bids are invited for comprehensive mntc - comprehensive maintenance of inverter/non-inverter type 1.5 tr split /window ac unit and its associated power feeding arrangement including replacement of faulty spares, charging of refrigerant, replacement of faulty condenser motor and blower motor, replacement of faulty compressor, cleaning of filter, cooling coil and condenser coil etc. for smooth operation of the ac units as detailed in work specification /methodology attached complete as reqd.a) 1.5 tr capacity split /window ac units (173 nos. ac units/month for 24 months) , fault attending - attending initial faults of existing 1.5 tr split /window ac units i/c supplying & fixing of following compatible spare parts for different make of ac units (inverter/non-inverter) available at sites complete with testing, commissioning as required to make the faulty ac unit in satisfactory healthy condition. a) fixed speed compressor (1.5 tr) for ac unit , compressor - b) variable speed compressor (1.5 tr) for ac unit , motor - c) single phase blower fan motor for 1.5 tr ac unit. , condensor motor - d) single phase condenser fan motor for 1.5 tr ac unit. , blade indoor - e) indoor unit fan blade , blade outdoor - f) outdoor unit fan blade , capacitor - g) starting capacitor suitable for compressor unit. , capacitor - h) running capacitor suitable for compressor unit. , capacitor - i) blower motor capacitor. , capacitor - j) condenser motor capacitor. , relay - k) starting relay , thermostal - l) thermostat. , contactor - m) 2-pole , 25amp power contactor (mnx 25 or similar) for ac controller unit , mcb - n) dp sheet steel enclosure on surface/ recess along with 25/32 a 240 v c curve dp mcb. , mcb - o) 25a dp mcb , mcb - p) 5-32a spmcb , pcb - q) pcb (control card for inverter ac unit) , timer - r) cyclic timer (selec 800xc - din rail or similar suitable) , refrigerent - supplying & charging of suitable fresh refrigerant gas in the existing inverter/non-inverter 1.5 tr split / window air-conditioner i/c necessary leak testing, fault rectification, brazing etc with pressure testing etc. complete as required. total quantity : 4403