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Section XVIII. MAINTENANCE OF REFRIGERATION SYSTEM
4-62. General.
Organizational maintenance of the refrigeration
system is limited to inspection and testing of the
system. Remove top covers, louvers and partially
rem ov
parts
direct
4 - 6 3 .
a.
e junction box as required to gain access to all
of the system. Report any deficiencies to
support maintenance.
Inspection.
Values. Inspect charging valves, solenoid
valves, expansion valves, pressure relief valves and
pressure regulating valves for cracks or damaged
condition. Inspect capillary tubes for kinks or
breaks. Disconnect solenoid valve electrical con-
nectors and check for coil continuity between
terminals.
b. Vibration Eliminators. Check vibration
eliminators for dam aged covering and connections.
c. Coils. Inspect condenser and evaporator coils
for bent or broken fins and for damaged con-
nections.
d. Louver Control Actuator. Inspect cylinder for
cracks and damaged connections. Inspect control
for bent or broken condition.
e. Dehydrator and Receiver. Inspect dehydrator
and receiver for damage.
f. Tubing and Fittings. Inspect tubing for kinks,
cracks or other damage. Inspect fittings for cracks.
4-64. Testing System for Leaks
Check all piping, components, and connections of
the refrigerant system with a General Electric Type
H-2 Halogen Leak Detector unit (or approved
equal). The detector shall be calibrated with a
General Electric LS-20 leak standard (or approved
equal ) for a pure refrigerant leak rate of 0.1 ounce
per year. Any detected leaks exceeding this rate
shall be reported immediately to direct support
maintenance for correction and recharging.
Warning: Avoid bodily contact with liquid
refrigerant and avoid inhaling refrigerant gas.
Be especially careful that refrigerant does not
c o m e i n c o n t a c t w i t h t h e e y e s . I n c a s e of
refrigerant leaks, ventilate area immediately.
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