REPAIR MAINTENANCE OF CENTRAL PACKAGE TYPE AC PLANTS CASSETTE SPLIT TYPE AC AT CABS STIR CEMILAC UNDER GEI R D EAST BANGALORE

Amount

Comprehensive Maintanance to VRF type AC 14 HP X 2 nos ODU with 4 nos of cassette type and 8 nos High wall type IDU of Carrier make including general servicing of indoor unit and outdoor unit as and when ordered as in preventive maintenance including cleaning,removing the dust particles of air filters replacement of all worn out parts greasing of fan motors, checking of gas pressure,charging of refrigerant etc all as required for the smooth and satisfactorily functioning of the AC units all as directed by engineer-in-charge. Note: (i)Replacement of compressors, condenser fan motors, Blower and motor, PCBs, Solenoid valves, Drain pumps, Refrigerant, Oil, etc., if required shall be measured and paid separately under relevant items of this Schedule.

Comprehensive Maintanance to VRF type AC 26 HP X 1, 16 HP X 2, and 12 HP X 1 nos ODU with 35 nos High wall type IDU of Carrier make including general servicing of indoor unit and outdoor unit as and when ordered as in preventive maintenance including cleaning,removing the dust particles of air filters replacement of all worn out parts greasing of fan motors, checking of gas pressure,charging of refrigerant etc all as required for the smooth and satisfactorily functioning of the AC units all as directed by engineer-in-charge. Note: (i)Replacement of compressors, condenser fan motors, Blower and motor, PCBs, Solenoid valves, Drain pumps, Refrigerant, Oil, etc., if required shall be measured and paid separately under relevant items of this Schedule.

Comprehensive Maintanance to VRF type AC 20 HP X 1, 18 HP X 8, 16 HP X 2, 14 HP X 2 and 10 HP X 4 nos ODU with 148 nos of cassette type IDU of Carrier make including general servicing of indoor unit and outdoor unit as and when ordered as in preventive maintenance including cleaning,removing the dust particles of air filters replacement of all worn out parts greasing of fan motors, checking of gas pressure,charging of refrigerant etc all as required for the smooth and satisfactorily functioning of the AC units all as directed by engineer-in-charge. Note: (i)Replacement of compressors, condenser fan motors, Blower and motor, PCBs, Solenoid valves, Drain pumps, Refrigerant, Oil, etc., if required shall be measured and paid separately under relevant items of this Schedule.

Comprehensive Maintanance to VRF type AC 16 HP X 4, and 12 HP X 3 nos ODU with 40 nos of cassette type IDU of Voltas make including general servicing of indoor unit and outdoor unit as and when ordered as in preventive maintenance including cleaning,removing the dust particles of air filters replacement of all worn out parts greasing of fan motors, checking of gas pressure,charging of refrigerant etc all as required for the smooth and satisfactorily functioning of the AC units all as directed by engineer-in-charge. Note: (i)Replacement of compressors, condenser fan motors, Blower and motor, PCBs, Solenoid valves, Drain pumps, Refrigerant, Oil, etc., if required shall be measured and paid separately under relevant items of this Schedule.

Comprehensive Maintanance to Inverter type Highwall split AC of any make and capacity upto 3 Tr including general servicing of indoor and outdoor unit as and when ordered as in preventive maintenance including cleaning,removing the dust particles of air filters replacement of all worn out parts greasing of fan motors, checking of gas pressure, charging of refrigerant etc all as required for the smooth and satisfactorily functioning of the AC unit all as directed by engineer-in-charge. Note: (i)Replacement of compressor and spares such as starting capacitor, running capacitor, fan motor, Blowers, PCBs, Refrigerant, Oil etc., if required shall be measured and paid separately under relevant items of this Schedule.

Comprehensive Maintanance to Cassette type AC of any make and capacity upto 4 Tr including general servicing of indoor and outdoor unit as and when ordered as in preventive maintenance including cleaning,removing the dust particles of air filters replacement of all worn out parts greasing of fan motors, checking of gas pressure, charging of refrigerant etc all as required for the smooth and satisfactorily functioning of the AC unit all as directed by engineer-in-charge. Note: (i)Replacement of compressor and spares such as starting capacitor, running capacitor, fan motor, Blowers, PCBs, Refrigerant, Drain pump, Sensors,Oil etc., if required shall be measured and paid separately under relevant items of this Schedule.

Supply and fixing of Variable speed compressor of VRF unit after disconnecting the electrical and refrigerant pipe connection, replace the comprerssor, reconect the electrical and refrigerant pipe conection after flushing the system throughly wit N2 gas, pressure testing for leakages, vaccumising , gas charging and re-commissioning the VRF unit all as required and as per standards. Notes :- (a) Old compressor taken down/ removed shall be replaced with the same make and model. (b) Compressor shall be purchased from manufacturer/ authorised dealer of the manufacturer as one to one replacement.

