TM 5-3610-257-14
5-20.2. Replace Thermostatic Expansion Valve.
MOS: 52C, Utilities Equipment Repairer
TOOLS: Flat Tip Screwdriver
8 inch Adjustable Wrench
Propane Torch
12 inch Adjustable Wrench
Charging and Testing Manifold
SUPPLIES: Rosin Core Solder (Item 44, Appendix E)
Freon R-12 (Item 19, Appendix E)
Expansion Valve
WARNING
•
Dangerous chemicals are used in this equipment. Death or severe injury may result if
personnel fail to observe safety precautions.
•
Use care to avoid contact with liquid refrigerant or refrigerant gas being discharged under
pressure. Sudden and irreversible tissue damage can result from freezing. Wear thermal
protective gloves and a face protector or goggles in any situation where skin and eye
contact is possible.
•
Prevent contact of refrigerant gas with flame or hot surfaces. Heat causes the refrigerant
to break down and form carbonyl chloride (phosgene), a highly toxic and corrosive gas.
•
Death or serious injury may occur from electrical shock unless power cord is unplugged
before servicing.
a.
Unplug power cord.
b.
Remove covers for access.
c.
Evacuate freon from refrigerant lines.
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