Repair/Maintenance of central AC Plant at A Regt Military Station Kanasar under GE (N) Bikaner

M&L for maintenance and servicing of 01 No Air conditioning plants (Make: Blue Star) having 2x55 TR Air cooled chiller (01 Working and 01 standby) & 2 x AHUs of capacity 55 TR, 10000 CFM installed at Kanasar Mil Stn, by OEM service professional and calibration of all the sensor, gauges connected to the system, checking of refrigerant gas pressure, capillary tube, coils as per AC plant, checking functioning of all motorised actuator/control valve in supply and return duct damper connected to AHU for smooth and efficient functioning, complete all as specified and as directed. Note :- Contractor shall submit the serviceability report.

M&L for identification of leakage location of refrigerant gas by soap bubble test or opening of condensor coil and inserting it whole into Water tank thereafter repairing the copper tube / condenser valves by brazing and making all threaded joint leak proof by sealent, doing vaccum and pressure testing by nitrogen gas and charging of refrigerant gas R407C including transportation of accessories complete all as specified and as directed. Note : (i) All T&P, Nitrogen cylinder, vaccum pump, welding cylinder etc will be provided by contractor and their charge include in the quoted rate in this items.) (ii) The Job include brazing are considered for whole job, small leakege related to thread shall be considered in quoted rate) (iii) Refrigent gas R407C will be supply only under respective item of Sch 'A'.

Supply only refrigerant R407C gas as per standard of UNEP or ISHRAE complete all as specified and as directed.

Supply and fixing in replacement (micro computer control) microprocessor based PLC power supply card / compressor card with RAM (control system with mother board) including display with suitable cord installed in 55 TR chiller unit of make Blue star model XAC2YS-060 having 3 Nos scroll compressor for controlling temperature, compressor cut off/on, sensor input-output interface, solenoid valve & expansion valve controller as per installed on site complete all as specified and as directed.

Supply and fixing in replacement thermal Expansion valve with capillary tube of capacity 30 TR, 104 KW for R407 refrigerant gas installed in 55 TR chiller unit as per installed on site complete all as specified and as directed.

Supply and fixing in replacement thermal Expansion valve with capillary tube of capacity 18 TR, 63 KW for R407 refrigerant gas installed in 55 TR chiller unit as per installed on site complete all as specified and as directed.

Supply and fixing in replacement solenoid valve along with operating coil as per installed in 55 TR chiller unit complete all as specified and as directed.

M&L for cleaning/flushing the condenser fins and cooling coil of 55 TR Plant with CTC chemical, flushing the system of suction, discharge, liquid line and all valves by using nitrogen and CTC chemical complete all specified and directed.

Supply and fixing in replacement the Hot water generator tank elements of 6000 W after flushing the system of suction, discharge, liquid line and all valves and making hot water pump functional with proper necessary servicing by using CTC chemical and making operational complete all specified and directed.

Supply and fixing in replacement electronic High Pressure and Low Pressure transducer/ transmitter of range 0 to 10 bar with glanded cable upto 5 metre as per installed in 55 TR chiller unit complete all as specified and directed.