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Page Title:
REFRIGERATION SYSTEM SERVICING (PRESSURE TESTING) |
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 TM 9-4120-425-14&P
REFRIGERATION SYSTEM SERVICING (PRESSURE TESTING)
THIS WORK PACKAGE COVERS:
Service (Pressure Testing)
INITIAL SETUP:
Maintenance Level
Direct Support
Tools and Special Tools
Tool Kit, General Mechanics (Item 1, Table 2, WP 0118-00)
Tool Kit, Service, Refrigeration Unit (Item 2, Table 2, WP 0118-00)
Mask, Air Filtering (Item 29, Table 1, WP 0121-00)
References
WP 0118-00 (MAC)
Equipment Condition
Main power source is disconnected.
SERVICE PRESSURE TESTING
WARNING
Disconnect air conditioner power.
WARNING
Be sure that the manifold hoses are correctly connected. BLUE Hose = Low
Pressure, RED Hose = High Pressure.
Service Valve Access Cover
1.
Remove screws from service valve access cover.
2.
Remove service valve access cover.
Charging Valve Caps
Remove caps from high and low pressure service valves.
Refrigeration System Pressure Testing
1.
Connect low pressure gauge hose of manifold valve to suction service valve.
2.
Check that manifold valves are closed.
3.
Connect high pressure hose of manifold valves to discharge service valve.
4.
Purge hoses - open momentarily and close discharge and suction hose connections at charging manifold.
0055-00-1
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