REPAIRS AND MAINTENANCE OF CENTRAL TYPE AC PLANT CHILLER PLANT DUCTILE ACS AND SPLIT ACS AT CASDIC AND RTC UNDER GEI RD EAST BANGALORE

Amount

Materail and labour for Preventive maintenance of 14 nos AHU cooling coil by taking out pre filter frame, cleaning of cooling coil and cleaning of AHU and cleaning of dampers refixing all removed parts, checking the operations of all safety devices, cleaning of electrical contacts, checking the electric circuits, testing, commissioning etc installed at CASDIC all as directed by Engineer - in - Charge.

Dismantling 1 nos of screw compressor from 250 TR capacity chiller carefully with using hydraulic jack & chain pulley, putting dummy plates to suction & discharge line & transporting to authorized workshop for repair, etc and refixing the same in the original place all as directed at CASDIC

Dismantling of burnt out stator from screw compressor body, cutting, opening of burnt-out winding, rewinding with the same gauge of copper conductor of F class oil proof insulation applying one coat of varnish and kept at the electric oven and heated for 48 hours and refixing the same in the original place all as directed. at CASDIC

Pressure Testing each circuit of carrier make 30GX model chiller for refrigerant leak by evacuating refrigerant gas from the circuit into the empty cylinder, leak testing of the circuit with nitrogen (N2) pressure by separating the entire system like low side, high side compressor condensers and rectifying the leakage vacuuming re-charging of evacuated refrigerant gas and testing complete all as directed. Note: Topping up of gas will be measured separately for CASDIC

M & L for Complete Overhauling of one 06NA Compressor in 250 TR chiller unit by opening the compressor end plate, removing the gear assembly with gear puller, removing the hydraulic chamber, removing the twin screws using puller, removing the bearing sets, O rings, rotor, terminal bolts and stator. Clean the entire mechanical parts with approved cleaning agent and oil the parts. Checks all the mechanical parts for wear & tear and replace if required. Reassemble the dismantled parts carefully by using required tools and tackles. Refix the twin screws and checks the alignment of screws for smooth operation. Refix the stator along with terminals, fix the gear assembly and hydraulic chamber. Checks the alignment of screws and gear assembly for smooth rotation. Refix the endplates and tightened the bolts and complete the overhauling all as per standard procedure.

Dismantling of winding from defective condenser fan motor and rewinding, with the same gauge of copper conductor and kept at electrical oven and heated for 48 hours and refixing the same in original place and all as directed. at CASDIC.

M & L for General servicing and preventive maintenance of the 250 TR chiller unit. Pressure cleaning of the condenser coil, leak testing of the entire refrigeration circuit, checking the operations of all safety devices, cleaning of electrical contacts, checking the electric circuits all as directed at DARE

M & L for Painting with one coat of enamel paint for complete central type AC plant of capacity 250TR completely to all connected items of the plant with different tent colour including motor of blowers/pipes lines with different colour all as directed by Engr-in-Charge.

Supply and Fixing of dual core internal oil filter suitable for 250 TR capacity chiller unit of carrier at CASDIC Make. Filtration Level - 3 µ, No. 06NA660028S

Supply and Fixing of external oil filter suitable for 250 TR capacity chiller unit of carrier at CASDIC Make. Filtration Level - 10 µ. No. 30GX417132E

Supply and Fixing of drier suitable for 250 capacity chiller liquid line. No. XW12EA003 at DARE

Supply and Fixing of Oil level switch suitable for 250 capacity chiller at CASDIC

Supply & Replacement of Carrier make HP transducer. No. OP12DA039EE

Supply & Replacement of Carrier make LP transducer. No. OP12DA040EE

Supply & Replacement of Carrier make Oil pressure transducer. No. OP12DA040EE

Supply & Replacement of Carrier make Temperature Sensor. No. 30RB 660 036

Supply and replacement of internal bearings suitable for carrier 6 NA screw compressor by opening the compressor endplate, removing the gear assembly with a gear puller, removing the hydraulic chamber, removing the twin screws using a puller, removing the bearing sets, O rings, rotor, terminal bolts, and stator. Clean the entire mechanical parts with an approved cleaning agent. Replace the bearing sets as per the standard procedure. Reassemble the dismantled parts carefully by using the required tools and tackles. Refix the twin screws and checks the alignment of screws for smooth operation. Refix the stator along with terminals to fix the gear assembly and hydraulic chamber. Checks the alignment of screws and gear assembly for smooth rotation. Refix the endplates and tightened the bolts all as per the standard procedure for CASDIC

