provision of annual comprehensive maintenance of equipments installed at various transit facilities at port blair under emu ( r&d ) chandipur , provision of annual comprehensive maintenance of equipments installed at various transit facilities at port blairunder emu ( r&d ) chandipur , acs 1 . 5 ton ( window / split ) including all types of spare parts i . e . gas , compressor , motor , condensor , ac circuit , disply circuit , remote , fan etc , video disply ( tv ) ( led / lcd / portable ) , refrigerator , aqua guard filter , reverse osmosis ( ro ) water purifie , water cooler , washing machine , wet grinder / mixer / juicer , geyser , lpg manifold ( cooking system ) , ep bax