operation and comprehensive maintenance of electromechanical services at telecom compound model colony , pune , comprehensive maintenance and round the clock operation of various electromechanical services as per details given in relevant sections by deploying the required staff including specialized manpower and by arranging required tools and plant etc to keep all the services operational upto the required standards except item nos . 2 & 3 below which shall be paid extra as per running hours of dg sets . , a ) services included are 1 ) ei & fans2 ) compound lighting3 ) lightning conductor4 ) pumps5 ) 2 x 500 kva , 11 kv , indoor substation6 ) ( 2 x 550 kva ) e/a set7 ) fire detection and alarm system8 ) 6 x 7 tr , 4 x 10 tr , 2 x 5 tr & 3 x 5 tr a/c package plants9 ) split a/c units 10 ) fire extinguishers , contractors to take all steps to undertake preventive / special maintenance and testing to keep the system at optimum working condition . size of various services is given in section - i b ) minimum staff requiredwireman ( semiskilled ) : 1 no . per shift in 3 shifts ( wiremen shall have under gone a/c training ) note:-1 ) if more persons are required for satisfactory operation , the same shall be arranged by the firm at no extra cost . 2 ) 2 x 7 tr high precision a/c package plant for operation only . , servicing & routine maintenance ( b check ) of following capacity of dg set complete with cleaning of air cleaner element , replacement of engine lube oil of proper grade ( seal pack of reputed make ) , replacement of lube oil filter elements , replacement of fuel filter elements , check & reset injector pressure , check & reset injector pump timing , retighten cylinder head nuts , adjust engine valve clearance , replacement of radiator water by fresh distilled water with addition of coolant additive concentrate , cleaning of radiator fins , drain sediments from water separator , check inlet air restriction , check air piping , belt tensions i/c cleaning & dedusting of alternator , control panel , fuel tank , tightening & maintaining of all hose connections , electrical connections , battery connections etc & actual load testing of dg set after servicing etc . as directed . , i ) 550 kva dg set , supplying & fixing of fully charged 12 volt , 180ah lead acid maintenance free battery for starting of 550 kva dg set complete with end sockets etc . note-1 ) the battery ( s ) of each dg set shall be replaced ( measurable basis ) once during currency of contract & agency shall consider rebate for old battery while quoting of rates . additional requirement to be borne by agency without extra cost .