Maritime Geothermal Compressor W-185-H-P-5D-PP-01

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 a warm water open loop system?

Take a picture of the control board and connectors for reference

Remove all green terminal strips from the control board

Remove the red six pin display board connector from the left side of the control board

Remove all connectors from the top of the control board

Remove the control board from its four corner standoffs

Remove any remaining standoffs from the old control board

Remove the new control board from the static bag

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 new display board standoffs into cabinet holes

Was there a compressor burn out?

Dispose of refrigerant according to local codes

Disconnect piping and remove crankcase heater

Replace the compressor and liquid line filter-dryer

Ensure nitrogen is flowing during brazing procedures

Charge the unit with new refrigerant and operate for 2 hours

Pump down the unit and replace the filter-dryer

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