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AIR
CONDITIONING
SYSTEM
- Refrigeration System
AC-13
Connection
......
2.
INSTALL REFRIGERANT
CONTAINER
TAP VALVE
CAUTION:
Observe the
precautions listed
in
the
front of
this
section.
{a)
Before installing
the valve
on the
refrigerant
con
·
tainer.
turn the
handle
counterclockwise until the
valve needle is fully retracted.
(b) Turn the
disc
counterclockwise
unti
l
it
reaches
its
highest position.
Screw down the
vatve
on the refrigerant container
.
(c) Connect
the
center
hose
to
the
valve fitting.
Turn
the
disc
fully
clockwise
by
hand.
(d)
Turn the
handle clockwise to make a hole in
the
sealed tap.
(e)
Turn the handle fully counterclockwise
to
f ill
the
center
hose with
gas. Do
not
open the
high
and low
pressure valves.
{f)
Loosen
the
center hose nut connected
to the
center
fitting of
the
mani
fold gauge
until
a hiss
can
be heard.
Allow
air to escape
for
a
few
seconds, and
then
tighten the nut.
3.
TEST SYSTEM FOR LEAKS
NOTE:
A her evacuating the system, check for leaks.
(a)
Install the refrigerant container tap
va-lve
as
described
in
step
2.
(b) Open the
high
pressure valve
to
charge the system
with refrigerant vapor.
(c)
When the low
pressure
gauge reads
1
kg/em'
(
14
psi
,
98
kPa)
,
close the
high
pressure
valve.
(d) Using a halide gas leak detector, propane
torch,
or
e lectric leak
detector.
check the system for leaks.
If
a leak is
found, repair
the faulty component or
connec·
t ion
.
(e)
After checking and repairing the system, perform the
following:
•
Turn the
container tap
handle fully clockwise.
•
Disconnect the
center
hose from the can valve fit·
ting.
•
Evacuate
the system
for
at least 15 minute.
(See step 1 on
page
AC-12)
4.
CHARGE EMPTY SYSTEM
(LIQUID)
NOTE
:
This s-tep
is
to charge an empty
system
through
the
high pressure
side
with refrigerant
in
a
liquid
state.
When the
refrigerant container
is
held ups-ide
down,
re·
frigerant will enter the system as a
liquid.
CAUTION:
•
Never run the engine when charging the system through
the high pressure side.
•
Do not open the low pressure valve when the system
is being
charged
with liquid refrigerant.
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