REPAIR/ DESCALING OF THE AIR HANDLING UNITS 08 NO’s AND ALLIED WORKSINSTALLED FOR LIBRARYOF GMC, JAMMU.
Sl. No.
Item Description
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Repair/Descaling of the air handling units 08 No’sinstalled for Library of GMCJammu by way of supplying water throughinlet and closing the outlet valves of the air handling unit. Identifying the leakages of cooling coils by marking the same and Draining out the water from the cooling coils and repairing of the cooling coils by way of copper brazing process and also repairing the damaged fins of the AHU coils and then filling the coils of the AHUs with nitrogen gas by making the proper arrangement and checkingof the leakages by smearingsoap water on the repaired cooling coils after proper testing, removing the nitrogengas from thecoils. Job also includes Descaling of the Air handling units 08 No’s by way of disconnecting of main chiller pipeline from the cooling coil and then descaling of the copper tubes of the coil by circulating the special chemical cleaning agent by pressure pump, cleaning of fins, flushing of the line to c[ear the blockages of the lines and repeating the process till are the blockages are cleared out and then connecting chiller line back to cooling coil, filling the water in the line and tubes/cooling coils. Job also includes dismantling the motor-04 No. from the installed position along with the blowers and then shifting to the workshop for checking their RPM and rewinding of the motors with proper copper wires of specified rating and specification andrepairing the blowers. The job also includes repairing the mainshafts by welding/brazing and making them to the required size on lathe machine and replacement ofthe bearings and pulleys of motor and blowers in place of damaged ones and assembling the motors and shifting back to the site and refitting the same and testing the motor on load after making the electrical connections. Complete job includes cost of labour, material, transportation and all types of taxes.
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