Compressor Pump Down

[taz24]

Thanks Taz,

The pressure switches are attached to the COMPRESSOR HEAD cover.

Will I be able to save refrigerant if I pump it into the LIQUID RECEIVER before I isolate and open the compressor?

Can the compressor pump all the refrigerant into the LIQUID RECEIVER and CONDENSER without undergoing a high pressure failure?





KETTLER

I would just shut the suction valve while the comp is running. Then when the comp shuts down shut the discharge valve. The amount of gas in the comp will be minimal. To get the pressure even lower short out the lp switch and let the comp run into a vac. When all valves are closed vent the discharge gas from the comp head back to the suction and that will reduce further any gas loses.
Change the switches and then test like normal.

taz.