repair maintenance of e and m services at various office buildings delhi vidhan sabha-dip-ludlow castle wrestling venue and 33 9-shamnath marg . ( comprehensive maintenance of ro system ) , comprehensive maint . of various capacity of ro different makes for one year i / c replacement of all parts like sediment filter , carbon filter , membrane , flow switch , ac / dc adapter , solenoid valve , booster pump , housing of ro etc . the complaint has to be attended with in 4 hours and tds of output water award be between as per site conditions . contractor will handover all the unit in fully functional condition on completion of work . dismantled material will be taken back by the contractor for which necessary rebate shall be considence while quoting the rates ( for 12 months ) i ) 15 lph ( 15 nos . ) , 50 lph ( 9 nos . ) , 150 lph ( 2 nos . ) , 100 lph ( kent ) ( 2 nos . ) , 250 lph ( 1 no . ) , supplying , installation , testing & commissioning of ro system stainless steel designed to deliver 50 lph of purified water through a 6 stage purification process i / c connections etc . as required . ( make: ion exchange / eureka forbes / kent . ) ( note: the firm shall stand one year guarantee / warrantee for the ro system i / c membranes & all accessories )