DRAFT
NOT FOR PUBLIC RELEASE
39
www.norcold.com/cda N500/N510 ModelsRefrigerator Service Manual
Installation of Replacement Cooling Unit.
1. Clean old sealant from back of evaporator plate, fin
assembly, and cabinet step.
2. Apply a 1/2" bead of sealant to the replacement
cooling unit’s low and high temperature evaporators
and to the foam plug. See Figure 35.
3. Install the cooling unit into the refrigerator cabinet by
inserting the foam plug into the cabinet step opening
and pressing down firmly. The foam plug must seat
evenly against the cabinet step.
4. Install the longest freezer plate screw along with
washer into the third hole from the left.
5. Install the three remaining freezer plate screws and
washers.
6. Install the absorber retaining screws.
7. Install the four fin assembly screws.
8. Tape the edge of the foam plug to the cabinet. Use
HVAC metallic tape or heavy duty duct tape. See
Figure 31.
N510 units
a. Install thermistor on 5th fin.
b. Thread thermistor wires through back of
refrigerator cabinet and through split loom
tubing.
c. Connect wires to P1 connector terminals 8 and
13. See Figure 34 for terminal location.
d. Plug P1 connector into power board.
e. Tape thermistor wiring to foam plug.
Units with fan:
a. Install fan wiring. Refer to wiring diagram on
the outer surface of the fan bracket or refer to
Figure 48, page 55.
b. Install thermostat on the first condenser fin.
c. