling in position and in alignment including electric connection commissioning and testing in actual working condition for 8 hours continuously to check the performance on full load and designed RPM to the complete satisfaction of Engr-in-Charge all as specified and directed (iv) Material and labour for replacement of 02 Nos of suitable size of ball bearing of existing size of the following type and capacity of induction motor :- (a) Induction Motor of Capacity 15 HP

(b) Induction Motor of Capacity 10 HP

(c) Induction Motor of Capacity 7.5 HP

(d) Induction Motor of Capacity 5 HP

(e) Induction Motor of Capacity 3 HP

(f) Induction Motor of Capacity 2 HP

Supply and fix in replacement electronic timer 800SQA working voltage 240V 50 Hz all as specified and directed. Make: M/s Selec/GIC/Siemens/ M/s Havells

Supply and fix in replacement Air break contactor Model No 3TS3500-0A with Auxiliary 3TX400--2A 1 NC 415 V, 50 Hz, AC complete all as specified and directed. Make: M/s L&T / M/s Havells/ Siemens/ Standard / legrand

Supply and fixing in replacement MCB SP 5 To 32 amp rating 240V, 10KA 'C' curve complete all as specified and directed.

Supply and fixing in replacement MCB SPN 32 AMP rating 240V, 10KA 'C' curve complete all as specified and directed.

Supply and fixing in replacement MCB SPN 40 to 63 AMP rating 240V, 10KA 'C' curve complete all as specified and directed.

Supply and fixing in replacement MCB TP 40 To 63 AMP 415V 10KA 'C' curve complete all as specified and directed.

Supply and fix in replacement MCCB 3 Pole, 415 V, fixed type, 25 to 100 Amps with breaking capacity 16 KA all as specified and directed.

Supply and fix in replacement MCCB 3 Pole, 415 V, fixed type, 25 to 400 Amps with breaking capacity 36 KA all as specified and directed.

Supply and fix in replacement MCCB 4 Pole, 415 V, Adjustable type, 160Amps with breaking capacity 36 KA all as specified and directed.

Supply and fix in replacement MCCB 4 Pole, 415 V, Adjustable type, 400Amps with breaking capacity 36 KA all as specified and directed.

Supply and fix in replacement power contactor 3 pole, type MNX 12, 1NO + 1 NC aux contracts with standard coil voltage 240 volts, rating 30 Amp of make M/s L&T / M/s Havells/ Siemens/ Standard / legrand all as specified and directed.

Supply and fix in replacement power contactor 3 pole, type MNX 18, 1NO + 1 NC aux contracts with standard coil voltage 240 volts, rating 30 Amp of make M/s L&T / M/s Havells/ Siemens/ Standard / legrand all as specified and directed.

Supply and fix in replacement power contactor 3 pole, type MNX 22, 1NO + 1 NC aux contracts with standard coil voltage 240 volts, rating 32 Amp of make M/s L&T / M/s Havells/ Siemens/ Standard / legrand all as specified and directed.

Supply and fix in replacement power contactor 3 pole, type MNX 32, 1NO + 1 NC aux contracts with standard coil voltage 240 volts, rating 55 Amp of make M/s L&T / M/s Havells/ Siemens/ Standard / legrand all as specified and directed.

Supply and fix in repairs Sprinkler assembly complete with Header Nozzles made out of Galvanised iron suitable to fix in cooling towers of 61 TR and above Capacity AC plant.

Supply and fix in repairs Sprinkler assembly complete with Header Nozzles made out of Galvanised iron suitable to fix in cooling towers of 51 to 60 TR capacity AC plants.

Supply and fix in repairs Sprinkler assembly complete with Header Nozzles made out of Galvanised iron suitable to fix in cooling towers of below 30 TR capacity AC plants.

Taking down old unserviceable duct insulation, cleaning the duct surface with steel brush removing dirt/dust and making it free of mill scale , greases and foreign matter. Material and Labour for painting the surface with two coats of bituminous paint taking special care over non galvanised part , applying rubber based adhesive CRPX compound manufactured by Shalimar Tar product on ducts sticking the fiber glass section in the form of pad with the density 24 Kg/Cum shall be fixed tightly to the surface & all joints to be sealed properly by using sealing compound, cover with aluminium foil kraft paper laminate with minimum overlap of 50mm, cover with Glass wool seal each lap joint with self adhesive aluminium foil tape 50mm wide , complete all as specified and directed by Engineer-in-Charge.

Taking down old unserviceable duct insulation, cleaning the duct surface with steel brush removing dirt/dust and making it free of mill scale , greases and foreign matter. Material and Labour for painting the surface with two coats of bituminous paint taking special care over non galvanised part , applying rubber based adhesive CRPX compound manufactured by Shalimar Tar product on ducts sticking the fiber glass section in the form of pad with the density 24 Kg/Cum shall be fixed tightly to the surface & all joints to be sealed properly by using sealing compound, cover with aluminium foil kraft paper laminate with minimum overlap of 40mm, cover with Glass wool seal each lap joint with self adhesive aluminium foil tape 40mm wide , complete all as specified and directed by Engineer-in-Charge.

Supply and fixing wire netting of galvanised steel wire 24 gauge fixed with tinned tacks of wire staples mesh size 12mm aperture over entire duct insulation with 50mm overlap for preventing rat bites complete all as specified and directed by Engineer-in-Charge.

