REPAIRS AND REPLACEMENT OF UNSERVICEABLE FILTERS AND ALLIED WORKS FOR CENTRIFUGAL CHILLED AIR CONDITIONING PLANT 3 X 450 TON CAPACITY AT PH-II BLDG MH KIRKEE UNDE GE (MH AND RH) KIRKEE

Amount

Supply and replace the following defective / worn out spares / controls for the chiller Plant completed all as specified and as directed by Engr-in-Charge .

Pressure transducer - Low presure / High Pressure / Oil pressure up to 10 Kg / cm 2 Make : Dun-ham-bush/ Kirloskar/Blue Star

Temperature sensor suitable for the chiller unit. Make : Dun-ham-bush/ Kirloskar/Blue Star

Pressure relief valve Make : Dun-ham-bush/ Kirloskar/Blue Star

M&L for descaling of complete condenser units for central/ package type AC plant of capacity 450TR by means of adding descaling chemical solution or equivalent in the cooling tower sump of required quantity and circulating the liquid to remove the scales inside the pipes and removing side covers of condenser, cleaning the water tubes by scrubbing with nylon brushes and flusing with fresh water, re fixing the covers, Inlet and out let pipes including replacement of neoprene rubber gasket etc. complete all as specified and directed by Engineer-in-charge

Repairing /servicing and overhauling the centrifugal pump by dismantling the pump coupled with induction motor, opening the pump, inspecting for defects and replacing the worn out parts like gland bush, bearings, gland bolts and nuts,gland packing, gasket, water seal etc including repairs to pump shaft by remetalling, grinding, polishing and reassembling the same and replacing the rusted nuts, bolts, washers etc and coupling with motor testing complete for the following capacity of pump all as specified and directed by Engr-in-charge.

Primary chillar pump 20 HP Make Kirloskar, Crompton, Shakti

Secondary chillar Pump 40 HP Make Bell & Gossett

Condenser Pump 30 HP Make Kirloskar, Crompton, Shakti

M&L for taking out the centrifugal pump motor and transporting to work shop , split opeing the motor removing the u/s burnt winding wire, cleaning the slots, re winding with super enameled copper conductor wire of suitable size including insulating materials, varnishing and drying and reassembling and transporting back to site , coupling with pump testing and commissioning all as directed for the following capacities of motors : -

Primary chillar Motor 20 HP Make Kirloskar Brothers

Secondary chillar Motor 40 HP Make Bell & Gossett

Condenser Motor 30 HP Make Kirloskar Brothers

Blower Motor of Cap 5 HP Make Bharat Bijali

Blower Motor of Cap 3 HP Make Bharat Bijali

Dismantling the covers of cooling tower and the cooling fan blades from the position, electrical connections and taking down the cooling tower motor of capacity 10 HP, split opening the motor, removing the burnt out winding, cleaning the slots re winding with super enameled copper conductor wire of suitable size including insulating materials, varnishing and drying and reassembling and transporting back to site and testing on commissioning completed all as specified and as directed by Engr-in-Charge

S&F in repair cooling tower fins as per existing size and shape during all as specified and as directed by Engr-in-Charge

Descaling of cooling tower by dismantling the cooling tower fins removing the scales in the fins, sump by scrubbing with wire / nylon brush and refixing the fins in position including replacing the float valve for supply water line, painting the steel/wooden surfaces with two coats of enamel paint over a coat of zinc oxide primer and testing the cooling tower completed all as specified and as directed by Engr-in-Charge

Supply and replace the worn out 'V' belts of blower motor. Make : Eco drive / fenner / reenolds rubber

Supply and fill Gas R-134 a in cylinder for charging / topping up whenever required completed all as specified and as directed by Engr-in-Charge

M&L for leak testing of gas by evacaveting the gas by suitable means and filling with nitrogen gas for 24 hours rectifying the leakages with and incuding required material / brazing etc. and refilling gas testing chiller completed all as specified and as directed by Engr-in-Charge

Supply and fill compressor oil for centrifugal compressor for toping up / replacement as required completed all as specified and as directed by Engr-in-Charge Make : Kirloskar, Dun-Ham-Bush, Castrol

S&F in replacement of double fitted polymer fabric HDPE fresh air filter(Filter class-G3 as per EN 779) washable/cleanable type having efficiency 95% to 99% down to particle size of 10 micron, fabricated out of CRCA sheet metal duly painted with two coat of grey hammer tone spray painted over two coats of red oxide primer, with lifting handle, Box/flanged type, aluminium spacer etc, of make Thermadyne/ Pall supralon filter / naveen filter all as specified by engr-in-charge of following sizes :-

S&F in replacement of double fitted polymer fabric HDPE fresh air filter(GL-type) washable/cleanable type having efficiency 95% to 99% down to particle size of 5 micron, fabricated out of CRCA sheet metal duly painted with two coat of grey hammer tone spray painted over two coats of red oxide primer, with lifting handle, Box/flanged type, aluminium spacer etc, including taking down make Thermadyne/ Pall supralon filter / naveen filterall as specified by engr-in-charge of following sizes :-

