Subzero WOLF ICB WS Series Service Manual page 57

International W
International W
Heat Exchanger
The upper heat exchanger passes through the ceiling in
the upper compartment and the lower heat exchanger
passes through the back wall in the lower compartment.
NOTES:
• Whenever servicing the sealed system, the refriger-
ant valve assembly (which includes the filter-drier)
MUST be replaced.
• It will be necessary to pull the unit from its installation
and remove the rear duct in order to replace the
lower heat exchanger. See
of this section.
To remove a heat exchanger, first capture the refriger-
ant from the sealed system, then
1. Extract evaporator mounting screws, then pull and
rotate evaporator so heat exchanger is accessible.
2. With a file, score a line around capillary tube, 1" or
less from evaporator inlet, then fatigue capillary
tube at this line until it separates.
3. With a tube-cutter, cut suction tube 1" or less from
evaporator outlet stub, then remove evaporator
from compartment.
4. With a tin snips, or similar tool, cut heat exchanger
in compartment as close as possible to ceiling or
wall where heat exchanger passes through.
5. Use a tube-cutter to cut drier from condenser outlet
tube.
6. Using a tube cutter, cut suction line approximately
1" from compressor.
7. Pull remaining heat exchanger from unit.
NOTES:
Do not sweat tubing apart. Doing so will induce
•
moisture into the sealed system.
When replacing the heat exchanger, it is recommend-
•
ed to attach it at the evaporator end first, then feed
the heat exchanger through hole, up to compressor
area.
ine Storage
ine Storage
WARNINGS at beginning
(See Figure 6-38):
Series
Series
(ICBWS)
(ICBWS)
Heat
Exchanger
Figure 6-38. Heat Exchanger Removal
(Lower Evaporator Shown)
6-19
Component Access/Removal
Cut Here
E v a p o ra to r
#7013455 - Revision A - April, 2009