comprehensive operation and maintenance of revers osmosis plant along with its allied accessories installed in premises of esic staff quarters sector 56 noida up , operation & maintenance of comprehensive reverse osmosis plant2m3/hr , operation & maintenance of reverse osmosis plant ( 2m3/hr . ) ( lon exchange india ltd . make ) comprising of raw water pumps , chlorine dosing multigrade filters , activated carbon filter r . o . skids , cartridge filters , high pressure pumps , pressure tubes with membranes , chlorination , anti-scalent dosing systems , ph correction systems , digital conductivity meters , piping . three times ro chemical cleaning in a year and upkeep the complete system in good working condition at all times as per scope of work and direction of esic representative should be adhered to ( spares , chemical & consumable ) shall be supplied by contractor . the ro plant shall be operated normally for 14 hrs . /day ( including normal break of 30 minutes once in every three hour ) and/or as & when required on all days of month including holidays .