annual operation repairs and maintenance of electrical installations at regional centre nsg rajarhat kolkata for the year 2020 21 sh comprehensive maintenance of split window type air conditioners and water cooler comprehensive maintenance of split window type air conditioners and water cooler , comprehensive maintenance and service of the following type air conditioners of different makes as per the manufacturers specifications once in quarter & during brake down including testing of leakage & repair , pcb repair , capacitor/sensor replacement & gas top up ( except major parts/spares , compressor , fan motor & gas re-filling ) . as per enclosed terms and conditions & directions of engineer - in - charge complete as required . 1/1 . 5 ton capacity split type air conditioners ( both indoor and outdoor units ) . total 23 nos . split ac x 4 quarter =92job . , comprehensive maintenance and service contract of the following type air conditioners of different makes as per the manufacturers specifications once in quarter & during brake down including testing of leakage & repair , pcb repair , capacitor/sensor replacement & gas top up ( except major parts/spares , compressor , fan motor & gas re-filling ) . as per enclosed terms and conditions & directions of engineer - in - charge complete as required . 1/1 . 5 ton capacity window type air conditioners of different makes . total 18 nos . window ac x 4 quarter = 68 jobs , providing and gas re-filling complete of r-22 refrigerant gas in 1 . 5 ton split type air conditioner pressure not less than 75 psi or specified for different make including testing etc as required . , providing and gas re-filling complete of r-22 refrigerant gas in 1 . 5 ton window air conditioner pressure not less than 75 psi or specified for different make including testing etc as & when required . , supplying and fixing of insulation & raping tape over pipe line inner to outer unit complete as & when required . , supplying and fixing of upvc drain pipe outlet of ( indoor unit drain house ) 25 mm size complete etc as & when required . , replacement of cordless remote suitable for all type of air conditioners etc as & when required . , removing & reinstallation from one site to other site of split type 1 . 5/2 . 0 tonne air conditioners etc complete in all respect including testing & commissioning as per direction of engineer in charge . . , removing & reinstallation from one site to other site of window type 1 . 5/2 . 0 tonne air conditioners in all respect including testing & commissioning , wooden work etc all complete . , supplying and fixing of copper refrigerent pipe of size 1/2 or 1/4 with insulation , suitable for 1 . 0/1 . 5 tonne air conditioner complete etc as & when required . , supplying and fixing of pvc pipe semi rigid 15-25 mm dia suitable for air conditioners all type including complete etc as & when required . , supplying and fixing of compressor suitable for 1 . 5 tonne split/window air conditioner make kirloskar or equivalent make with complete testing etc as & when required . , supplying and fixing of new outdoor motor for 1/1 . 5 ton air conditioners make as specified in old ac or equivalent etc complete as & when required . , providing and re-filling complete of r-134 refrigerant gas in water cooler/ refrigerator pressure not less than 25 psi or specified for different make including testing etc as & when required . , supplying and fixing of pcb boad including testing & fixing of make as specified in old board etc complete as & when required . , supplying and fixing of outdoor unit bracket for split ac . , supplying and fixing of frame for window ac , supplying and fixing of outdoor unit valve for split ac ( 1/2`` , 5/8`` , 1/4`` ) , supplying and fixing outdoor condenser coil copper for split ac