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. (v) Penalty @ Rs. 10,000/- shall be added for every subsequent 12 Hrs period till rectification of defect and making the plant functional.

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. 4 here-in-before but FLP motor 2 HP capacity, 1430 RPM of 1200 CFM capacity AHU.

All as per item No. 4 here-in-before but FLP motor 7.5 HP capacity, 1430 RPM of 8500 CFM capacity AHU.

All as per item No. 4 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.

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.9 here-in-before but 0.50 HP 230 volts SP 2780 RPM.

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 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 ball valve strainer type of size 32 mm dia complete all as specified and directed.

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 MCCB 100 Amps 4 Pole 35 KA 415 volts and making all connections complete all as directed.

Supply and replacing MCCB 32 Amps 4 Pole 35 KA 415 volts and making all connections complete all as directed.

Supply and replacing MCCB 40 Amps 3 Pole 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 3 Pole 25 KA 415 volts and making all connections complete all as directed.

Supply and fixing gun metal impeller suitable for 20 HP capacity centrifugal pump set as per existing model and size complete all as specified and 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 replacing power contactor of different type MNX 32, 3 phase 415 volts, with coil voltage 220 volts complete all as directed.

Supply and fixing shaft sleeves suitable for 20 HP capacity centrigugal pump set all as per existing model and size complete all as specified and directed.

Supply and fixing in replacement of CI Non return valve of size 150 mm dia with GM working parts IS-5312 all as specified and 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 gun metal/ brass body air release valve 25 mm dia size complete all as directed.

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 coupled acuator Model No CN7510A2001 operating on 10 volts including testing for proper working complete all as directed. Make : Honeywell/Danfoss

Supply and replacement of non spring return direct coupled acuator Model No CN7510A2007 operating on 10 volts including testing for proper working complete all as directed. Make : Honeywell/Danfoss

Supply and fix in repair 3 way modulating brass valve 25 mm dia in chilled water/hot water line of AHUs as per existing complete all as directed.

Supply and fix in repairs 150 mm dia CI butterfly sluice valve, PN 1.0 pneumatic double acting actuator with both sides flanges and gaskets complete all as specified and directed. Make :- Hudco/Advance/Leader/honeywell/L&T

All as per item No. 41 here-in-above but 100 mm dia

All as per item No. 41 here-in-above but 80 mm dia

Material and labour for carrying out the chemical servicing of the Air Handling units & cooling coils 10000 CFM AHU, 25 TR 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.

All as per item No. 44 here-in-above but 8500 CFM AHU, 21 TR

All as per item No. 44 here-in-above but 1200 CFM AHU, 3 TR

Supply and replacement of water flow switch with stem type sensing element probe model WFS 6000, 150 PSI, 15 Amps, 250 volts testing for proper working completed all as directed. Make :- Honeuwell or equivalent

Material and labour for cleaning the cooling tower (1x150TR, 600GPM) properly by scrubbing with the help of scriber from inside and outside, taking out all sludge, rst etc and replacing of existing unservicable fins and servicing & greasing the motor, valve and painting two coats of synthetic enamel paint to exterior surface of existing colour etc complete all as directed by Engr-in-Charge.

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

REMCO