Supply and topping up of compressor oil suitable for carrier make screw Compressor oil (SW 220 grade Synthetic Screw Compressor Oil) for at CASDIC

Supply and charging of 134A refrigerant gas for carrier screw chiller at a CASDIC

Supply & Replacement of defective contactor for the condenser fan motor. (Siemens make 3RT1016 Contactor, 3pole, 10 Amps) for Carrier GX model Chillers at CASDIC

Supply & Replacement of defective bearings of the condenser fan motor. No. 6204, 6205 at CASDIC

Supply & Replacement of defective contactor with new contactor 160 A, 3 Pole . (Make: Siemens 3TF51)

Supply & Replacement of defective contactor with new contactor 100 A, 3 Pole . (Make: Siemens 3TF48)

Supply & Replacement of defective contactor up to 50A, with new contactor. (Make: L&T,Siemens, ABB)

Supply & Replacement of defective EXV board of 30GX model Carrier make screw chiller by Isolation the power to the Chiller unit, Remove the connections to the EXV board carefully, remove the EXV board from the chiller control panel, Fix the new EXV board carefully and reconnect the connections to the EXV board complete all as per the standard procedure. at DARE .

Supply & Replacement of defective Flow Sensor of 30GX model Carrier make screw chiller by Isolating the Butterfly valve, Remove the electrical conection carefully, remove the Flow sensor from the chilled water pipe line, Fix the new flow sensor carefully and reconnect the electrical connections to the flow sensor complete all as per standard procedure at CASDIC

Supply & Replacement of defective Electronic Expansion valve of 30GX modle carrier make chiller by isolation the power to the chiller unit, Removing the connections of Electronic expansion valve carefully, isolate the refrigerant by closing the services valve, de-braze and removing the valve from ckt, fixing of new valve in the ckt with brazing,pressure testing the ckt, reconnecting the connections to the valve complete all as per standard procedure at CASDIC

Supply & Replacing of defective 22kw VFD of chiller water pump by isolation the power to pump panel removing the connections to VDF carefully, fix with new VDF reconnect the connections and re-commission the VDF al as per standard procedure, Make:- SEIMENS, Modle SED222/32B ,or equalent at CASDIC

Supply and replacement of removable type factory made metallic pre-filter of 20 microns of standard size with GI frame both side including removing of unserviceable metallic pre-filters all as directed. Make: AEROSOL/MAF/DYNA/JOHNFLOWER

Supply and replacement of factory made High Performance Bag Filters of 95% down to 5 micron of standard size with multiple-pockets & self supporting filter bags with MS/ GI/Anodised Aluminium Frame suitable for central air conditioning plant including replacement of bolt nuts and taking out unserviceable Bag filters complete all as directed by Engineer-in-charge.Make: Aerosol/ John Flower/ Dyna/ Sri Sai

Disconnecting and removing of the induction motor from the existing position of the following capacity of any make checking of the motor for its serviceability and transporting to workshop, opening up, cutting and removing of the burnt out winding, rewinding with same gauge of copper conductor insulating, varnishing, greasing etc., complete, reassemble, testing at work shop bring back to site re-fixing back in the original position reconnecting, testing and commissioning complete all as directed.

Above item no 31 but size 7.5HP to 10 HP capacity induction motor

Above item no 31 but size 5 HP to7.5 HP capacity induction motor

Above item no 31 but size 10 HP to 20 HP capacity induction motor

Disconnecting and removing of the Pump from the existing position of the following capacity of any make checking of the motor for its serviceability and transporting to workshop, opening up, cutting and removing of the burnt out winding, rewinding with same gauge of copper conductor insulating, varnishing, greasing etc., complete, reassemble, testing at work shop bring back to site re-fixing back in the original position reconnecting, testing and commissioning complete all as directed.

Above item no 35 but size 20 HP to 30 HP capacity Pump

Supply and fixing of bearing of the following capacity induction motor including removing of unserviceable bearing all as specified and as directed.

Above item no 37 but size 7.5HP to 10 HP capacity induction motor

Above item no 37 but size 5 HP to7.5 HP capacity induction motor

Above item no 37 but size 10 HP to 20HP capacity induction motor

Supply and fixing of bearing of the following capacity Pump including removing of unserviceable bearing all as specified and as directed.

