81014 REPAIR/ MAINTENANCE OF COOL AND COLD STORAGE AND PACKAGE TYPE AC AND CENTRAL TYPE AC PLANTS AT 34 WEU AND OTHER CONNECTED ITMES UNDER AGE E/M NO 1 GE MINNIEBAY, PORT BLAIR

Amount

M&L for leak testing one in number walk-in-freezer/walk-in-cooler comprising of condenser units and evaporator units with pressure testing the complete plant by dry nitrogen gas by separating high side and low side, brazing and low side, rectifying the leakage by gas welding, brazing, pressure testing, vaccumising gas, gas charging the system with existing Refrigerant gas, testing and commissioning all as specified and as directed. Note :- (a) Refrigerant gas paid and measured separately. (b) Including of nitrogen cylinder gas qty as required (Max 7 Kg)

M&L for preparation of old painted steel surfaces of located at various places of cool/cold rooms and connected structure by means of scrapping and filling cavities, etc., and applying two coats of synthetic enamelled paint by means of spray painting and writing SM/MES No., capacity, temperature range, etc., all as specified and as directed. Cool room SM/MES No WIC/654/005/16 Cold Room - SM/MES No WIC 654/001/15)

M&L for repairing of hermitically sealed unit compressor 4.5/5 TR for cool room +10 degree centigrade by disconnecting the suction and discharge refrigerant pipe line, electrical connection, etc., cutting and remove the upper portion of compressor body by lazer method, taking out unserviceable items and replacement with new rotor, stator, one way valve, piston, suction and discharge port, filling of compressor oil, unite the upper portion fo compressor body by suitable welding, connecting the suction and discharge refrigerant pipe line, electrical connection, etc as suitable for working on R 404 A gas including charging the system with refrigerant gas upto required pressure including testing of compressor complete all as specified and as directed. Model No ZR72KC-TFD-52E of Make : Emerson Note : (i) The cost of transportation from Port Blair (AC Installation) to Mainland (Workshop) and back shall be deemed to be included in the quoted rate. (ii) Repair action shall be taken up based on recommendation of IEM

All as per item No 4 here-in-before above but hermitically sealed unit compressor 4.5/5 TR for cold room -20 degree centigrade complete all as specified and as directed. Model No OP-LGHE271NTA06D of Make : Danfoss

All as per item No 4 here-in-before above but hermitically sealed unit compressor 4.5/5 TR for cold room -10 degree centigrade complete all as specified and as directed. Model No NTZ136A4LR1A of Make : Danfoss

M&L as in repair of steel door in cold/cool storage plant including dismantling the door, taking out old insulated material and replacing with new glass wool, puff, external sheet, cotton of adequate size & quantity and replacing PVC insulated Copper conductor electric wire for lighting, door locks/ hinges, sealing gaskets, door heaters, etc., reassembling with steel door and reinstall as required at site complete all as specified and as directed. Approx size of door 6.6 feet x 3.1 feet x 3 inch

S&F as in repair of Condenser fan motor, single shaft, single speed, 1400RPM, 230Volts AC, suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of Single phase preventor suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of over load relay direct mounting type of range 2-3.2Amps suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of thermostat unit for cold storage suitable on working 12˚C to 2˚C for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of thermostat unit for cold storage suitable on working -10˚C to -20˚C for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of condenser assembly with copper tubing suitable for 4.5/5 TR compressor of existing size and base mounting suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of cooling coil assembly for indoor unit with copper tubing suitable for 4.5/5 TR compressor of existing size and base mountingsuitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of tray heater suitable for existing cold room suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of analog switch timer suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of HP LP cutout suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of Thermal expansion valve suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of Eleminator liquid line filter drier suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of PC board controller suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed.

S&F as in repair of MCB TPN 32Amps complete all as specified and as directed.

S&F as in repair of Phase failure overload protection of range 20Amps complete all as specified and as directed.

S&F as in repair of Evaporator fan of size 12" to 14" dia suitable for 4.5/5TR capacity Cold Storage Plant complete all as specified and as directed .

S&F as in repair drain outlet CPVC pipe 15mm dia connected from rear side of Cold storage plant drain with necessary clamps and fixtures, fixed on wall and floor complete all as specified and as directed.

S&F as in repair drain outlet GI pipe 15mm dia connected from inside of Cold storage plant drain with necessary clamps and fixtures, fixed on wall and floor complete all as specified and as directed.

S&F as in repair of Copper tubing of size 1/4" flare size conforming to relevant IS fixing of existing place complete all as specified and as directed.

S&F as in repair of Copper tubing of size 3/8" flare size conforming to relevant IS fixing of existing place complete all as specified and as directed.

S&F as in repair of LED Light fitting of 11 watt suitable for temperature range - 20 Centigrade to +50 Centigrade temperature complete all as specified and as directed.

