Removal Of Cooling Unit; Installation Of Replacement Cooling Unit - Norcold N109X Series Service Manual

Removing the Refrigerator and Cooling unit (cont.)
N109XIM (ice maker)
a. Disconnect the ice maker water line from the water fill
tube. For newer models (S/N
necessary to remove the condenser retaining screws
first to better access the icemaker fill tube and harness.
b. Disconnect the ice maker wire harness wires (white
and brown wires) from the water valve solenoid.
c. Disconnect the ice maker wire harness ground wire.
d. Remove the two water valve mounting screws and
plastic spacers, then remove the water valve.
1. Remove the fan, bracket assembly, thermostat,
and wiring from the cooling unit.
2. Remove the drip cup retaining screw, then remove
the cup.
3. Remove the burner box cover retaining screw,
then remove the cover.
4. Disconnect the burner tube from the gas valve.
5. Remove the burner retaining screw, then pull out
the burner tube along with the burner.
6. Disconnect the gas valve wires from the power board.
7. Remove the gas valve bracket screws (3), then
remove the gas valve assembly.
8. Remove the spark/sense electrode assembly
retaining screw and remove the spark/sense
electrode assembly from the burner box.
9. Remove the rear angle brace screws (up to four
screws), if present.
10. Pull the refrigerator out of the enclosure.
11. Remove the burner box retaining screws (2), then
remove the burner box.
12. Disconnect the AC power cord from the power board.
13. Remove the power board cover retaining screws
(3), then remove the cover.
14. Disconnect the AC heater wires from power board
terminals AC_HT_LO and AC_HT_HI.
15. Detach the thermistor from the 10th evaporator fin.
16. Remove the freezer plate retaining screws
(eight retaining screws and washers). It may be
necessary to remove the ice bin to do so.
17. Remove the four retaining screws from the
evaporator fin assembly.
18. Cut the tape that seals the four edges of the foam plug.
19. Remove the two absorber bracket retaining screws.
20. Remove the condenser retaining screw(s). See
Figure 32, page 36
21. Separate the cooling unit from the refrigerator
cabinet. To separate:
a. Grab the cooling unit by the liquid heat exchanger.
b. Pull cooling unit upward at a slight angle to unseat the
foam plug.
22. Remove the cooling unit from the cabinet.
36
N109X Models

Installation of Replacement Cooling unit

or later), it may be
The sealant must be applied correctly to prevent air
from being drawn into the cooling unit's high and
low evaporators.
For Icemaker Models, also see page 36
1. Clean the old sealant from the back of the evaporator
plate, fin assembly, cooling unit, and cabinet step.
Use only the NORCOLD approved sealant that is
packaged with the new cooling unit. Do not use
silicon, latex, or other sealant, which may cause
damage to the foam and will greatly reduce cooling
efficiency.
2. Apply a 1/2 inch bead of sealant to the cooling
unit's low and high temperature evaporators, and
all four cabinet plug steps. See Figure 33(a) and
33(b), page 36.
3. Mate the cooling unit foam plug section to the
cabinet step opening. The foam plug must seat
evenly against the cabinet step.
4. Install the condenser retaining screws. Do not
overtighten the condenser retaining screws. Refer
to one of the pictures under Figure 32 that matches
your cabinet serial number for more details.
5. Install the freezer plate screws to the cooling unit
(eight screws with washers). Do not overtighten
the freezer plate screws.
6. Install the fin assembly retaining screws to the cooling
unit (four screws). Do not overtighten fin screws.
7. Attach the thermistor to the 10
right to left).
8. Fasten the absorber brackets of the cooling unit
to the cabinet (two screws). Do not overtighten
retaining screws.
9. Tape all four edges of the foam plug to the cabinet
using HVAC metallic tape or heavy duty duct tape.
10. Reinstall the fan bracket, fan, thermostat, and
wiring. See wiring diagram on the outer surface
of the fan bracket or refer to Figures 42 and 43,
pages 45 and 46.
11. Install the burner box.
12. Install the burner tube and burner assembly. Do
not overtighten fittings.
13. Install the gas valve and connect the burner tube
to the valve. Do not overtighten fittings.
NOtE
CAUTION :
fin (counting from
th
Refrigerator Service Manual