Above item no 41 but size 20HP to 30 HP capacity Pump

Supply and fix overload relay for following capacity including taking down unserviceable overload relay etc all as directed

Above item no 43 but size Up to 32 Amps

Above item no 43 but size 63 Amps to 100 Amps

Supply and fix water pressure gauges of 4 or 2” dia of the following range with necessary flare nuts, adopter including removing of the unserviceable all as directed. Make: KI/FEIBIG/H GURU. 0-150 PSI or equivalent in Kg/cm2

Supply and fix V-belts of the following sizes (in inches) all as directed including removing unserviceable belt. Make : FENNER/DUNLOP/ VITTON/PIX

Up to B-120

Up to C-120

Up to A-36

Supply and fix syphon connection 15 mm dia made out of SS pipe suitable for fixing of pressure gauge including ½ an inches dia stop valve and taking down unserviceable syphon connection etc all as directed.

Supply and fix water pressure cut out 0-8 kg pressures 15 mm dia including taking out unserviceable water pressure gauge etc all as directed.

Supply and Replacing of defective VFD up to 15 Kw of AHU panel removing the connections to VFD carefully, fix with new VFD reconnect the connections and re-commission the VFD all as per standard procedure, Make:- SEIMENS or equalent

15 Kw VFD

11 Kw VFD

Supply and replacing of defective mixing valves of AHU, pumps, removing carefully, fix with new mixing valves all as per standard procedure.

2 way mixing valve with Actuator Make: Siemens/Johnson Controlls

3 way mixing valve with Actuator Make: Siemens/Johnson Controlls

Supply & Replacement of door beeding for Carrier Chiller control panel all as directed.

M&L for servicing including cleaning of condenser coil fins with mild detergent, cleaning of indoor unit and descaling of condensor coil for split type AC of any make/capacity after taking down the outdoor unit and refixing at the existing location or any other new location all as specified and as directed by Engr-in-charge. NOTE: (i) The servicing of one split AC (one indoor unit + one outdoor unit) will be measured as one job.

(ii) Any minor complaints such as lekage of water, abnormal noise and any electric loose connection etc raised by user after carrying out servicing shall be rectified by the contractor without any extra cost to the Govt.

(iii) The rate quoted for servicing shall be inclusive of attending complaints and keeping the AC in working condition during the entire contract period and further one year defects liability period

S&F in repair PCB kit complete with remote as per existing size 1.5 to 8.5 TR. Make : Voltas/LG/Samsung/Hitachi/Videocon/Carrier

S&F in repair Scroll compressor suitable for ductable AC 5.5/8.5 TR . Make – Emerson / Tecumech

S&F in repair Rotary compressor suitable for Split AC of capacity 1.5 TR. Make – Emerson / Tecumech

S&F Rotary compressor suitable for Split of capacity 2 TR .Make – Emerson / Tecumech

S&F in repair Reciprocating compressor suitable for Split AC of capacity 1.5 TR. Make - Emerson / Tecumech

S&F in repair Reciprocating compressor suitable for Split AC of capacity 2 TR, Make - Emerson / Tecumech

Supply & filling Refrigerant gas as per existing type for Split AC any size/capacity

Supply & filling Nitrogen gas for vaccum/leakage test for Split AC any size/capacity

M&L for Disconnecting the electrical connection of burnt out electric Indoor /outdoor motor of any make/model incl transportation to and for, taking out burnt out winding carefully and rewinding with high quality super enamelled copper wire of existing gauge & size including insulating material and varnish for upto 2 HP capacity including removal and re-fixing of the same complete all as specified and dierected by the Engineer -in-charge.

S&F in repair Capacitor aluminium body existing size/type suitable to split AC 1.5 to 8.5 TR Make - GC/Universal/Sarda

Supply & fixing in repair the following parts suitable for Split type AC of any make and 1.5/2 TR capacity Blower motor of indoor unit.(as per sample)

Supply & fixing in repair the following parts suitable for Split type AC of any make and 5.5/8.5 TR capacity Blower motor of indoor unit.(as per sample)

S&F in repair Single pole and neutral enclosure with a two pin and plug with and socket complete with one single pole MCB 20 Amps make:Havells/ Legrand.

S&F in repair 20 Amp three pin top metal clad, Make-Havells/Anchor/Craptree

S&F in repair Condenser coil copper for split type AC 5.5/8.5 TR. Make - as per sample

S&F in repair Condenser coil copper for split type AC 1.5/2 TR. Make - as per sample

S&F in repair Blower fan motor for split type AC 5.5/8.5 TR outdoor unit. Make : As per sample

Glacier Cooling Solutions Private Limited

R Tech Mech

devan enterprises

B5BUILDING SOLUTIONS