S&F as in repair of insulation of copper tubing for split unit of any capacity & any size from indoor to out door unit fixing of existing place complete all as specified and as directed.

Supply only Regrigerant gas R-404 A in manufacturer's sealed cylinder complete all as specified and as directed. (i) Empty cylinder shall be returned to contractor. (ii) Payment shall be made for net weight of gas.

Dismantling / Taking down of Cross arms of steel channels or angle section complete all as specified and as directed by Engineer-in -charge.

Material and labour for cross arms, bracing, supports, clamps and back plate fabricated from structural MS section for gate including nuts, bolts, washers, welding, bending, cold or hot, drilling holes for bolts in any shape or size as indicated or directed and inclusive of complete all as specified and as directed.

S&F as in repair of defrost delay timer with switch suitable for 4.5/5 TR capacity cold storage plant complete all as specified and as directed.

S&F as in repair of sub zero display suitable for 4.5/5 TR capacity cold storage plant complete all as specified and as directed.

S&F as in repair of steel door hinge of capacity 4.5/5 TR capacity for cold storage plant including three numbers of selfdrill screw/bolts and welding at site if required complete all as specified and as directed.

M&L for Servicing the Air-conditioning Plant /unit 50 TR by checking the functioning of chiller unit/pump, checking the refrigerant & Leakage testing by nitrogen gas of the entire unit, replenishing refrigerant gas if required, checking of compressor for its proper working and replenishing of compressor oil, checking of Microprocessor control panel and replacement of control panel wiring, lubricating the pumpsets and fan motor including replacement of bearing and tightening of bolts and nuts complete all as specified and as directed. Note : - (i) The cost of compressor oil, PVC Cable for control panel wiring, Nitrogen gas for leakage testing, grease for lubricating and bearing of motors shall be deemed to be included in the quoted rate. (ii) Refrigerant gas will be measured and paid separately.

M&L for Sevicing of Air Handling Units (AHU) Model ZDS-160, Air Qty-15600 CFM of 50 TR by remove the filter, vacuum the filter, wash the filter and reinstall the filter, brush the cooling coil and spray the foam coil cleaner including rinse the coil, alignment of shaft & Motor, servicing of chilled water line strainer for the AHUs, tighting of terminals of motor and servicing of VFDs for the AHU complete all as specified and as directed

M&L for De-scaling of condensor unit of AC plant capacity 50 TR by washing with chemical agent (HCL) and water through circulation pump including brushing with wire brush and testing complete all as specified and as directed.

M&L for servicing round bottle shaped cooling tower of capacity 100 TR, DM Series, replacement of defective sprinkler assembly & fins complete including descaling of entire plant by chemical agent and water through ciculation pump, brushing and replacement of bearing of motor of cooling tower complete all as specified and as directed. Model No DMA 1260 of Make - Advance cooling towers Pvt Ltd

M&L for disconnecting/dismantling (electrically & mechanically) the 7.5 HP capacity monoblock pump and transporting to workshop , opening the pump motor, cleaning the pump, greasing to bearing/bushes, replace the gland rope, gland nut bolts, opening motor, varnishing to stator winding with class I varnish, heating baking the same, greasing to motor bearing, cleaning the rotor and re assembling the same, brought back at site, fixing it at its original location with proper alignment and testing complete all as specified and directed.

M&L for disconnecting/dismantling (electrically & mechanically) the 5 HP capacity monoblock pump and transporting to workshop , opening the pump motor, cleaning the pump, greasing to bearing/bushes, replace the gland rope, gland nut bolts, opening motor, varnishing to stator winding with class I varnish, heating baking the same, greasing to motor bearing, cleaning the rotor and re assembling the same, brought back at site, fixing it at its original location with proper alignment and testing complete all as specified and directed.

M&L for repairing of hermitically sealed unit compressor 12.5 TR capacity, 3 phase, 440Volts, model SZ185S4RC by disconnecting the suction and discharge refrigerant pipe line, electrical connection, etc., cutting and remove the upper portion of compressor body by lazer method, taking out unserviceable items and replacement with new rotor, stator, one way valve, piston, suction and discharge port, filling of compressor oil, unite the upper portion fo compressor body by suitable welding, connecting the suction and discharge refrigerant pipe line, electrical connection, etc as suitable for working on R 404 A gas including charging the system with refrigerant gas including testing of compressor complete all as specified and as directed. Note : (i) The cost of transportation from Port Blair (AC Installation) to Mainland (Workshop) and back shall be deemed to be included in the quoted rate. (ii) Repair action shall be taken up based on recommendation of IEM

Supply and fixing as in repair of shell and tube chiller unit suitable for AC plant capacity 50 TR as per existing make and model including all connected accessories by removing the defective chiller unit complete all as specified and as directed. Note : (i) The cost of transportation from Port Blair (AC Installation) to Mainland (Workshop) and back shall be deemed to be included in the quoted rate. (ii) Repair action shall be taken up based on recommendation of IEM

S&F as in repair Auto thermostat, range -300C to +150C, model KP61 including taking down unserviceable thermostat complete all as specified and as directed.

