3-20. MAINTENANCE PROCEDURES.
a.
This section contains instructions covering direct/general maintenance fun-
ctions for the photographic processing sink.
P e r s o n n e l r e q u i r e d a r e l i s t e d o n l y if
the task requires more than one.
b. After completing each maintenance procedure, perform operational check to be
sure that equipment is properly functioning.
INDEX
PROCEDURE
PARAGRAPH
Replace Compressor Assembly . . . . . . . . . . . . . . . . . . . . . . 3-20.1
Replace Thermostatic Expansion Valve . . . . . . . . . . . . . . . . . 3-20.2
Replace Solenoid Valve.... . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20.3
3-20.1 Replace Compressor Assembly.
MOS: 52C, Utilities Equipment Repairer
TOOLS: Flat Tip Screwdriver
8 in. Adjustable Wrench
Propane Torch
AC Service Set
SUPPLIES: Rosin Core Solder (Item 30, Appendix E)
Freon R-12
Compressor Assembly
Thermal Protective Gloves
Goggles
WARNING
3-46
A dangerous chemical is used in this equipment. Death or serious injury
may occur if personnel fail to observe safety precautions.
Use great care to avoid contact with liquid refrigerant or refrigerant gas
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.
TM 5-6675-319-14
