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 TM 55-1905-219-14-11
5-144. REFRIGERATOR/FREEZER - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
TEST AND ADJUSTMENTS (Cont)
(2) Install low-side gauges, purge the connecting hose and crack the service valve.
(3) Pump the system down until gauge shows zero pound pressure.
(4) Remove dehydrator, replace with new one and be sure inlet and outlet are on proper ends.
(5) Recharge system through suction line service valves. (Refer to step 5).
(6) Backseat all service valves and run the system. Allow enough time for refrigerator to pull down to proper
temperature.
(7) Be sure all flared connections are tight.
c. The exact charge for this system varies. The approximate charge will be two (2) pounds. This charge will give
the best results. Any large variation from this charge will affect the performance. If an exact two pounds cannot be put
in the system, the correct charge is that quantity of Freon 12, which will refrigerate all of the evaporator coil, and at the
same time will not cause frosting or sweating of the suction line. If the system is badly over-charged, open liquid
line service valve and purge gas off. See below for service valve positions.
5-1465
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