bids are invited for o and m of ac units and water coolers - operation and maintenance of split ac units, cassette ac units, tower ac units, ductable ac units, water fountain and water coolers installed in terminal building and ancillary buildings as per duty roster on all days including holidays 1 highly skilled, 1 skilled, 2 unskilled, as per the special conditions of contract attached and as per the instructions of the engineer in charge. note the labours deployed under this item can carry out aicmc and installation works under this contract. rate shall be quoted accordingly. , all inclusive acmc of following air- conditioners - all inclusive annual comprehensive maintenance contract of following air- conditioners including the involved accessories such as stabilizers and timers, all necessary spares, consumables, filters, compressors etc. carrying out preventive maintenance checks daily or monthly or quarterly or half yearly or yearly, break down maintenance and emergency call service etc. to keep the equipment in perfect working condition by deploying man power etc. complete as required. 1.5 or 2.0 ton split or cassette ac unit , all inclusive acmc of following air- conditioners - all inclusive annual comprehensive maintenance contract of following air- conditioners including the involved accessories such as stabilizers and timers, all necessary spares, consumables, filters, compressors etc. carrying out preventive maintenance checks daily or monthly or quarterly or half yearly or yearly, break down maintenance and emergency call service etc. to keep the equipment in perfect working condition by deploying man power etc. complete as required. 3.0 or 4.0 ton split or cassette or floor mounting ac unit , all inclusive acmc of following air- conditioners - all inclusive annual comprehensive maintenance contract of following air- conditioners including the involved accessories such as stabilizers and timers, all necessary spares, consumables, filters, compressors et