Taking down old rectangular square duct including insulation, wire net & all connected accessories and making good disturbed surfaces as per existing, complete all as specified and directed by Engineer-in-Charge.

Supply and erecting factory fabricated Rectangular square Duct made out of 24 gauge GI sheet in L shaped hollow profile including all accessories such as corner, carriage bolt hangers, gasket and sealing the longitudinal joints with and including approved sealant complete all as specified and directed by Engineer-in-Charge.

Taking down old unserviceable insulation over the chiller pipe line, cleaning water pipe surface with steel brush removing dirt/dust, Material and labour for chilled pipe line insulation by applying a coat of zinc chromite primer & applying two coats of cold setting adhesive compound (CRPX) on pipes for sticking the insulation bonded mineral wool of density 144 Kg/cum, 50mm thickness tightly pressed on the pipe upto 250mm dia seal all the joint with adhesive compound warp the insulation surface by using one layer of polythene sheet 50mm wide PVC tape covering the entire surface with chicken mesh , of density 144 Kg/Cum and cover 26 gauge aluminium GI cladding of approved colour & cover with Glass wool complete all as specified and directed by Engineer-in-Charge.

Taking down old paint over the iron Brackets /Iron Cantilever Beams / Rail sections / Motors and Pumps, cleaning the surface with steel brush removing dirt/dust, Material and labour for applying a coat of zinc chromite primer & apply a two coats of black synthetic enamel paint around the body including Pump, Motor every joints, corners complete all as specified and directed by Engineer-in-Charge.

Labour only for charging of refrigerant gas R-407C/ R134/R22 in sealed cylinder after making system leak proof complete all as specified and as directed by Engr-in-charge. Note: Refrigerant gas will be supplied by the dept.

Supply and fixing of filter drier for chiller as per existing make and model complete all as specified and directed.

Supply and fix for air terminals of supply / return / exhaust air grilles /of powder coated aluminium with aluminium volume control dampers with anti smudge ring and removable core complete all as specified and as directed by Engr-in-charge.

Servicing of cooling coils and air filters of AHUs installed at air conditioning plant by removing air filters and fixing ack after cleaning with air blower and water and cleaning agent , cleaning of cooling coil with wire brush and air blower and water spray pump after spraying scale gun or equivalent chemical suitable for aluminium fins and straighten the fins of cooling coil by using suitable brush for capacity upto 10000 CFM.

Servicing of cooling coils and air filters of AHUs installed at air conditioning plant by removing air filters and fixing ack after cleaning with air blower and water and cleaning agent , cleaning of cooling coil with wire brush and air blower and water spray pump after spraying scale gun or equivalent chemical suitable for aluminium fins and straighten the fins of cooling coil by using suitable brush for capacity 10001 CFM to 20000 CFM.

Supply and fix in replacement V Belt of Make : Nirlon, Fenner, Ecodrive of following sizes :- (a) V Belt A-58

(b) V Belt A-28

(c) V Belt A-48

(d) V Belt A-79

(e) V Belt A-62

(f) V Belt A-56

(g) V Belt B-58

(h) V Belt B-73

(j) V Belt B - 68

(k) V Belt B - 61

Material and labour for repairs to condenser of AC plant by blocking the damaged/corroded tubes involving following activities :- (i) Disconnecting the side covers of the condenser from their existing positions. (ii) Leakage testing of the condenser using pressurised nitrogen gas and finding the leaked tubes. (iii) Blocking the damaged/leaked tubes by brass plugs. (iv) Re-fixing the side covers of the condenser and the condenser valves from their existing positions with new nuts, bolts, rubber gasket and washers etc and painting the surface with approved shade of synthetic enamel paints for following capacities of condenser :- (a) up to 25 TR Capacity

(b) 26 to 50 TR capacity

(c) 51 to 130TR capacity

Supply and fix regenerable coarse type, dust proof for following sizes:- (a) AHU filter of size 60cm x 60 cm x5 cm

(b) AHU filter of size 60cm x 50 cm x 5 cm

(c) AHU filter of size 60cm x 40 cm x 5 cm

(d) AHU filter of size 60cm x 30 cm x 5 cm

Supply and fix in repairs of Chilled water sensor as per existing make and type complete all as specified and directed

Supply and fix in replacement of flow switch as per existing make and model complete all as specified and directed.

Material and labour in repairs Strip heater finned 2 inch wide alluminised steel fins of 415 volt 1.5 to 3 KW capacity to match with the existing

Supply and fix in repairs pressure gauge of range -30-150 of make M/s Fiebig/ M/s Uday or equivalent all as specified and directed.

Supply and fix in repairs pressure gauge of range 0-200 of make M/s Fiebig/ M/s Uday or equivalent all as specified and directed.

Supply and fix in repairs pressure gauge of range 0-300 of make M/s Fiebig/ M/s Uday or equivalent all as specified and directed.

Supply and fix in repairs in repair on-off push button pendants with elements red/green/orange all as specified and directed. Make: MIMIC/ L&T/ LEGRAND / HPL

Supply and fix in replacement of Sensor complete and testing on completion complete all as specified and as directed.

K A ELECTRIC CO (BID ID -3065754)

industrial suppliers (BID ID -3065756)

AIRDOT ENGINEERING (BID ID -3065585)

ENJOY (BID ID -3066458)