repair maintenance of electrical and mechanical services at gpo bldg . , vikas bhawan-ii , delhi . ( sh - repairing of 400 and 100tr capacity carrier make control ac plant ) , supply & replacement of following defective spare parts of 400 tr capacity control a . c . plant ( model no . 19 xr ) installed at vikas bhawan-ii , delhi-54 . i / c dismantling testing & commissioning etc as reqd . a ) compressor oil - 75 ltrs . b ) oil filter - 2 nos c ) drier filter - 2 nos d ) oil reclaim strainer - 2 nos e ) ism card - 2 nos , dismantling of vfd for 400 tr capacity a . c plant i / c visual testing , reforming , trouble shooting & performing testing etc as reqd . , dismantling of end caps for 400 tr capacity condenser machine & discaling in the same with the help of chemical & pump set i / c circulation of chemical , roding & brussing and supply & replacement of defective nut-bolts , washer & gasket etc . i / c testing commissioning etc as reqd . , dismantling of insulation end caps for 400 tr capacity evaporator & discaling in the same with the help of chemical & pump set etc i / c circulation of chemical and fixing of insulation , nut-blots , washer and gasket etc . i / c testing commissioning etc as reqd . , servicing of 400 tr cap . chillar and vfd panel with the help of dry nitrogen , testing on cold / static mode etc . as reqd . , supply & replacement of following defective spare parts of 100 tr capacity control a . c plant ( model no . 30 hyx ) installed at vikas bhawan-ii , delhi-54 . a ) mb board - 1 no . b ) compressor oil - 19 ltrs . c ) external oil filter - 1 no . d ) internal oil fitler - 1 no . e ) drier core - 2 nos . , dismantling of end caps for 100 tr capacity condenser machine & discaling in the same with the help of chemical & pump set i / c circullation of chemical , roding & brussing and supply & replacement of defective nut-bolts , washer & gasket etc . i / c testing commissioning etc as reqd . , dismantling of insulation end caps for 100 tr capacity evaporator & discaling in the same with the help of chemical & pump set etc i / c circulation of chemical and fixing of insulation , nut-blots , washer and gasket etc . i / c testing commissioning etc as reqd .