S&F as in repair Temperature gauge, range -100C to +500C, including taking down unserviceable temp gauge complete all as specified and as directed.

S&F as in repair Water flow controller switch, model HFS-25 including taking down unserviceable water flow controller switch complete all as specified and as directed.

S&F as in repair Thermostatic expansion valve, model TGEX 11TR, including taking down unserviceable valve complete all as specified and as directed.

Supply and fixing as in repair Nylon filters as per exisiting size 2m x 1.5m and model ZDS-160 of AHU 50 TR complete all as specified and as directed.

Supply only Regrigerant gas R-404 A/R 407C in manufacturer's sealed cylinder complete all as specified and as directed. (i) Empty cylinder shall be returned to contractor. (ii) Payment shall be made for net weight of gas.

S&F as in repair trutech actuator, model RLU222, including taking down unserviceable actuator complete all as specified and as directed.

Supply and fixing V belt of size C-112 including taking down unserviceable belt complete all as specified and as directed.

S&F as in repair electromotoric actuator, model SBV, including taking down unserviceable actuator complete all as specified and as directed.

S&F as in repair timer 800 SD including taking down unserviceable timer complete all as specified and as directed.

S&F as in repair PCB controller kit complete suitable for AC plant capacity 50 TR including taking down unserviceable PCB kit complete all as specified and as directed.

M&L in replacement of Solenoid pilot control valve coil assembly, 11 watt, 230 volt AC, type 6, size 2 including taking down unserviceable valve complete all as specified and as directed

M&L in replacement of HP/LP cut off switch MP - 15 with flare nut including taking down unserviceable cut off switch complete all as specified and as directed

M&L in replacement of water pressure cut out, IP 70 including taking down unserviceable cut out complete all as specified and as directed

M&L in replacement of oil pressure cut off switch, MP - 55 including taking down unserviceable cut off switch complete all as specified and as directed

S&F as in repair contactor 25 A, model NC1-4011, 220/415V including taking down unserviceable contactor complete all as specified and as directed.

S&F as in repair Micro computer control panel blue star suitable for AC plant capacity 50 TR including taking down unserviceable panel complete all as specified and as directed.

S&F MCB TP 50 A with suitable size of copper lugs including taking down unserviceable MCB complete all as specified and as directed.

S&F as in repair MCB TP 6-32 A, 10 KA breaking capacity including taking out old unserviceable MCB complete all as specified and as directed.

S&F as in repair Fuse size A4, 125 A, 80 KA including taking down unserviceable fuse complete all as specified and as directed.

Supply and fix in repair MCCB 4 Pole 125 A, with suitable size of lugs including taking out old unserviceable MCCB complete all as specified and as directed. Make: L & T

Supply and fix in repair MCCB 4 Pole 100 A, 16 KA breaking capacity with suitable size of lugs including taking out old unserviceable MCCB complete all as specified and as directed.

Supply and fix in repair MCCB 4 Pole 63 A with suitable size of lugs including taking out old unserviceable MCCB complete all as specified and as directed.

S&F as in repair Liquid line filter drier with 1/4 inch flare including taking out old unserviceable filter drier complete all as specified and as directed.

S&F as in repair Star-Delta starter air break suitable for chilled water pump of capacity 7.5 HP including taking out old unserviceable starter all as specified and as directed.

S&F as in repair Pressure gauge Dial type 0 to 100 Kg/Cm2 including taking out old unserviceable pressure gauge complete all as specified and as directed.

S&F as in repair Butterfly valve of size 150 mm bore, both ends flanged and drilled with disc of DI of class PN- l.6, lSI marked including taking down unserviceable butterfly valve complete all as specified and as directed.

S&F Butterfly valve of size 65 mm bore, both ends flanged and drilled with disc of DI with epoxy coating or CI with nylon coating and duly sealed with neoprene rubber / EPDM, of class 'PN- l.6, lSI marked including taking down unserviceable butterfly valve complete all as specified and as directed.

S&F as in repair Non-return valve of size 150 mm bore, both ends flanged and drilled with disc of DI of class PN- l.6, lSI marked including taking down unserviceable non return valve complete all as specified and as directed.

S&F as in repair Non-return valve of size 65 mm bore, both ends flanged and drilled with disc of DI with epoxy coating or CI with nylon coating and duly sealed with neoprene rubber / EPDM, of class 'PN- l.6, lSI marked including taking down unserviceable non return valve complete all as specified and as directed.

MK ENGINEERING

Tropical Refrigeration