Specifications

5. Install
hand
valve
and
purge
hose
on
access
valve.
Route
purge
hose
away
from work
area
-
preferably
outdoors.
Slowly
open hand
valve
and
discharge
system
for
5 minutes,
with
compressor
not
running.
On units
with
cold freezer
compart-
ments
the
evaporator
can be warmed
to
aid in
purging,
refrigerant.
This
is
accomplished
by
advancing
the
de-
frost timer
to
energize
the
defrost
heaters.
Discharge
system
for
additional
3 mi-
nutes
with
compressor
running,
then
turn
compressor
off.
Remove
purge
hose from
charging
hose.
Remove
hand
valve
f rom
access
valve.
Remove
valve
core. Perform
the re-
pair.
lnstall
a
new
replacement
drier.
Connect
charging
hose
to bottom
of
charging
cylinder.
Attach
hand
vaive
to loose
end of charging
hose.
Purge
charging
hose with
refrigerant
and
close
hand valve.
12. Attach
hand
valve
to
access
valve.
Charge in
4
oz.
of refrigerant
for leak
check.
Close
hand
valve.
Wait
ap-
proximately
5 minutes
for
pressure
to
equalize,
(Leak
check low
side).
13.
Run
compressor
for
3 minutes
to
sweep
system.
(Leak
check high
side).
14.
Close
bottom valve
on charging
cylin-
der,
slowly release
refrigerant
con-
tained
in
charging
hose
by loosening
hose
coupler
at charging
cylinder.
Af-
ter
refrigerant
is released,
disconnect
hose
at charging
cylinder
valve.
CAUTION:
keep
refrigerant
away from
fingers
to'
prevent
physical
damage.
15,
Connect
purge
hose to
loose
end
of
charging
hose,
slowly
open hand
valve
and run
compressor
for
addi-
tional
5 minutes
while
discharging
4
oz. sweep
charge.
16. Remove
hand
valve.
Install
valve
core
before turning
compressor
off.
17.
Turn
compressor
off.
18. Replace
charging
hose
on lower
valve
of charging
cylinder,
purge
hose
with
refrigerant
and
close
hand valve.
6,
7.
8.
9.
10.
11.
3-17