SPL REPAIR TO CENTRAL AC PLANT AT PANCHAJANYA AUDITORIUM UNDER GE DRONACHAL

Overhauling of 100 TR Capacity refrigerant compressor of water cooled central AC Plant (Blue Star) comprising the following works: (A) Isolating and Pumping down (i) Pumping down refrigerant gas and isolating compressor from system (ii) safe recovery and storage of refrigerant gas. (B) Dismantling (i) Disconnecting electrical connections, oil lines, and suction & discharge connections. (ii) Dismantling compressor from chiller unit. (C) Opening & Internal Inspection (i) Opening compressor body. (ii) Checking Crankshaft, connecting rods, pistons, cylinders, bearings (iii) Checking rotor/ stator (iv) Checking suction & discharge valves (v) Checking mechanical seal/ shaft seal. (D) Replacement of worn parts (i) Main bearings (ii) Thrust bearing (iii) Gasket & O-rings (iv) Oil seals (v) Shaft seal kit (vi) Valve plates (E) Replacement of compressor oil with approved grade Cleaning & Re-assembly (i) Cleaning of all parts with approved solvent (ii) Re-assembling compressor with new gasket (iii) Proper torque tightening as per OEM (F) Testing and commissioning (i) Vacuuming of system (ii) Charging of refrigerant (if required) (iii) Trial run compressor

Supply and filling of compressor lubricant after draining out old Lubricant complete all as specified and directed. Note : (i) The oil to be supplied in sealed can. (ii) Empty cans will be returned to contractor after consumption of Oil.

M&L de- scaling the shell and tube of condensor by circuilating de-scaling chemical applying for 2 to 3 hours and including opening the end cover of condensor and cleaning inner tubes manually with the help of nylon / wire brush until complete scale to be removed and flush out with fresh water, reassembling the end cover including replacement of gasket, bolts, nuts etc, as required and commissioning for the 100 TR complete all as specified and directed by Engr-in-charge

M&L pumping down the gas of the central AC plant of 100 x 2 TR capacities and including the pressure testing the complete plant by dry nitrogen gas by separating high side and low side, rectifying and sealing the leakage by gas welding / brazing pressure, completely vaccuming the system and re-charging the system with R134a gas or as mentioned in the AC plant system, testing and commissioning complete all as specified and directed:- Note :- Supply only nitrogen gas and refrigerant will be measured and paid separately.

Supply only nitrogen gas for leak testing of central A/C plant system.

Supply, filling and testing of Refrigerant R-134A in the system to its rating capacity to the extent to full fill required temperature conditions and service leak testing and complete all as specified and as per directed. Note:- Labour shall be included in item No 2.

Supply and fix of CI Butterfly Valve of 150mm dia, ISI Marked PN-1.6, having Nitrile/EPDM rubber lining, SS stem, CS/SS Disc, Lever operated, including all jointing material i.e. Nut, Bolt, washer, Packing material etc duly insualted with checking, Testing and commissioning complete all as specified and as per directed.

M&L repair & overhauling of condensor water pump and chilled water pump of 10 to 15 HP and including taking out impeller, cleaning, descaling & greasing to bearings, replacement of unserviceable parts such as bearings DE & NDE, gland flange, etc, cleaning and varnishing the starter and rotar, winding, heating and drying replacement of burnt terminals of motor assembling in the pump with new packing materials nuts, bolts, washers checking alignment connecting all electrical / water connections, checking the vibrations & alignment, RPM, DOR, painting with one coat of synthetic enamel paint after preparing the surfaces, testing the pump set on full load for the 10/15 HP complete all as specified and directed Note :-Lathe work & service charges deemed to be included in the quoted rate. (ii) Worn out spare shall be measured and paid as under :-

Supply only Impeller CI