Major Loss of Refrigerant

TM 10-4110-262-13&P

0031 00

WARNING

Be careful oil is hot and may be under pressure. Wear appropriate

safety clothing. Failure to comply may result in serious injury or death to

personnel.

9. Gently remove the compressor oil drain plug until the remaining oil is full.

10. Reinstall the compressor oil drain plug.

NOTE

If all of the oil is removed or replaced, then evacuate the compressor

before opening the service valves.

11. Open compressor suction and discharge service valves, and the receiver tank outlet valve.

12. Place unit in operation and in check oil level.

13. To add compressor oil, perform a compressor pump down. Adjust crankcase pressure slightly

positive and remove the oil fill plug above the oil sight glass.

Major Loss of Refrigerant

In case of a major loss of refrigerant, it must be assumed that some system oil is lost also. The oil level

should be verified by the "Checking the Oil Level" method in this manual.

Oil contamination

Color changed to a varnish color

Presence of contaminants in the oil.

0031 00-5