COMPREHENSIVE AND PREVENTIVE MAINTENANCE OF CHILLER PLANT 3 x 150 TR AND REPAIR/ MAINT OF CONNECTED SYSTEM FOR HVAC AT TP COMPLEX AFS DIGARU

Amount

M&L for preventive and comprehensive maintenance of central AC chiller Plant of capacity 3x150 TR semihermatic screw chillers type Model – LCWX2-0525D through the OEM i.e, M/S Blue Star for following plants and equipments of WC R134a DX Semihermatic screw chillers Model LCWX2-0525D-3x150 TR, including following complete operations and all as specified and directed: - (a) Checking and rectification, if abnormal noise, vibration, leakage of oil, refrigerant etc. (b) Topping up system with refrigerant and oil, replace dehydrators etc. (c) Checking of operation of oil heater, motor protector, flow switch, loading unloading,O/L etc. (d) Checking of control valves. (e) Develop action plan for rectifying, abnormalities if any observed in performance of the system. (f) To attend break down calls as and when required, investigation, locate defects and submit action plan to rectify the same. (g) All the maintenance/servicing works should be done in such a way so that the equipment/unit can be used for its optimum performance. (h) Adjustments in the system to acieve required temperature & RH level as required by the user. (j) Cleaning of all type of air filters. (k) Checking the performance of AHUs. (l) Descaling of copper tubes of the cooling coil(the water circuit) by suitable means as per manufacturer's recommendation and general standards. (m) Parameters checking before and after servicing. (n) Cleaning of ducting system having diffusers, grills, dampers etc. (o) Servicing of evaporators, expansion valves, water cooled condensers, oil cooler, oil pipings, oil filters, refrigerant pipings, refrigerant filters, solenoid and automatic control valves, AHU control panel. Contd........

Note :- (i) Scope of work also includes supply of materials like Timer, Chiller in-out sensors, Filter Drier and solenoid coil during AMC. (ii) Spare parts required for repair/ replacement will be measured and paid in relevent items of SL No -2 here in after. (iii) Comprehensive maintenance is to be carried out by OEM i.e. M/s Blue Star only. The contractor shall be required to submit a MOU with OEM for the same and it will be an essential requirement in Technical Evaluation stage. The tenderer shall required to upload MOU with OEM otherwise bids shall not be qualify for opening of finance bid. (iv) MOU from autorised dealers of OEM shall not be accepted.

Supply only following spare suitable for 150TR capacity WC R134aDX Chiller Model LCWX2-0525D Make : Blue Star

Solenoid Coil

Oil heater

Solenoid valve

Filter drier core

Pressure transducer

Main control board

Chiller in/out sensor

Compressure oil CPI 120 POE oil

Refrigerant R-134a

Contactor

Motor protector

Timer

CT coil

Display

Acid HCL Hydrocloric

Disconnecting the defective monoblock pump set from the system, shifting to civil workshop, dismantling the electric motor of capacity 20 HP 3 Phase 415 volts and removing burnt out windings, cleaning the slots, rewinding with super enemelled copper winding wire as per existing gauge and size, varnishing and drying complete, reassembling with pump, replacing the ball bearings as per existing size and make, transporting to site and refixing at original position, and connecting the pump set electrically and mechanically, testing for satisfactory working all as directed. Note :- Dead flanges with nuts, washers and gaskets etc shall be provided by the contractor and unit rate quoted shall deemed to included the cost of the same.

Disconnecting the defective monoblock pump set of capacity 20 HP, from the system, shifting to civil workshop, dismantling the pump and removing defective/worn out parts like ball bearings, impeller nut, gland packing shaft sleeves, GM bushes, gaskets set, GM impeller and reassembling the pump by replacing the unserviceable parts with new ones, transporting to site and refixing at original position, and connecting the pump set electrically and mechanically, testing for satisfactory working all as directed. Note :- (a) Cost of spares shall be measured and paid under relevant item of Sch ‘A’ (b) Cost of minor spares like washers, grease, cotton waste, gasket set, gland packing etc shall be deemed to include in the unit rate quoted and shall not be paid extra.

Disconnecting mechanically and electrically cooling tower fan motor from the system, shifting to civil workshop, dismantling the electric motor and removing burnt out windings, cleaning the slots, rewinding with super enemelled copper winding wire as per existing gauge and size varnishing and drying complete, reassembling, replacing the ball bearings as per existing size and make, transporting to site and re-fixing at original position, connecting electrically and mechanically, testing for satisfactory working all as directed for 10 HP 415 volts 3 phase AC induction motor of any make complete all as directed.

All as per item No. 5 here-in-before but FLP motor 2 HP capacity, 1430 RPM of 1200 CFM capacity AHU.

All as per item No. 5 here-in-before but FLP motor 7.5 HP capacity, 1430 RPM of 8500 CFM capacity AHU.

All as per item No. 5 here-in-before but FLP motor 10 HP capacity, 1430 RPM of 10000 CFM capacity AHU.

Taking out the defective pump set along with motor from the water circulating system of hot water generator by disconnecting electrically and machanically, shifting to civil workshop, dismantling the same to remove burnt out windings and defective parts, rewinding the motor with super enamelled copper winding wire including all insulating materials all as per existing, varnishing/ drying etc complete and replacing the bearings/ bushes as per existing size, replacing the pump impeller, reassembling the same, shifting to original site, reconnecting electricity and mechanically and testing for proper working all as directed for 23 USGPM @ 20 mtr head, capacity 3 phase 415 volts pump set of any make.

