Specifications

19,
Install
hand
valve
on
access
valve
and
charge
to factory
specified
charge.
20. Close
hand
valve
and
quickly
remove
it
from
access
valve.
Close
lower
valve
on
charging
cylinder,
using
hand
valve,
slowly
release
refrigerant
con-
tained
in charging
hose.
21.
Put
Tef
lon
tape
on access
valve
threads
and
install
caP
on
access
valve.
(Use
two
wrenches
-
one
on
valve
body,
the
other on
caP.)
22.
Wait
approximately
5
minutes
for
pressure
to equalize,
then
turn
com-
pressor
on
and
check
for
refrigeration.
PROCEDURE
WITH
COMPRESSOR
INOPERATIVE
Fill
charging
cylinder
with at
least
6
ounces
more
refrigerant
than
needed
for
final charge
of system.
Plug
in
charging
cylinder
heater
to
raise
pressure
to 30
lbs. above
ambient
cyl-
inder
pressure.
NOTE:
Maintain
but
do
not exceed
this
30
pound
above
ambient
pressure
un-
til system
is charged.
Braze
permanent
access
valve
on
compressor
discharge
line at
least
4
inches
from compressor
body.
(See
page
3-16,
Steps
1,2, & 3.)
Leak
check
permanent
access
valve
with
refrigerant
gas
from
top valve of
charging
cylinder
connected
through
charging
hose
and
hand
valve
to ac-
cess
valve.
(See
page
3-16, SteP
4.)
Pierce
discharge
tubing
with access
valve,
make
certain
valve
core
is in-
stalled
to
prevent premature
dis-
charge
of
refrigerant.
(See
page
3-16,
Steps
5 &
6.)
lnstall
temporary
piercing
valve
on
compressor
process
stub.
Connect
hand
valve,
charging
hose
and
purge
hose on
discharge
line
ac-
cess
valve.
Connect
purge
hose
to
the temporary
piercing
valve on
compressor
process
stub.
Route
purge
hoses away
from
work
area
-
preferably
outdoors.
NOTE:.
An alternate
method
of
purging
using
a single
purge
hose
plus
an ad-
ditional
three
foot charging
hose and
"T"
adapter
can
be accomplished
bY
connecting
a
three
foot charging
hose
to
the discharge
access
valve
and an-
other
three foot
charging
hose
to
the
piercing
valve. Connect
both
charging
hoses and
the
purge
hose
to the aP-
propriate
connections
on
the
"T"
adapter
and
route the open
end
of
the
purge
hose away
from
the
work area
preferably
outdoors.
5.
6.
1.
7.
2.
3.
4.
3-18