How to Pump Out an Ammonia Compressor

Whether you have an ammonia emergency or are doing preventative maintenance, use a pump-out system for your ammonia compressor. Ammonia needs to be pumped out if there is a buildup or before the compressor is cleaned. Ammonia is a hazardous material when inhaled and must be handled with caution. While some ammonia compressors have built-in pump-out systems, other ammonia compressors need to be attached to pump-out systems before they are serviced or repaired.

Adjustable wrench
Bypass valve
Recirculator pump
Low-pressure receiver
System evaporator
Differential pressure valve
Ammonia collection tank

Instructions

- 1
  Turn the bypass valve nozzle in a counterclockwise direction to open the bypass valve using an adjustable wrench. Turn the recirculator pump nozzle in a clockwise direction to close the recirculator pump using an adjustable wrench.
- 2
  Turn the low-pressure receiver nozzle in a counterclockwise direction to open the low-pressure receiver using an adjustable wrench. Turn the system evaporator nozzle in a clockwise direction to close the system evaporator using an adjustable wrench.
- 3
  Turn the differential pressure valve in a counterclockwise direction to open the differential pressure gauge using an adjustable wrench.
- 4
  Wait for the ammonia compressor pressure to lower to 0 psi. Wait time is approximately 8 hours. Check the pressure gauge on the ammonia compressor to make sure that it reads 0 psi. The pump-out system transfers the compressed ammonia into an ammonia storage tank.
- 5
  Turn the bypass valve nozzle in a clockwise direction to close the bypass valve using an adjustable wrench. Turn the low-pressure receiver nozzle in a clockwise direction to close the low-pressure receiver using an adjustable wrench.
- 6
  Turn the ammonia collection tank nozzle in a clockwise direction to close the ammonia collection tank using an adjustable wrench.
- 7
  Remove the pipes connecting the pump-out system to the ammonia compressor. All the valves and nozzles connecting the pump-out system to the ammonia compressor should be closed at this point. Turn the connectors in a counterclockwise direction to loosen them using an adjustable wrench.

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