Supply and replacing V belts of size A-37 Make:Hilton/Fenner

Supply and replacing V belts of size B-40 Make:Hilton/Fenner

Supply and replacing V belts of size B-69 Make:Hilton/Fenner

Taking out the defective pump set alongwith motor from the AHU by disconnecting electrically and mechanically, shifting to civil workshop, dismantling the same to remove burnt out windings and defective parts, rewinding the motor with super enemelled copper winding wire incl all insulating materials all as per existing, varnishing/drying etc complete and replacing the bearings/bushes as per existing size replacing the pump impeller, reassembling the same shifting to original site, reconnecting electrically and mechanically and testing for proper working complete all as specified and directed for the 0.25 HP 230 volts SP 2780 RPM.

All as per Item No.13 here-in-before but 0.50 HP 230 volts SP 2780 RPM.

Taking out the defective humidity fire pumping set of cap 0.25 HP set alongwith motor from the AHU by disconnecting electrically and mechanically, shifting to civil workshop, dismantling the same to remove burnt out windings and defective parts, rewinding the motor with super enemelled copper winding wire incl all insulating materials all as per existing, varnishing/drying etc complete and replacing the bearings/bushes as per existing size replacing the pump impeller, reassembling the same shifting to original site, reconnecting electrically and mechanically and testing for proper working complete all as specified and directed for the 0.25 HP 230 volts SP 2780 RPM.

Supply and replacing oil tight limit switch Model No.TLS-100-0 complete all as specified. Make Takmec or equivalent.

Supply and replacing pressure gauge round type size 0-150 Psi complete all as specified and as directed. Make : GURU/WAAREE/BAUMER

Supply and replacing temperature gauge round type range 0-50 degree centigrade complete all as specified and as directed. Make : GURU/WAAREE/BAUMER

Supply and replacing pre filters type EU4/G4 suitable for air handling unit, box type with aluminium extruded section frame and body of size 610 x 610 x 50mm and efficiency 90% down to 10 micron particle size complete all as directed. Make – Thermodyne/Purolator/ Athlete etc

All as per item No. 19 here-in-before but size 610mm x 305mm x 50mm complete all as specified and as directed.

All as per item No. 19 here-in-before but size 305mm x 305mm x 50mm complete all as specified and as directed.

Supply and replacing motor pulley having two belt grooves with taper bush and internal dia to match with AHU motor shaft and slot for fixing key of size 90mm dia for 2HP FLP motor complete all as directed.

Supply and replacing MCCB 100 Amps TPN 35 KA 415 volts and making all connections complete all as directed.

Supply and replacing MCCB 32 Amps TPN 35 KA 415 volts and making all connections complete all as directed.

Supply and replacing MCCB 40 Amps TP 35 KA 415 volts and making all connections complete all as directed.

Supply and replacing MCCB 63 Amps TP 35 KA 415 volts and making all connections complete all as directed.

Supply and replacing MCCB 125 Amps TP 25 KA 415 volts and making all connections complete all as directed.

Supply and replacing power contactor of different type MNX 12, 3 phase 415 volts, with coil voltage 220 volts complete all as directed.

Supply and replacing power contactor of different type MNX 18, 3 phase 415 volts, with coil voltage 220 volts complete all as directed.

Supply and replacing power contactor of different type MNX 22, 3 phase 415 volts, with coil voltage 220 volts complete all as directed.

Supply and replacement of NRV of size 150mm PN-1.6 complete all as directed.

Supply and fixing gun metal balancing valve complete incl jointing materials, nuts/bolts/washers/gaskets etc and taking out the defective unserviceable valve all as directed for the size 32 mm dia Make – Kirloskar/Zoloto/Leader.

Supply and replacing immersion type water heater assembly of capacity 15 KW suitable for Emrald make hot water generator complete all as per existing and all as directed

Supply and replacing immersion type water heater assembly of capacity 5 KW suitable for Emrald make hot water generator complete all as per existing and all as directed

Supply and replacing duct heater assembly of capacity 3 KW suitable for Emrald make hot water generator complete all as per existing and all as directed

Supply and replacing thermostat of range 30 degree to 110 degree celcius complete all as directed. Make – ANCO/Bajaj

Supply and replacing low level cut out safety switch type EELC -1 of Make EE or equivalent complete all as directed.

Supply and replacement of non spring return direct coupledacuator Model No CN7510A2001 operating on 10 volts including testing for proper working complete all as directed. Make : Honeywell/Danfoss

Material and labour for carrying out the chemical servicing of the Air Handling units & cooling coils by applying the non-aciditic scale removing agent to the fins area of the cooling coil, copper tubes, removing the complete scale deposit across the coil, flushing through and complete blowing out the dirt, cleaning the fan implellers, filter section, fan section and complete cleaning of filters, tightening of all bolts & nuts, renew the rusted bolts & nuts checking the alignment of the drive set and testing & commissioning the Air Handling units of AC plant complete all as directed by Engr-in-Charge.

10000 CFM AHU, 25 TR

8500 CFM AHU, 21 TR

1200 CFM AHU, 3 TR

Servicing and maintenance of Emrald Make cap 45 KW Hot water generator (Total-04 Nos) complete by opening the existing assy and draining out complete water cleaning the container checking of servicability of heating element, pressure gauge etc and reassembling the same and testing complete all as directed

M/S TRADE CENTRE