bids are invited for job work for repair and maint of mh and ssa central ac plant and ahu , m and lfor filling of refrigerant gas r 407 for central ac plant in topping up as required , supply and fix in repair rubber coupling of motor and compressor , supply and fix in repair v belts for ahu motors of existing size and type , supply and fix in repair contactor of lt panel of ac plant mnx 18 ac supply 230v 50hz 4 pole , supply and fix in repair contactor of lt panel of ac plant mnx 22 ac supply 230v 50hz 3 pole , supply and fix in repair contactor of lt panel of ac plant mnx 25 ac supply 230v 50hz 3 pole , supply and fix in repair contactor of lt panel of ac plant mnx 32 ac supply 230v 50hz 3 pole , suply and fix in repair front mounting add on aux contact block for contactor of lt panel of ac plant mnx a1 or mnx a2 ac 415v 50 hz , supply and fix in repair single phasing preventer of the lt panel of ac plant 3 phase ac 415 volt 50 hz , supply and fix in repair thermal overload relay of range 9 to 15a 14 to 23a type direct mounting on mnx for control panel , s n f in repair contactor of compressor control panel mnx 140 3 phase ac 415v 50hz total quantity : 70