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ARMY TM 9-4210-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
5-45. TUBING AND FITTINGS.
This task covers:
Inspection
Removal
Installation
INITIAL SETUP:
Tools:
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Personnel: 1
Equipment Conditions:
WARNING
Disconnect input power to the air conditioner before performing any internal maintenance. Voltages
used can KILL. Shutting the unit off at the control panel does not disconnect unit power.
1. Disconnect air conditioner input power at source.
2. Remove covers and panels as necessary to have access to repair area.
NOTE
The refrigeration system contains a number of pieces of copper tubing in a variety of material grades,
sizes, lengths, and shapes, and a number of elbows, tees, and adapters in several sizes.
INSPECTION
Check tubing and fitting for signs of leakage. Leak test if leak is suspected (para 5-15).
REMOVAL
1.
Discharge refrigerant system (para 5-12).
2.
Purge refrigerant system (para 5-13).
3.
Debraze the tube connections (para 5-14).
4.
Remove part.
INSTALLATION
1.
Place replacement part on tube end.
2.
Braze replacement part (para 5-14).
3.
Purge refrigerant system (para 5-13).
4.
Replace drier filter (para 5-26).
5.
Leak test all newly connected joints and those in the repair area (para 5-15).
6.
Evacuate refrigerant system (para 5-16).
7.
Charge refrigerant system (para 5-17).
FOLLOW ON PROCEDURE
1.
Install all covers and panels that were removed.
2.
Connect air conditioner input power at source.
5-100
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