Specifications

HEAT
EXCHANGER
The following
general
information explains
how
to
successfully
replace the
heat exchanger
for
any
model
covered
in this manual.
REPLACING
HEAT
EXCHANGER
Top Mount Models
lf
a
leak is found
in the heat exchanger
that can't be
repaired, or if tests
prove
that
the capillary
tube is restricted,
the heat
exchanger
must be
replaced as follows:
1. Disconnect
the unit from
power
source.
2.
Install
a
service
valve
as close as
you
can to the tip of
the
process
tube.
Connect a
hose to the
piercing
valve
and
release the
pressure
outdoors.
3.
Remove screws securing
facia
(fa-
cade).
Remove the
screws
from the
divider
channel. Carefuf ly
pull
the di-
vider out
from
under
the
center
hinge.
4.
Pull
and slide
the treezer
chest bottom
out of
the
cabinet.
5.
Lift
and
pull
out
the freezer coil cover.
It is very important
that
this cover be
reinstalled exactly as it was originally.
6.
Remove the air tunnel from the treezer
back.
7. Disconnect the defrost
heater
and
thermostat
wire leads.
8. Lift the treezer coil until
it
clears
the
foam
drip
tray.
9. Working at the cabinet rear,
remove
the
screws
that retain the wire cover.
Cut
the ties that secure the wire
har-
ness to the heat
exchanger.
10. Cut the heat exchanger at
the
point
where rubber
sleeve
is taped.
11.
Straighten
the heat exchanger and
bend
it up about 45 degrees away
f rom
the cabinet at
the
suction seal
plug.
12. Pull the freezer coil and heat exchan-
ger
tubing out
the
cabinet
front.
13. Twist
one bracket
to
disengage
eva-
porator
drip tray from evaporator
tub-
ing.
14. Unsolder
the
capillary
tube and the
suction line from the freezer coil.
15.
Clean
the tubing.
Connect
the replace-
ment heat exchanger to the treezer
coil and solder
all the
joints.
Be care-
ful when unsoldering and soldering
the
joints
on
the treezer
coil
to
prevent
overheating
the
copper
to
aluminum
butt
welds.
16. Visually
check
the
joints
for leaks.
Reinstall evaporator drip tray by en-
gaging
brackets
to
evaporator
tubing.
4-4