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TM 5-4120-386-14
5-13. REFRIGERATION SYSTEM SERVICING - (LEAK TEST) - Continued.
LOCATION/ITEM
ACTION
REMARKS
( f ) Perform leak tests.
(g) If a leak is found,
discharge and purge the
system and repair leak.
See specific instructions
for components to be
removed.
(h) If a leak was not found and
refrigerant-22 was used to
pressurize the system, see
charging instructions.
(2) To pressurize a system that
has been discharged and purged
for leak testing with an
electronic detector:
( a ) Remove the hose
connection protective caps
from the high and low
pressure service valves.
(b) Connect the hoses from a
charging manifold to the
service valves.
( c ) Connect a cylinder of
refrigerant-22 to the
center hose connection of
the charging manifold.
CAUTION
Connect the refrigerant-22 cylinder so
that only gas will be used for
(d) Open both unit service
valves and the charging
manifold valves.
5-45

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