REPAIR/ MAINT OF 3X80 TR AC PLANT AT EW COMPLEX AND 03X39 TR AC PLANT AT EAGLE COMPLEX AND OTHER WORKS AT AF STN NAJAFGARH UNDER GE (AF) TUGHLAKABAD

Spray painting to AC plants of capacity 3x80 TR of following accessories like as compressors, AHU, condensers, pumps, motors, panels and pipes with two coat of synthetic enamel high glow paint first grade make Berger after preparation/ cleaning of surfaces including write down the MES NO/SM NO complete as specified and directed. Make : Berger / Asian / Nerolac

Material and Labour for checking the leakage by vacuum plant for 24 hrs in both low and high side of the system by feeding dry nitrogen to maintain adequate pressure in the system, plugging the leaks by providing of Teflon tape, sealing of all refrigerant line valves like liquid lines valves/suction/ discharge valves of compressors, gland packing of all angle valves flaring of all AC plant of capacity 3x80 TR complete as specified and directed.

Removing of Alpha filter from its position and layout at site for refixing after clearing, AHU cooling coil using chemical with brass brush in-order to remove all type of sludge/dust precipitated on the coil without any damage to the copper cooling coil then wash the cooling coil with fresh water and air blower to the entire satisfaction of Engr-in-Charge. Cooling coil drain water shall be clean, if any type obstacle is there in the flow of water, iron body of the AHU inside and outside shall be scrapped down and rubbed out with sand paper then apply one coat primer over a coat of synthetic enamel paint including part of duct portion in the AHU shall be completed upto the satisfactory of Engr-in-Charge for the AHU of EW complex AC plant capacity of 3X80 TR complete as specified and directed.

Material and Labour for opening of condenser cover of both sides including disconnecting of water pipe line for inlet and outlet of the condenser of each plant. Removing scale/sludge precipitated in the copper tube by push and pull method with iron rod connected with steel wire brush of suitable size as per condenser copper tube size at the entire length of condenser and scraping down the sludge precipitated inside the tube. Closing both side of condenser and circulating the de-scaling solution in all tubes of three condenser of each plant through the circulating pump and allow to hold it for 30 minutes for chemical reaction Opening the condenser from both sides and clean with iron rod connected with nylon brush of suitable size as per condenser copper tube size at the entire length of condenser ensure that de-scaling process has been complete then closing the condenser at both end and circulating clean water in all the tubes of three condenser of each plant and drain out process to continue till the satisfaction of Engr-in-Charge, then fixing new gasket for both ends of the three condensers of each plant tighten with new nut and bolt for the EW complex AC plant 3X80 TR capacity.

Material and Labour for blocking the punctured tubes of 80TR capacity condensers with brass pillet complete all as specified and directed.

Material and Labour for Vaccum the system and after maintaining vacuum for 24 hours supply and charging refrigerant gas HCFC 22 complete all as specified and directed.

Material and Labour for rewinding of induction electric motor 100 HP capacity of any make and size complete with super enameled copper winding wire of existing gauge to get same capacity of motor including varnishing and replacement of insulated material and replacement of ball bearing No. 80BC03J30X complete all as specified and directed.

Material and Labour for rewinding of induction electric motor 15 HP capacity of any make and size complete with super enameled copper winding wire of existing gauge to get same capacity of motor including varnishing and replacement of insulated material and replacement of ball bearing No. 6201 to 6311 complete all as specified and directed.

Material and Labour for rewinding of induction electric motor 10 HP capacity of any make and size complete with super enameled copper winding wire of existing gauge to get same capacity of motor including varnishing and replacement of insulated material and replacement of ball bearing No. 6201 to 6311 complete all as specified and directed.

Material and Labour for rewinding of induction electric motor 2/3 HP capacity of any make and size complete with super enameled copper winding wire of existing gauge to get same capacity of motor including varnishing and replacement of insulated material and replacement of ball bearing No. 6201 to 6311 complete all as specified and directed.