Providing and fixing ac unit accessories for various type of air-conditioning units at MTNL buildingsunder Zone1 3

Amount

Supply & Instllation of compressor of following type and rating suitable to operate on single phase 220V+/- 10%, 50Hz or three phase 440V+/- 10%, 50Hz AC supply for package/ductable/multi split/split/window AC units complete as required

3.75TR to 5TR scroll/hermetic sealed reciprocating compressor

Supply, installation, testing & commissioning of following accessories for different type of AC units complete as required:

Condenser fan motor for package AC units (5.0TR or above)

Condenser fan motor for ductable AC units (5.0TR or above)

condenser fan blade for package/ductable AC units (5TR or above)

V-belt for package AC units

Blower pulley/motor pulley for package AC units

dryer for package / ductable AC units (5TR to 8.5TR)

contactors for compressor/blower (upto 25amps) for package AC units including electrical connections

overload relay of compressor/blower for package AC units

LP Switch/HP Switch for package/ductable AC units

thermostat for package/ductable AC units

S/I/T/C/ of Ball bearing or gunmetal bush including dismantling of motor and rewinding of existing blower motor (3 phase/ single phase) & and refixing the same for package AC units complete as required.

blower motor up-to and including 3hp rating

blower motor above 3hp rating

S/I/T/C of ball bearing or gunmetal bush including dismantling of motor & rewinding of existing condenser fan motor (3 phase/single phase) & refixing the same for following type of AC units complete as required:

Package AC units (5TR or above)

Ductable AC units (5TR or above)

Supply & installation of thermostatic expansion valve for package/ductable AC units of 5tr to 7.5tr circuit complete as required

S/I/T/C of 10kA to 25kA, 415V, 4-pole MCCB ( B51Amps. To 100Apms.) for package/ductable AC units including electrical connection complete as required.

S/I/T/C of 10kA to 25kA, 415V, 3-pole MCCB (32 Amps. To 40Apms.) for package/ductable AC units including electrical connection complete as required.

Supply & Installation of new condenser coil for 5.0TR/5.5TR existing Package/Ductable AC unit including dismantling of old defective condenser coil with the help of brazing set and deposit the defective coil in the store of same building complete as required.

Supply & Installation of new condenser coil for 7.5TR/8.5TR existing Package/Ductable AC unit including dismantling of old defective condenser coil with the help of brazing set and deposit the defective coil in the store of same building complete as required.

Supply & Installation of new evaporator coil for 5.0TR/5.5TR existing Package/Ductable AC unit including dismantling of old defective Evaporator coil with the help of brazing set and deposit the defective coil in the store of same building complete as required.

Supply & Installation of new evaporator coil for 7.5TR/8.5TR existing Package/Ductable AC unit including dismantling of old defective Evaporator coil with the help of brazing set and deposit the defective coil in the store of same building complete as required.

Supply & Installation of new evaporator coil for 10TR/11TR existing Package/Ductable AC unit including dismantling of old defective Evaporator coil with the help of brazing set and deposit the defective coil in the store of same building complete as required.

supplying of chemical for evaporator coil/condenser coil and chemical wash of evaporator coil/condenser coil of ductable/package AC units complete as required

Supply & installation including nitrogen testing of following nominal sizes of soft drawn/hard drawn copper refrigerant piping for air-conditioning system, complete with fittings, with suitable supports, jointing/brazing including all accessories and dismantling of defective copper pipe and deposit the defective material to desired location in same building as per specifications etc. as required.

6.4mm dia (OD)

9.5mm dia (OD)

12.7mm dia (OD)

15.86mm dia (OD)

22.2mm dia (OD)

7.5TR to 8.5TR ductable type Air cooled AC units S/I/T/C of brass hand shut-off valve of suitable sizes for package AC units of 9TR/10TR complete as required.

S/I/T/C of brass angle valve of suitable sizes for package AC units of 9TR/10TR complete as required

S/I/T/C of capacitor of suitable rating for condenser fan motor and compressor window/split AC un its i/c making connections etc. complete as required

S/I/T/C of capacitor of suitable rating for condenser fan motor and compressor pckage/ductable AC un its i/c making connections etc. complete as required

supply and charging r-22/r-410A/R-407C gas for top-up of refrigerant in the AC units complete as required.

Leakage testing & repairing of leaks with the help of brazing set followed by pressure testing of complete circuit with nitrogen gas, flushing of whole circuit, vacuumizing and commissioning of AC unit complete as required ( each circuit).

Supply & installation of Pillow type ball bearings 2 nos. for blower shaft and dismantling of old ball bearings of package type AC unit complete as required.

S/I/T/C of ball bearing or gunmetal bush & rewinding for condenser fan motor (single phase) for Hi-wall type AC units complete as required

Supply & installation of 2.0TR condenser coil for existing Hi-wall type AC unit complete as required.

Supply & installation of 2.0TR evaporator coil for existing Hi-wall type AC unit complete as required.

Pressure testing for Hi-wall type split AC units with the help of brazing set including flushing of whole system and pressure testing with nitrogen gas, vacuumizing and commissioning of AC unit complete as required.

Supplying & laying of 3C x 2.5sqmm. Flexible copper wire on the existing wall / ceiling for Power / Control cable etc. as reqd.

Providing & making drain arrangement for A/C units with 25mm dia. PVC pipe i/c Tee, Union, Socket & Elbow etc complete as required.

Dimantling of old faulty display and Supply and fixing of new Indoor Unit Display for Package AC units complete as required.

Dismantling of old working compressor from non-working package/ductable AC unit and re-fixing of the same compressor to other working unit including additonal oil, making connections within same location complete as required

Electrical repair work, set right the control wiring in exisiting panel of package/ductable AC unit including replacement of old contactors/relays from non-working machines to working package AC units complete as required.

Dismantling of old condenser unit from one package and refixing it against old faulty condensing unit of other machine in same location including making necessary connections using brazing set complete as requied

Supply and fixing of Single Phase contactors for compressor/blower for Hi-wall type AC units including electrical connections of contactors complete as required.

S/I/T/C of service valves set having 1 no. 5/8" valve & 1 no. 3/8" valve inculding making connections using brazing set at ODU complete as required.