Specifications

Slowly
open hand
valve
and
tempo-
rary
piercing
valve
and
discharge
system
for
at
least f ive minutes or
until
refrigerant is
completely
released.
On
units with cold freezer compart-
ments
the
evaporator can be
warmed
to aid in
purging
refrigerant.
This
is
accomplished on by advancing
the
defrost
timer to
energize
the defrost
heaters.
Remove hand valve
and
purge
hoses.
Remove valve
core
from
discharge
line access valve.
Remove and replace compressor.
When brazing use a
heat
sink on
the
discharge line to
prevent
damage to
the
"O"
ring seal in the access valve
body.
Remember to remove the tem-
porary piercing
valve
from the inoper-
ative
compressor
process
stub. Do
not install it on the replacement com-
pressorprocess
stub or suction line.
Install a new replacement drier.
12. Connect
charging
hose to bottom of
charging cylinder.
Attach hand valve
to loose
end of charging hose,
13. Purge
charging hose
with refrigerant
and close hand valve.
14. 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.)
Run
compressor for 3
minutes to
sweep system.
(Leak
check
high
side.)
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.
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.
Remove
hand valve, install valve core
before turning compressor off.
20. Turn
compressor off.
21. Replace charging hose on
lower valve
of charging cylinder,
purge
hose with
refrigerant
and close
hand valve.
15.
16.
17.
9.
18.
10.
11.
19.
3-19