TM 10-8145-222-23
0014
SERVICE CONTINUED
CAUTION
In order to prevent possible contamination to the system and additional maintenance,
use only the correct refrigerant cylinder to pressurize the system. Any other gas or
vapor will contaminate the system and require additional purging and dehydration.
NOTE
Before performing a leak check on the system, it must be charged with refrigerant. If
the system is without refrigerant, charge the system with refrigerant to build pressure
to 30 to 50 psig.
5. Make sure system is charged with refrigerant to a level of 30 to 50 psig.
NOTE
If leak detector is not available, or location of the leak is known as in a repair, use
Nitrogen to pressurize the system and determine with a bubble test.
6. Perform a leak check on all refrigeration system connections using an electronic leak detector to detect
hydrofluorocarbons (HFCs).
7. If any leaks are found, remove refrigerant, repair leaks, and recheck for leaks.
8. If no leaks are found, evacuate and dehydrate the refrigeration unit in accordance with Evacuation and
Dehydration paragraph per this WP.
9. Charge refrigeration unit with refrigerant in accordance with Charge System with Refrigerant paragraph per this
WP.
10. Place MTRCS back into desired mode of operation (TM 10-8145-222-10, Operating Procedures).
0014-11
