REPAIRS / MAINTENANCE OF VARIOUS CHILLER UNITS OF CENTRALISED AC PLANTS OF MAKE VOLTAS IN NAVAL STATION, BHEEMUNIPATNAM

Amount

M&L for carrying out complete the rectification of compressors, condensers and evaporator system of capacity 15 TR (2 x 7.5 TR) AC plant and panel. Make : Voltas AWS NAD including panel, compressor in all respect, refixing the same in its original position and re-connecting all disconnected lines including Leak test, pressure, nitrogen test, Vacuuming including gas filling etc, in serviceable and operational condition complete all as manufacturers instruction with following items as given below and directed.

Note: (i) The rate quoted shall be deemed to include for necessary T&P, MS Nuts, MS Bolts, MS washers, gaskets drier core filter etc to put into AC Plant and panels in serviceable condition, testing and commissioning complete all as directed by the Engr-in-charge. (ii) New spare parts required for replacing old parts shall be measured and paid separately against ‘Supply only’ under item No 1.03 to 1.05 here-in-after, labour rate quoted shall be deemed to have been inclusive of such items.

(iii) Any minor spares/parts/accessories not covered in the Schedule "A" Part but required for completion of job shall be provided by the contractor and the rate quoted shall be deemed to have been inclusive of such items. (iv) Servicing of control wiring in the system/panel operating parameter microprocessor, motherboard communication, control board, transducers etc, is deemed to be included in the rate. (v) Servicing shall be carried out through OEM /authorised Agency only and test report shall be submitted in duplicate.

Supply only Package Unit machine monitoring display complete set Unit Model : DPUWSC55 or equivalent

Supply only MPD, PMN, and controller. Unit Model : APUWSC55.

Supply only Refrigerants gas R-22

M&L for carrying out complete the rectification of compressors, condensers and evaporator system capacity of 3 x 25 TR AC Plant Make: Voltas Model no WCDSO24DMN P 206 NAD including panel, condenser, evaporator recommissioning re-assembling the compressor in all respect, refixing the same in its original position and re-connecting all disconnected lines including brazing of liquid and discharge line, leak test, pressure test, nitrogen test, Vacuuming, gas filling etc, in serviceable and operational condition complete all as manufacturers instruction with following items as given below all as directed by Engr-in-charge.

Note: (i) The rate quoted shall be deemed to include for necessary T&P, MS Nuts, MS Bolts, MS washers, gaskets drier core filter etc to put into AC Plant and panels in serviceable condition, testing and commissioning complete all as directed by the Engr-in-charge. (ii) New spare parts required for replacing old parts shall be measured and paid separately against ‘Supply only’ under item No 2.03 to 2.07 here-in-after, labour rate quoted shall be deemed to have been inclusive of such items.

(iii) Any minor spares/parts/accessories not covered in the Schedule "A" Part but required for completion of job shall be provided by the contractor and the rate quoted shall be deemed to have been inclusive of such items. (iv) Servicing of control wiring in the system/ panel operating parameter microprocesor, motherboard communication, control board, transducers etc, is deemed to be included in the rate. (v) Servicing shall be carried out through OEM/authorised Agency only and test report shall be submitted in duplicate.

Supply only Compressor Model : SM18534RC in cluding brazing.

Supply only condenser unit as per specific requirement sutaible for existing water cooled chiller package existing chiller package Model ACWCDS024DMN New condenser model model: AC170400000CI.

Supply only of DX Evaporator assembly wih enhanced feature as per the reqirment sutaible for the existing water cooled chiller package to new Evaporator , Re-commissioning the unit Including Refrigerant and Existing chiller package model : ACWCDS024DMN New Evaporator model: AC177000000C.

Supply Expansion valve existing model .

Supply only Refrigerants gas R-22

M&L for carrying out complete the rectification of compressors, condensers and evaporator system capacity of 3 x 30 TR. Make : Voltas Model no WCUR0400MNT IN HANGER 9 including panel recommissioning, Re-assembling the compressor in all respect, refixing the same in its original position and re-connecting all disconnected lines including Leak test, pressure, nitrogen test, Vacuuming, gas filling etc, in serviceable and operational condition complete all as manufacturers instruction and with following items as given below complete all as directed by Engr-in-Charge.

