TM 5-6675-319-14
3-20.2 Replace Thermostatic Expansion Valve.
MOS:
52C, Utilities Equipment Repairer
TOOLS:
Flat Tip Screwdriver
Propane Torch
AC Service Set
12 in. Adjustable Wrench
8 in. Adjustable Wrench
Knife, TL-29
SUPPLIES:
Rosin Core Solder (Item 30, Appendix E)
Freon R-12
Expansion Valve
Electrical Tape (Item 36, Appendix E)
Thermal Gloves
Goggles
E l e c t r i c a l T i es
Thermal Mastic Heat Transfer Compound (Item 16, Appendix E)
A dangerous chemical is used in this equipment. Death or serious injury
may occur if personnel fail to observe safety precautions.
U s e g r e a t c a r e t o a v o i d c o n t a c t w i t h l i q u i d r e f r i g e r a n t o r r e f r i g e r a n t g as
being discharged under pressure.
Sudden and irreversible tissue damage may
occur from freezing.
Wear thermal protective gloves and a face protector
or goggles in any situation where skin and eye contact is possible.
Do not allow refrigerant to come in contact 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 sink power cord.
b. Remove front cover.
c.
Evacuate freon from refrigerant lines.
3-48
