repair maintenance of electrical and mechanical services at gpo bldg . , vikas bhawan-ii , delhi . ( sh- running operation and routine maintenance of central ac plant ) , running , operation , routine maintenance , preventive maintenance , minor repair , regular cleaning & servicing etc . of following capacity water cooled chiller at vikas bhawan-ii with accessories i . e condensers and chilled water pumps , chiller pipe line , condenser pipe line , cooling tower , panel boards complete etc as reqeuired ( in one and half shift on all days except sunday & holidays as per enclosed terms & conditions ) ( in one and half shift on all days as per enclosed terms & conditions ) a ) 3 x 400 tr centrifugal chiller b ) 1 x 100 tr centrifugal chiller , running , operation , routine maintenance , preventive maintenance , minor repair , regular cleaning & servicing etc . of different capacity ahus , fcus and air ventilation system in different floor and different location installed at vikas bhawan-ii with all accessories i . e cooling coil , blower , cleaning of filter , electrical panel of ahu , fcu and air ventilation etc . as reqd ( in one and half shift on all days as per enclosed terms & conditions )