Note: (i) The rate quoted shall be deemed to include for necessary T&P, MS Nuts, MS Bolts, MS washers, gaskets etc to put into AC Plant and Panels in serviceable condition, testing and commissioning complete all as directed by the Engr-in-charge. (ii) New spare parts required for replacing old parts shall be measured and paid separately against ‘Supply only’ under item No 3.03 to 3.09 here-in-after, labour rate quoted shall be deemed to have been inclusive of such items.

(iii) Any minor spares/parts/accessories not covered in the Schedule "A" Part but required for completion of job shall be provided by the contractor and the rate quoted shall be deemed to have been inclusive of such items. (iv) Servicing of control wiring in the system/panel operating parameter microprocesor, motherboard communication, control board, shaft seal assembly transducers etc, is deemed to be included in the rate. (v) Servicing shall be carried out through OEM /authorised Agency only and test report shall be submitted in duplicate.

Supply only Compressor oil

Supply only Refrigerants gas R-22

Supply only Panel machine monitoring display set Model : WCUR0400MNT or equivalent

Supply of spares pressure transmiter, oil sensor, MVPD, crank shaft, main bearing, piston ring set suction valve read, discharge valve reads, piston including connected accessorries. Unit Model : WCUR0400MNT.

Supply only Pressure Transduser existing model.

Supply and Servicing suction and discharge valve of compresor including replacing of teflon sheet washer and neoprene ring etc

Supply only Expansion valve Existing model

M&L for carrying out complete the rectification of compressors, condensers and evaportor system capacity of 3 x 39 TR. Make : Voltas Model no WCUR0400MNT in MARCOS including panel recommissioning, Re-assembling the compressor in all respect, refixing the same in its original position and re-connecting all disconnected lines including Leak test, pressure, nitrogen test, Vacuuming, gas filling etc, in serviceable and operational condition complete all as manufacturers instruction and as directed by Engr-in- charge.

Note: (i) The rate quoted shall be deemed to include for necessary T&P, MS Nuts, MS Bolts, MS washers, gaskets drier core filter etc to put into AC Plant and Panels in serviceable condition, testing and commissioning complete all as directed by the Engr-in-charge. (ii) New spare parts required for replacing old parts shall be measured and paid separately against ‘Supply only’ under item No 4.03 to 4.05 here-in-after, labour rate quoted shall be deemed to have been inclusive of such items.

(iii) Any minor spares / parts /accessories not covered in the Schedule "A" Part but required for completion of job shall be provided by the contractor and the rate quoted shall be deemed to have been inclusive of such items. (iv) Renewal of control wiring in the system/ panel is deemed to be included in the rate. (v) Servicing shall be carried out through OEM /authorised Agency only and test report shall be submitted in duplicate.

Supply only Compressor Model : SM18554RC and MPD incl copper brazining. Model : WCUR0400MNT

Supply only MPD supply 230 VAC. Model: WCUR0400MNT

Supply only Expansion valve existing model.

Supply only Refrigerants gas R-407

M&L for carrying out complete the rectification of compressors, condensers and evaportor system capacity of 3 x 50 TR Hanger 11 Make : Voltas including panel recommissioning, Re-assembling the compressor in all respect, refixing the same in its original position and re-connecting all disconnected lines including Leak test, pressure, nitrogen test, Vacuuming, gas filling etc, in serviceable and operational condition complete all as per manufacturers instruction and with following items as given below complete all as directed by Engr-in-charge.

Note: (i) The rate quoted shall be deemed to include for necessary T&P, MS Nuts, MS Bolts, MS washers, gaskets drier core filter etc to put into AC Plant and panels in serviceable condition, testing and commissioning complete all as directed by the Engr-in-charge. (ii) New spare parts required for replacing old parts shall be measured and paid separately against ‘Supply only’ under item No 5.03 to 5.08 here-in-after, labour rate quoted shall be deemed to have been inclusive of such items.