10 HP to 14 HP

16 HP to 26 HP

Supply and fixing of Fixed speed compressor of VRF unit after disconnecting the electrical and refrigerant pipe connection, replace the comprerssor, reconect the electrical and refrigerant pipe conection after flushing the system throughly wit N2 gas, pressure testing for leakages, vaccumising , gas charging and re-commissioning the VRF unit all as required and as per standards. Notes :- (a) Old compressor taken down/ removed shall be replaced with the same make and model. (b) Compressor shall be purchased from manufacturer/ authorised dealer of the manufacturer as one to one replacement.

10 HP to 14 HP

16 HP to 26 HP

S & F inreplacement of outdoor fan motor DC for VRF unit. complete, all as specified and as directed.

S & F inreplacement of outdoor fan blade for VRF unit. complete, all as specified and as directed.

S & F inreplacement of compressor IPDU (PCB) for VRF unit. complete, all as specified and as directed.

S & F inreplacement of fan IPDU (PCB) for VRF unit. complete, all as specified and as directed.

S & F inreplacement of display board for VRF unit. complete, all as specified and as directed.

S & F inreplacement of indoor or outdoor PMV for VRF unit. complete, all as specified and as directed.

S & F inreplacement of sensors for VRF unit. complete, all as specified and as directed.

S & F inreplacement of PCB's for VRF indoor unit. complete, all as specified and as directed.

S & F inreplacement of motor for VRF indoor unit. complete, all as specified and as directed.

S & F inreplacement of blower for VRF indoor unit. complete, all as specified and as directed.

S & F inreplacement of drain pump for VRF indoor unit. complete, all as specified and as directed.

S & F inreplacement of power contactor VRF unit of any capacity. complete, all as specified and as directed.

M&L for Pressure testing and rectifying the leakages found in the VRF system of any capacity including vacuuming and charging the refrigerant gas to the desired pressure and quqntity. complete for satisfactory functioning all as specified and as directed.

Supply and charging of R410A refrigerant for VRF unit complete all as directed by Engineer- in- charge.

S & F heat insulation superior quality nitrile rubber for copper tubing any size of refrigerant line including necessary clamps pvc tape knots etc complete all as specified.

Materail and labour for cleaning of 11 nos AHU cooling coil by taking out pre filter frame, cleaning of cooling coil and cleaning of AHU, 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 STIR campus all as directed by Engineer - in - Charge

Dismantling 1 nos of screw compressor from 150 TR capacity chiller carefully with using hydraulic jack & chain pulley, putting dummy plates to suction & discharge line & transporting to authorized workshop for repair, etc all as directed. At STIR

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 STIR

Pressure Testing each circuit of carrier make 30XA 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 STIR.

Complete Overhauling of one 06T Compressor in 150 TR chiller unit by opening the compressor endplate, 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. at STIR

General servicing and preventive maintenance of the 150 TR chiller unit. Pressure cleaning of 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 STIR

Supply and Fixing of external oil filter suitable for 150TR capacity chiller unit of carrier at STIR Make. Filtration Level - 10 µ. No. 30GX417132E

Supply and Fixing of drier suitable for 150 TR capacity chiller liquid line. No. XW12EA003 at STIR

Supply and Fixing of Oil level switch suitable for 150 capacity chiller at STIR

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 6T 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 STIR

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

Supply and charging of 134a refrigerant gas for carrier screw chiller.

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

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

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)

Replacement of defective EXV board of 30 XA 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 STIR

Replacement of defective Fan board of 30 XA 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 STIR

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 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 but 5 HP to7.5 HP capacity induction motor

Above but 7.5HP to 10 HP capacity induction motor

Above but 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 20HP to 30 HP capacity Pump

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

Up to 32 amps

63 amps to 100 amps

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

Opening / dismantling and removing the indoor unit of split air conditioner of cap 1.5 /2 TR and supply & fix new indoor unit of split air conditioner of 1.5/2 TR complete with making all connection all specified and directed . Make- LG/Voltas/Blue star/Samsung/Carrier/hitachi or as per existing make

Supply and fix in replacement of outdoor condensing unit of split type AC (normal/ invertor type )1.5/2 TR Capacity all as specified and directed.Make: Voltas/blue star/carrier or as per existing make

Opening / dismantling and removing the indoor unit of split air conditioner of cap 1.5 /2 TR and supply & fix Out door unit of split air conditioner of 1.5/2 TR complete with making all connection all specified and directed . Make- LG/Voltas/Blue star/Samsung/Carrier/hitachi or as per existing make

UNIVERSAL ENGINEERING

Archana Enterprises

R Tech Mech

Sreekrupa Enterprises

RRK PROJECTS

RAHUL ENTERPRISES

Sahara Engineers