annual maintenance of air conditioning and refrigerator after repairing and servicing at board campus board of secondary education bhopal , dismantling & shifting of window air conditioning unit 1 . 0tr/1 . 5tr/2 tr capacity excluding facia & culting , welding work complete as required within town . , dismantling & shifting , installation , testing & commissioning of split air conditioning unit 1 . 0tr/1 . 5tr/2tr capacity including indoor/outdoor unit complete as required withing town . , supply , installation , testing & commissioning of suction/discharge copper pipe line in split air conditioning unit 1 . 0/1 . 5 tr/2 tr/3 tr capacity including brazing , nitrile rubber insulation 6/9mm thich class o etc complete as requiored . , copper tube 1/4 , copper tube 3/8 , copper tube 1/2 , copper tube 5/8 , chemical servicing of window/split air conditioning unit 1tr/1 . 5tr/2 tr/3tr capacity including cleaning of cooling & condensing units , filiters , grills etc & all other parts oling & greasing of fan motor , testing of a . c . unit etc . , gas ( f22 . 410a ) charging of window/split air conditioning unit including flushing of cooling & condensing units with nitrogen gas & rectification of leakage , replacement of filter , flair nut etc . if any . , 1 . 0 tr , 1 . 5 tr , 2 . 0 tr , gas charging of refrigerator upto 300 ltr capacity including flushing of cooling & condensing units with nitrogen gas & rectrification of leakage , replacement of filiter etc . if any . , providing , replacement & connection of thermostat switch of required size & capacity for refrigerator upto 300 ltr capacity including all required material to complete the job . , providing , replacement & connection of starting relay required size & capacity for rerigerator upto 300 ltr capacity including all required material to complete the job . , comprehensive maintenance & servicing of air conditioners of following type & capacity including replacement with new compressor , & related parts such as capacitors , relay , electronic controls , pcb , display , thermostat , remote control , & related accessories , rewinding of fan/blower motor , flushing of cooling & condensing units with nitrogen gas , required refrigerant gas charging & rectification of leaskage , replacement of filiter , flair nut etc . if any . , window type air conditioners , 2 tr , split typw wall mounted air conditioners single phase , 1 . 5 tr , 2 tr , comprehensive maintenance of single/double door refrigerator upto 300 ltr capacity including replacement of compressor , & related parts such as condensor , relay , electronic controls , display , thermostat & related accessories , rewinding of motor , flushing of cooling & condensing units with nitrogen gas , required , refrigerant gas charging & rectrification of leakage , replacement of lamp , etc . if any . , ac insstallation of split type wall mounted air conditioner indoor , outdoor unit fitted with torary compressor , copper condensor and first charge refrigerant r410a , including connection of copper pipe and material supplied with complete unit etc as required ( excluding cost of copper pipe ) , drain piping - providing & fixing of cpvc , 6kg/cm2 drain water piping with fittings , support & insulated with 6mm thich closed cell elastomeric nitile rubber insulation complete as per specification . , 20mmdia id , 25mmdia id , control cable - supply & laying , testing & commissioning of following sizes of copper conductor contorl cables on existing tray icluding fixing clamps & proper connections to equipment etc complete as required . , 4cx4 sqmm