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 TM 55-1905-223-24-18-1
Replace R-20 Mechanical Refrigerator - Refrigeration Evaporator Coil.
a. Removal, b. Replacement.
This task covers:
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's,
Electrical power turned OFF at galley
240V power panel. Switch tagged "Out
T o o l kit, electrician's,
of Service - Do Not Operate."
T o o l kit, refrigeration and air
condition, 5180-00-596-1474
Materials/Parts
Warning tags, Item 1, Appendix C
Refrigerant R-12, Item 38, Appendix C
REMOVAL
a.
To store the refrigerant charge in the condensing unit receiver, perform the
following:
(1) Remove grill from cabinet by lifting up and pulling out at bottom of unit.
(2) Remove mount bolt at center of base.
(3) Slide condenser unit and base out of cabinet.
CAUTION
Ensure gauge manifold handwheels are shut before
attaching hose lines to system.
(4) Remove protective cap and attach gauge manifold suction baselines to the
suction service valve connection.
(5) Shut discharge (high pressure) service valve at the receiver.
(6) Turn on power to cabinet.
Change 1
2-336
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