(iii) Any minor spares/parts/accessories not covered in the Schedule "A" Part but required for completion of job shall be provided by the contractor and the rate quoted shall be deemed to have been inclusive of such items. (iv) Servicing of control wiring in the system/panel operating parameter microprocessor, motherboard communication, control board, transducers etc, is deemed to be included in the rate. (v) Servicing shall be carried out through OEM /authorised Agency only and test report shall be submitted in duplicate.

Supply only pressure switch.

Supply only Contactor Set for 3 pole contactor AC3, 32Amps as existing.

Supply only MVPD & Temperature sensor.

Supply only Refrigerants gas R-22

Compressor Model : SM18554RC and MPD incl copper brazining. Model : WCUR0400MNT

Supply only MCCB 3 pole, 35 KA 100 Amp from the existing pannel, adjustable type.

Supply only expansion valve

M&L for complete rectification of compressors, condensers and evapator system capacity of 60 TR Make : Voltas Model : WCDR060RMN Hanger C-01 including panel recommissioning, Re-assembling the compressor in all respect, refixing the same in its original position and re-connecting all disconnected lines Leak test, pressure, nitrogen test, Vacuuming, gas filling etc, in serviceable and operational condition complete all as manufacturers instruction and with following items as given below complete all as specified and directed by Engr-in-charge.

Note: (i) The rate quoted shall be deemed to include for necessary T&P, MS Nuts, MS Bolts, MS washers, gaskets etc drier core filter to put into AC Plant and panels in serviceable condition, testing and commissioning complete all as directed by the Engr-in-charge. (ii) New spare parts required for replacing old parts shall be measured and paid separately against ‘Supply only’ under item No 6.03 to 6.06 here-in-after, labour rate quoted shall be deemed to have been inclusive of such items.

(iii) Any minor spares/parts/accessories not covered in the Schedule "A" Part but required for completion of job shall be provided by the contractor and the rate quoted shall be deemed to have been inclusive of such items. (iv) Servicing of control wiring in the system/panel operating parameter microprocesor, motherboard communication, control board, transducers etc, is deemed to be included in the rate. (v) Servicing shall be carried out through OEM /authorised Agency only and test report shall be submitted in duplicate.

Supply only Electrical panel controller unit model no WCDS048DMN2X2.

Supply only Refrigerants gas R-22

Supply only Expansion valve Existing model

Supply only Power Contactor Set for 3 pole contactor AC 3, 25 Amps MNX 25 as existing panel

M&L for carrying out attending to break down of central type AC plant of capacity upto 60 TR by only auth OEM (M/S VOLTAS) rep/team for fault finding incl attending repairs as and when required such as no start condition of AC plant and repairing, starting, the operating parameter of the chillers checking any vibration, functioning microprocessor, flow swich calibration, HP/LP cut out swich, oil pump and oil heater the AC plant till smooth running and setting up the alignment required parameter of all major/minor parts such as compressor microprocessor based central AC plant, general repair smooth and trouble free operation of plant to the entire satisfaction of user /dep. Attending break down inspection service report duly mentioning the date of inspection signature of service engineer, Engineer -in- Charge shall be submitted for claming payment, as required in ground as ordered by Engr-in-charge.

M&L for carrying out the descaling of the shell & Tube condensers by isolation of each condenser by providing of dummy plate for inlet & outlet connection and separation of condenser from water circulation without disturbing the operation of the AC plant, carrying out the descaling by circulation of the diluted scale removing agent organic compound type chemical of RA III / chemtex Brand at the appropriate ratio depend upon as recommended by manufacturer and the scale deposit inside copper tube by forced circulation and opening the end covers, mechanical brushing the copper tubes with nylon brushes of various size to remove complete scale, de-greasing with caustic soda solution and flushing out with fresh water, refixing all disconnected pipes lines, end covers with new rubber gasket and opening water line valves and checking of water leakages, apply grease to all M.S. Bolts & Nuts and put the condensers of the following capacities in operational complete all as directed by Engr - in - Charge:-

15 TR Capacity

25 TR Capacity

30 TR Capacity

39 TR Capacity

50 TR Capacity

60 TR Capacity

M/S CHANDRA ENGINEERS AND CONTRACTORS (BID ID -3339830)

SRIVALLI ENGINEERS (BID ID -3349576)