Page 107
Component Access/Removal
Integrated (
Integrated (
700-
700-
2) Series
2) Series
7-40
#
3756780
- Revision D - July, 2005
Evaporator / Heat Exchanger Assembly Removal
(All Base Units)
The evaporator / heat exchanger assembly was installed
into the unit by inserting the heat exchanger down through
the hole at top left front of the sump. As the heat exchang-
er is fed through the hole, the side brackets of the evapora-
tor slide down into channels in the sump and the control
board enclosure. The tubing insulation is then installed
over the heat exchanger before it is coiled and attached to
the back of the unit tray area with a P-clamp and screw. At
the unit tray, the heat exchanger is attached to the com-
pressor and filter-drier.
NOTE:
Before attempting to remove the evaporator / heat
exchanger assembly, evacuate the refrigerant from the
sealed system.
To access and remove the evaporator / heat exchanger
assembly, first remove the drawers, drawer closers, drawer
slides, Reed switches, sump cover and back duct. On a
700TR-2, the mullion divider assembly and mullion divider
supports must also be removed, and on a 700BFI-2, the
icemaker assembly must be removed. Since the evapora-
tor / heat exchanger assembly being removed will be
scrapped, use a tin snips or similar tool to cut the heat
exchanger near the hole in the sump.
Disconnect all electrical leads of the components attached
to the evaporator and lift the evaporator from the sump.
NOTE:
You may see a Y-harness between the evaporator
thermistor electrical connections, with wires exiting through
the heat exchanger hole in the sump. This is for factory
test purposes and it can be removed or bypassed.
To remove the rest of the heat exchanger, the kickplate will
need to be removed and the unit tray will need to be slid
out. To slide the unit tray out, extract the two screws that
secure the tray to the unit, located at the front right and left
corners. Grab the front flange of the tray and pull forward.
(See Figure 7-100 on previous page)
NOTE:
It will be necessary to disconnect the compressor
electrical leads in order to pull the tray out far enough to
remove the heat exchanger.
Cut the suction line approximately 2” from the compressor.
Since the filter-drier will be replaced at
the same time, cut the drier inlet tube approximately one
inch from the drier, leaving the capillary tube attached.
Extract the screw which holds the heat
exchanger and P-clamp to the rear of the unit tray area.
Pull the heat exchanger down through the hole at top left
front of the sump and out of the unit tray area.
NOTE:
When installing the replacement evaporator / heat
exchanger assembly, be sure to thoroughly clean the tub-
ing before brazing.
NOTE:
After installing the replacement evaporator / heat
exchanger assembly, apply a bead of silicone around the
heat exchanger where it exits through the hole in the sump.
Figure 7-103. Cut Suction line at compressor
Cut here
Compressor
Figure 7-104. Cut Inlet at Filter-Drier
Cut cable tie
Cut 1” from drier
Figure 7-102. Cut Suction & Capillary Tube at Evap.
In sump, cut tubing with tin snips or similar tool.
Leave capillary tube
attached to drier
