Chrysler Conquest 1988 Service Manual page 960

24-84
AIR CONDITIONING
- Service Adjustment Procedures
2011627
CHARGING THE SYSTEM
The refrigerant system must have been evacuated using the
previous procedure before charging.
Charge using only R-l 2 refrigerant. R-12 is available in bulk ~I
tanks or small cans. Follow the safety precautions for handling
R-12 as listed in the beginning of this group.
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CHARGING WITH SMALL CANS
When using drsposable cans_.ot this type, follow carefully the
can manufacturers Instructtons.
Caution
Never use these cans to charge into the high pressure side
of the system (compressor discharge port) or into a system
that is at high temperature, because the high system
pressures could be transferred into the charging can
causing it to explode.
Keep the refrigerant manrtold valves capped when not In use. i
Keep a supply of extra refrigerant-can-to-refngeran?Gmanifold
gaskets on hand so that gaskets can be replaced periodically.
This will insure a sood seal wrthout excessive tighter$ng of the L
can or the manifold nuts. _
(I 1 Attach center hose from manifold gauge set to-retngerant
dispensing manifold. Turn_ refrigerant manifold valves corn-
pletely counterclockwrseso they are fully open. Remove '
protectrve caps from refrigerant manifold
(2) Screw refrrgerant cans rnro manifold. Be sure $nifold-to-c-
can gasket IS In place and In good condition. Tighten can
and manifold nuts to 8~0 1 i Nm (6 to 8 ft.&). =
(3) Turn refric@%nt manrtold valves completely clockwise to ?
puncture the cans and close the manifold valves.
(4) Purge the art- from the~~charging line by loosening the
charging hose at the gauge set manifold and turnrng one of 1~
the refrigerant valves counterclockwise~ to release re-+
fngerant. When the retngerant gas starts escaping from the
loose connection, re-tighten the hose.
_
Caution
Never heat small refrigerant cans over 52°C (125°F) as
they may explode.
(5) Fully open all retrigerant manifold valves berng used and _
place the cans of retrqerant Into a pan containing 52°C
(I 25°F) water. The waterwill warm the charging can and aid
in the transfer of the charge Into the system. Place the-?
water pan and refrigerant cans on a scale and. note- the
weight.
(6) Jump the low pressure-switch terminals located on the
-.
recerver dri;er so the clutch will remain engagjd.
.~
(7) Start the engrne and move the controls to A/C-switch ON -
and low blower posrtron.
The low pressure switch will prevent the clutch from
engagrng until refrigerant IS added to the system. If the
clutch does engage, repface the switch before proceedings
any further
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