TM 10-8145-222-23
MAINTAINER MAINTENANCE
REFRIGERATION PIPING
REPAIR
INITIAL SETUP:
Tools and Special Tools
Personnel Required
Face Shield (WP 0097, Item 20)
Utilities Equipment Repairer
Gloves, Rubber (WP 0097, Item 21)
References
Refrigeration Equipment
Tool Kit (supplement) (WP 0096, Table 2, Item 7)
Service Refrigeration Ordnance
Tool Kit (WP 0096, Table 2, Item 6)
Equipment Condition
Refrigeration unit shut down (TM 10-8415-222-10)
REPAIR
Leak Test
WARNING
Never pressurize refrigerant lines with oxygen; mixture with oil could cause an
explosion.
The pressure in a nitrogen cylinder can exceed 2,000 psi. A nitrogen pressure
regulator should be used at all times to avoid personal injury.
Nitrogen is an inert gas that can cause suffocation and must be discharged in a well
ventilated area.
1. Test for leaks at all points of possible leakage using a refrigerant gas leak detector.
2. If a leak is found, take necessary steps to replace damaged components or repair leak in accordance with
applicable work package for component that is leaking.
3. If no leak is found and refrigerant only was used to pressurize the system, refer to charge system with
refrigerant to determine proper charge of system (WP 0014, Service).
4. If no leak was found and nitrogen was used to pressurize the system, recover refrigerant, perform evacuation
and dehydration, and charge system with refrigerant (WP 0014, Service).
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