Ingersoll-Rand Thermo King CRR DF MPC2000, Maintenance Manual

Page: 113 / 165

Refrigeration Maintenance and Service Operations
112
Refrigerant Leak Test Procedure
Use a reliable Halogen leak detector such as model H10G, P/N 204-712 or 204-756 (portable), to leak test
the refrigeration system. Inspect carefully for signs of compressor oil leakage which is the first sign of a
leak in the refrigeration system.
NOTE: Due to environmental concerns and personal safety, the use of a Halide torch is no longer
recommended.
If refrigerant has leaked or been removed from the R-134a or R-23 refrigeration system:
1. Check entire system for possible component damage and refrigerant oil loss.
2. Attach gauge manifold set (refer to “Gauge Manifold Set Attachment and Purging” for proper
procedures).
3. Attach refrigerant bottle charging hose to center of gauge manifold and purge charging hose of air.
4. Pressurize the system with refrigerant (GAS ONLY) until 345 kPa, 3.45 bar, 50 psig vapor pressure is
achieved.
5. Leak check the system with an electronic leak detector to inspect all joints and connections. (Use soap
solution as an alternative test component.)
If no leaks are found but the system has lost its refrigerant charge, proceed to the next step.
6. Close both hand valves on gauge manifold (front seated).
7. Disconnect the refrigerant charging hose.
1. Add and Remove Compressor Oil at
the Compressor Oil Fitting
Figure 35: Adjusting Compressor Oil Level