annual repair maintenance of various electrical installations and mechanical equipment at ncc bhawan, sector - 19, rohini, delhi (sh : servicing / repairing of apfc panels)- 1 supply & replacement of ro tfc membrane 75 gpd eureka forbes make i/c testing, commissioning etc. as required old dismantle shall be retained by the contractor. 2 supply and replacement of particulate / sediment/ pre-filter 10 eureka forbes make i/c leak testing, commissioning etc complete as reqd at site. dismantle shall be retained by the contractor. 3 supply and replacement of particulate / sediment/ pre-filter 20 eureka forbes make i/c leak testing, commissioning etc complete as reqd at site. dismantle shall be retained by the contractor. 4 supply and fixing of 20 pre filter assly to prevent of excess silt in feed water to ro machines i/c leak testing, commissioning etc complete as reqd at site. 5 supply and replacement of push type chrome platted brass tap 1/2 for water coolercomplete with testing, & commissioning i/c credit of dismantle material etc. as required 6 supply and replacement of chrome platted brass diverter valve complete with testing, & commissioning i/c credit of dismantle material etc. as required 7 supply and replacement of automated switching on/off device as per level of water in storage tank/ water cooler etc as reqd.