operation and routine maintenance of water softening plant , operation & routine maintenance automatic water softening plant of ion exchange make at thyagraj stadium new delhi in one shift i . e . 9 am to 5 pm on all days of the month i/c sunday & holidays by deputing one operator and khallasi as per terms & conditions attached i/c comprising the following . ( a ) in stadium basement . i ) softener - 2 setii ) activated carbon filter - 2 setiii ) pressure filter - 2 setiv ) sodium hypochloride dosing system-2 set ( b ) in ac plant basementi ) softener - 1 setii ) pressure filter - 1 setiii ) hydro pneumatic pump 7 . 5 hp with panel - 1 set iv ) sodium hypochloride dosing system - 1 set , extra for additional hours required for operation & routine maintenance automatic water softening plant as and when required . , necessary provision for charging of salt including cartage etc as required .