CUSTOM
AIR
CONDITIONING
1A-5
II
—*.
TO
W
CONDENSE!
J-5725-01
^bss^^^^2^
J
"
6272
REFRIGERANT-12
valve and valve on refrigerant drum to allow more
refrigerant
to enter system. Close valve when re-
ceiver-dehydrator clears up.
NOTE:
If air
inlet
temperature
is
below
70°F.
when
this
check is
made,
bubbles
may
appear
even
though the proper
amount
of refrigerant is in the
system.
Air
inlet
temperature
must
be
70°F.
or
above
to
make
an accurate check.
8. When refrigerant has been installed, continue
to operate system and
test
for proper operation as
outlined under
OPERATIONAL
TEST.
9. When satisfied that air conditioning system is
operating properly,
stop
engine, remove
gauge
set
and
replace protective caps on
P.O.A.
valve and
compressor fittings.
NOTE:
A considerable
amount
of refrigerant will
collect in the high pressure line, since
some
of
this
refrigerant will
have
condensed
into
liquid
refrigerant. Wrap the high pressure
gauge
fitting
at the compressor
with
a shop cloth before dis-
connecting the Schrader
valve
from the
gauge
fit-
ting,
to
prevent
injury to personnel.
10. Using leak detector J 6085, check complete
system for leaks, as explained under
LEAK
DETECTORS.
Fig.
1A-3
Schematic
-
Charging
Refrigeration
System
REFRIGERANT-12
DISPOSABLE
CAN
METHOD
After
having depressurized, repaired (if neces-
sary),
and evacuated the refrigerant system, the
system may be charged as follows when using Re-
frigerant-12 disposable cans:
1. Obtain four (for
Firebird)
or five (for Pontiac
or
Tempest) "one" pound cans of Refrigerant-12.
2. Mount three cans in J
6272
No. 3 Multi-opener
or
attach J 6271
Fitz-All
valve (single can opener
valve) on one can.
CAUTION:
Make sure
outlet
valve
on opener is
closed (clockwise) before installing opener.
a.
If the J
6272
No. 3 Multi-opener is used,
raise
locking lever, position three cans of re-
frigerant
and force locking lever down to secure
cans and at same time puncture top of can to make
it
ready for charging.
b. If the J 6271
Fitz-All
valve is used, back
off the valve from the can top retainer, slip the
valve on to the can and
turn
the valve into re-
tainer
until tight. DO NOT open
outlet
valve during
this operation as turning the valve into the re-
tainer
punctures top of can to make it ready for
charging.
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