bids are invited for acmc of vrf system for first year - annual comprehensive maintenance contract of bluestar make vrf ac units 12 nos each of 28hp capacity (model no ivrfb-28tcn), 6 nos ahus each of 35 tr capacity including quarterly preventive maintenance visit, supply and replacement of defective parts as per special conditions of contract, attending any number of breakdown calls etc. complete as required. first year , acmc of vrf system for second year - annual comprehensive maintenance contract of bluestar make vrf ac units 12 nos each of 28hp capacity (model no ivrfb-28tcn), 6 nos ahus each of 35 tr capacity including quarterly preventive maintenance visit, supply and replacement of defective parts as per special conditions of contract, attending any number of breakdown calls etc. complete as required. second year , acmc of vrf system for third year - annual comprehensive maintenance contract of bluestar make vrf ac units 12 nos each of 28hp capacity (model no ivrfb-28tcn), 6 nos ahus each of 35 tr capacity including quarterly preventive maintenance visit, supply and replacement of defective parts as per special conditions of contract, attending any number of breakdown calls etc. complete as required. third year , acmc of vrf system for fourth year - annual comprehensive maintenance contract of bluestar make vrf ac units 12 nos each of 28hp capacity (model no ivrfb-28tcn), 6 nos ahus each of 35 tr capacity including quarterly preventive maintenance visit, supply and replacement of defective parts as per special conditions of contract, attending any number of breakdown calls etc. complete as required. fourth year , acmc of vrf system for fifth year - annual comprehensive maintenance contract of bluestar make vrf ac units 12 nos each of 28hp capacity (model no ivrfb-28tcn), 6 nos ahus each of 35 tr capacity including quarterly preventive maintenance visit, supply and replacement of defective parts as per special conditions of contract, attending any number of b