Supply and replace in repairs butter fly valve of dia 100mm suitable for condensing /chiller water line with ISI marked including jointing with gasket ,nut,bolts washer all as specified by Engr-in- charge Make CRI, Kirloskar, L & T

S&F in replace in repairs butter fly valve of dia 125mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket ,nut,bolts washer all as specified by Engr-in- charge Make CRI, Kirloskar, L & T

Supply and replace in repairs butter fly valve of dia 150 mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket ,nut,bolts washerall as specified by Engr-in- charge. Make CRI, Kirloskar, L & T

Supply and fix in replacement NRV of dia 150 mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket ,nut,bolts washerall as specified by Engr-in- charge Make Kirloskar, BIR, Kartar

Supply & fixing in replacement of water pressure gauge as per existing. Make Emerald/ Wika / Rexroth

Supply& fixing in replacement of Temp gauge as per existing. Make Emerald/ Wika / Rexroth

S&F in replacement of following ball bearing (NDE/DE) suitable for cooling tower motor ,chillar motor,Blower motor,condenser motor etc removing of existing unserviceable bearing of any type or make all as directed by Engr-in-charge. Make : SKF/TATA/FAG/ Nachi

Supply and fix in replacement MCCB of following capacities of Make : L & T, Seimense, Legrand

630 A TP 36 KA Adjustable type 415V AC

400A,TP.415V,50 Hz, 36 KA adjustable type

250A,TP.415V,50 Hz 36 KA adjustable type

125A,TP.415V,50 Hz 36 KA adjustable type

100A,TP.415V,50 Hz,16KA adjustable type

160A,TP.415V,50 Hz,36KA adjustable type

32A,TP,415V,50Hz,16KA adjustable type

S&F in replacement of Power contactor AC-3 of Aux voltage 230V , 3NO+1NC of following capacities Make : L & T, Seimense, Legrand

MNX 50-TP of rating 32A,

MNX 32-TP of rating 32A,

MNX 25-TP of rating 25A,

MNX 12-TP of rating 12A,

S&F in replacement of over load relay with inbuilt single phase protection of following capacities Make : L & T, Seimense, Legrand

MN5 of rating 20-33A

MN2 of rating 14-23A

MN2 of rating 6-10A

MN2 of rating 4-6A

Supply and replace the strip heaters of capacity 3 KW / strip all as specified and as directed. Make : Omega / Platinum / finned

S & F VFD for motor as per existing parameters and suitable for 40 HP motor along with programme setting recommanded by OEM (Dun Ham Bush) complete all as specified and directed Make : Danfoss / ABB / Seimense

Serviceing of existing installed VFD as per manufacturer's standard and testing complete as per specified and directed Make : Danfoss

S&F pully including taking down old unserviceable / damaged pully along with necessary fabrication to shaft for filling wear out portion and turning complete, including making allinment, quotated rate includes transportation, hardware & T&P as per site requirement all as specified and directed.

Quarterly Greasing of AHU's all pedstal bearing as per IS Standard including cleaning of old unserviceable grease with help of grease gun up to topping up, rate should quotated including price of grease and T& P

Supply and Replacement AHU blower DIDW fan blower having out velocity not exceeding S.P.(mm/wg) 50-60 m/s energy effincent fan with double inlet , double with forward or backward curved impeller for high static pressure mounted on aluminum extended side rail base frame, existing AHU of following

Blower for Capacity 5 HP motor

Blower for Capacity 3 HP motor

Painting of 450 TR capacity existing cooling tower with existing color all as per directed and specified

Carrying out annual maintenance of 450 TR water chiller plant by approved OMC (original manufacturing company i.e DUNHAM-BUSH) including following routine work .

Quarterly visit by OMC engineer to carryout preventive maintenance checks and also during any breakdown call. (a) Carry out preventive maintenance to improve the efficiency of the chiller plant (b) Carry out oil inspection as and when required including testing of the same for the serviceability for better life of lubrication parts and semi hermatic motor. (c) Checking the set parameters in the controller checking safety fault trips taking control test, contacts cleaning etc. (d) Checking the actual performance /operationing parameters of the chiller with the help of log reading recorded during the previous month and actual parameter of the chiller (e) Taking up repair /replacement of parts /spares/driers/oil as required by OMC Engineer. (f) Servicing, including detail check up and Calibration of relays of microprocessor based Control panel of all three 450 TR AC Plant to keep the same functional all as specified and directed.

Note for item No.31: (a) The following works are deemed to be inclusive in the quoted rate and no extra payment will be provided by the dept. (b) Refrigent leak test is to be carry out under supervision of OEM or OEM Authorised person. (c) Any type of special tools / general purpose tools required for the maintainance of the plant to be supplied by contractor (d) The responsibility of Payment in advance to OMC will be lying on contractor (e) This contract will cover lifting /shifting of any type of material ,up/down the building or shipment cost or freight of any material from site to OMC or any sub venders works.All other charges and transit insurance. (f) All spare /store required during repair and maintenance which shall be genuine Parts of OEM and measured and paid under relevant item.

M/s Vijay Airconditioning Pvt Ltd

M R ENTERPRISES

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