operation and comprehensive maintenance of electromechanical services at te bldg batala , operation & comprehensive maintenance of following services at te bldg . batala as per specification and details of services ( inventory ) etc . attached , ( a ) e . i . & fans ( b ) pumps ( c ) compound-lighting ( d ) lightning conductor ( e ) sub-station ( f ) e . a . set ( g ) fire detection and alarm , fire extinguishers , fire fighting . ( h ) split a / c unit , window a / c ( i ) package ac plant units ( j ) geysers , providing maintenance free new lead acid batteries as a replacement of existing old batteries of following types / rating complete with first fill of electrolyte & first charging i / c replacement of leads , nut bolts , terminals / thimbles complete as reqd ( the old batteries shall be the property of contractor and rates shall be quoted accordingly ) , 12 v , 150ah , servicing of following capacity dea set from authorized service dealer i / c replacement of fuel filter , lube oil filter , lube oil , coolant etc complete with cleaning of dea set in six months or as per oem recommendation which ever is applicable complete as reqd . ( the dismanled material after services shall be the property of the contractor and rates shall be quoted accordingly ) , 275 kva dea set