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ARMY TM 9-4210-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
5-36.
THERMOSTATIC EXPANSION VALVE (LIQUID QUENCH).
This task cover:
Inspection
Adjust
Removal
Disassembly
Repair/Replace
Reassembly
Installation
INITIAL SETUP:
Tools
Tool kit, service, refrigeration unit (Item 1, Appendix )B
Thermometer,. digital (Item 17, Appendix B)
Thermocouple (Item 18, Appendix B)
Personnel: 1
Material: Sealant tape (Item 15, Appendix E)
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 (para 4-45).
INSPECTION
1.
Inspect for evidence of leaks, kinked or damaged capillary line, and loose or missing mounting hardware (see
Figure 5-25).
2.
Check thermal bulb to see that it is securely clamped to the suction line.
3.
If a leak is suspected or indicated, test per paragraph 5-15.
ADJUST
1.
Open manual valve (para 5-39).
2.
Install jumper wires to TB2 (para 4-61 and Figure FO-1) for single mode operation.
3.
Perform a refrigerant pressure check in accordance with para 5-18. Leave gauges attached.
4.
Attach first thermocouple to an exposed surface of suction return line adjacent to sensing bulb.
5.
Attach second thermocouple to suction line at compressor.
6.
Install right front evaporator panel (para 4-25).
7.
Install center front evaporator panel (para 4-22).
8.
Note pressure indicated on gauge and temperature indicated for sensing bulb.
9.
Set air conditioner temperature control thermostat to highest temperature setting.
WARNING
High voltage is used in operation of this equipment. DEATH ON CONTACT may result if personnel fail to
observe safety precautions.
10.
Connect air conditioner input power at source.
5-75
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