bids are invited for custom bid for services - schedule a1 yearly maintenance schedule annual maintenance contract for split type air conditioning units (high wall/cassette) in critical places of various makes for a period of two years over the entire hyb division i.. , custom bid for services - schedule a2 yearly maintenance schedule annual maintenance contract for split type air conditioning units (high wall/cassette) in non- critical locations of various makes for a period of two years over the entire hyb div.. , custom bid for services - schedule a3 yearly maintenance schedule annual maintenance contract for water cooler units in stations of various makes for a period of two years over the entire hyb division including outstations , custom bid for services - schedule a4 provision for replacement of critical parts on conditional and actual need basis list of parts likely to be replaced (pegging cost 60% on total replacement of parts) total quantity :