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ARMY TM 9-4210-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
5-44.
PRESSURE REGULATOR VALVE.
This task cover:
Inspection
Adjust
Repair/Replace
Disassembly
Reassembly
INITIAL SETUP:
Tools
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Thermometer, digital (Item 17, Appendix B)
Material:
Sealant tape (Item 15, Appendix E)
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.
Swing open control box assembly (para 4-45).
3.
Remove clamp securing valve to frame.
INSPECTION
1.
Inspect for evidence of leaks, kinked or damaged capillary lines, and loose or missing mounting hardware (see
Figure 5-33).
2.
Check thermal bulb (13) to see that it is securely clamped in the return air compartment (para 4-41).
3.
If a leak is suspected or indicated, test per paragraph 5-15.
ADJUST
1.
Close manual valve (para 5-39).
2.
Attach a thermocouple and thermometer to an exposed surface of capillary line adjacent to sensing bulb in
supply air compartment.
3.
Set thermostat to lowest temperature setting.
WARNING
High voltage is used in operation of this equipment. DEATH ON CONTACT may result if personnel
fail to observe safety precautions.
4.
Connect air conditioner input power at source.
5.
Start air conditioner in COOL mode.
6.
Allow air conditioner to run about 30 minutes.
5-96
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