Comprehensive maintenance of different type of air-conditioners in various buildings under Executive Engineer (Electrical) LR, MTNL New Delhi

Amount

All-inclusive annual comprehensive maintenance of following type air-conditioning units as per details given in relevant sections, monitoring and maintaining environmental conditions of conditioned area by deploying the required manpower including specialized manpower & by arranging required tools & plants etc to maintain the environmental conditions of the conditioned-area up-to required standards. a) 5x11 TR package/ductable type AC units.

b) 29x7.5 TR ductable type AC units.

c) 28x5.0 TR / 5.5 TR ductable type AC units.

Replacement of damaged / stolen following size soft/hard copper pipe including cutting, bending, jointing , brazening etc as reqd. for hot and liqid refrigerant line complete as required as per site requirement. a) 5/8"

R/F of kinni foam 9mm thick for thermal insulation of copper piping in order to protect it from air born impurities i/c removal of old insulation etc. complete as reqd.

Replacement of tounout/damaged of Synthetic fibre media washable filters with frame (Efficiency 90% down to 20 microns) for 5 0 TR to 5.5 TR ductable/package a.c. unit i/c removing of existing filters.

Replacement of tounout/damaged of Synthetic fibre media washable filters with frame (Efficiency 90% down to 20 microns) for 7.5 TR to 11.0TR ductable/package a.c. unit i/c removing of existing filters.

Supplying & making M. S. Structure work for cond./ Duct supports/trey support/accoustic grid with following accessories i/c cutting, welding of the same etc as reqd. a) 40mm x 40mm x 5mm M. S. Angle iron.

Replacement of damaged condenser coil of following rating (single/multi circuit) ductable a.c.units including flushing of whole system with nitrogen gas complete as required. (Note: Existing coil to be dismantled without any extra charges wherever required.) a) 5TR / 5.5TR.

Replacement of damaged evaporator coil of following rating (single/multi circuit) ductable AC unit including flushing of whole system with nitrogen gas complete as required. (Note: Existing coil to be dismantled without any extra charges wherever required.) a) 5TR / 5.5TR

Pressure testing with nitrogen gas with nitrogen pressure standing for at least 8 hours, vacummizing & commissioning with appropriate refrigerant (R22/410a/32) i/c supplying & filling the refrigerant for following rating (single/multi circuit) ductable/package AC unit as reqd. a) 5TR/5.5TR

AC Guard CP-Corrosion prevention coating for brazing joints, u band, interconnecting copper piping of indoor and outdoor a.c. units (Note: per job per unit) to be applied wherever corrosive atmosphere damaging coils.

Operation of air cooled type AC units on on all days (including Sunday & Holidays) by deputing trained and experienced operator at site etc as required. (Note: Rates should be quoted for 12 Months. Moreover 1 Job means 1 building.)

M/s Merco Airconditioning Refrigeration Engineers (BID ID -3205244)