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Connect
the
gouge set
to
the
com-
pressor service volves.
Close
the
compound
gouge
hond
volve
ond "crack" ihe
suction
service
volve. Note
the
pressure,
the
system
rr.ust
be completely dischorged.
Open the high
pressure
gouge
hond
volve.
"Bock
seot" the
dischorge
service
vo lve.
Check
the
compressor
oil
level,
odd
oil
if
required.
Stort
the
engine
ond
operote
the
cornpressor
intermittently
one
or
two
seconds
ot
o
time opproxirnotely
three
or iour
times. Then
operote
the
com-
pressor continuously, observe
the
com-
pound
gcruge.
An eflcienl
compressor
will
pump
o
vocuum
of l2
inches
minimum,
very quickly
(Fig.
19).
FIGURE
I9
-
Volve
Positions
for
Evocuotion
/MPORIANI:
Do
not
run
more
lhon
o
lew
minules
os
if
is
possi-
ble
to
domage
lhe
compressor.
lf
o
12"
minimum vocuum
connot
be
ottoined
the
compressor
volves
ore
defective
or
o
leok
exists
in the
system.
When
o
vocuum
is ottoined,
close
the high
pressuTe
gouge
hond
volve
ond
immediotely
stop
the
compressor.
"Crack"
the dischorge
service volve.
The vocuum should remoin
constont
for
severol
minutes.
If
the
vocuum
drops
it
is
on
indico-
tion
of
o
leok in
the
system
or
gouge
con
neclions.
Leok
test
the
system
to
locote
the
ieok
ond
evocuote.
ALL
SEASON AIR
CONDITIONING
LEAK
TEST PROCEDURE
Connect
o
Freon
drum
to
the
gouge
sel
center hose. Loosen
the
center
hose
connection
ot the
monifold,
Hold-
ing the drum upright
(volve
ot
top)
"crack"
the
Freon
drum volve.
Air
in
the
center
line
will be
purged
by
the
Freon
gos.Hond
tighten
the
hose
co
n
nection.
Open
the
high
pressure
gouge
hond
volve
to
odmit
Freon
into the
system
for
o portiol
chorge
(Figure
20).
The
gouge
set
will
lndicote the
pres-
sure
in
both
sides
of
the
system.
Externol leoks
ore
detected
ond
Io-
coted
with
Holide
Torch,
Tool
J-6084.
FIGURE
20
-
Volve
Positions
for
Vopor
Stote Chorging
The
torch
uses
propone fuel
ond
is
equipped
with
on
"Exploring
Tube."
Air
drown into the tube by the
torch,
contocts
o
heoted
copper
reoctor
ring
in
the
torch.
lf
Freon
gos is
present
in
the
sompled
oir, the
normolly
light
blue
flome
will
chonge
to o
green
col-
or.
The
color
will
ronge
from
o
yellow
to
green
or
blue
to
purple
occording
to lhe
omount
of
Freon
present.
Holide Torch Operotion
Open the
Holide
Torch
volve
slight-
ly ond light.
When
the
copper
reoctor
ring
is
hot
(glows) odiust
the
flome
to
:s"
obove
+he
reoctor
ring.
The
smoller flome is
more
sensitive
to
Freon.
Hold
the
open end
of the
exploring
tube
close
io
eoch
ioint ond
connec-
tion
possing
the end oround
the
joint.
Freon
gos is heovier thon
oir,
there-
fore
leoks
moy
be
more
reodily
de-
tected on
the lower
side
of
the
oreos
being
checked.
CAUIION, Avoid breothing
lhe
poisonous fumes
ond
b/ock
smoke
produced when
Freon
is
odded
fo
the torch
flome.
FIGURE
21
Holide Leok
Delector
t-6084
Correct
oll
leoks, dischorge,
evocu-
ote, ond leok test
before
fully
chorg-
ing the
system.
A
mixture
of
Lithorge
ond
Glycerine
moy
be
used
to
seol threoded
con-
nections.
Correct
leoks
ot
solder ioints
using
silver solder ond silver solder flux.
CAUI/ON: Never solder
on
fhe
system
until
Freon hos been
com-
pletely
dischorged
ond
evocu-
oled.
CHARGING THE
SYSTEM
The
normol chorge
is
2/3
pounds of
Freon-|2 with 6
c.c.
of
methonol.
lf the
methonol
hos
not been
odded
to the
Freon
in the
drum
then
it
must
be odded when
chorging
the
system.
Evocuote
f
he
system.
Pour
the
methonol
into
the
gouge
set center
hose; connect
the
Freon
drum
to the gouge
set
centdr
hose.
The Freon
drum should be heoted
in
the
prescribed monner
to
increose
the
pressure
in the drum.
lnvert
the
drum
so
the vopor
will
push
the
Iiquid into the
system.
Ooen the high
pressure
hond
volve
7
T
L
I
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