Maritime Geothermal Compressor W-235-AC-P-4S-PP-01

Connect the vacuum pump to the charging manifold

Start the vacuum pump and open the charging manifold valves

Monitor the vacuum gauge until it remains at less than 500 microns for at least 1 minute with the vacuum pump valve closed

Close the charging manifold valves

Shut off and disconnect the vacuum pump

Place a refrigerant tank with the proper refrigerant on a scale and connect it to the charging manifold

Ensure nitrogen is flowing through the system at the lowest flow rate during brazing procedures

Replace the liquid line filter-dryer if the refrigeration system has been exposed to the atmosphere

Place a wet rag around any valves being installed to protect non-metallic seats or seals

Aim the torch flame away from the valve body

Solder only one joint at a time and cool joints down in between

Enter the nitrogen pressure at 10 psig

Enter the nitrogen pressure at 25 psig

Remove the display board cable connector from the control board

Slice off display board standoff heads

Pull the display board from the unit

Remove the display board cable connector from the back of the display board

Place a new display board standoff into each of the four holes in the cabinet

Was there a compressor burnout?

Disconnect piping and remove crankcase heater

Replace the compressor and liquid line filter-dryer

Ensure nitrogen is flowing during brazing procedures

If there was a compressor burnout, charge the unit with new refrigerant and operate for 2 hours

Charge the unit with new refrigerant

Operate the unit continuously for 2 hours

Is there a performance degradation not explained by a refrigeration circuit problem or low loop flow rate?

Loop Disconnection and Flushing

Flush heat exchanger with a lime removing solution.

Is the system performance reduced for warm water open loop systems?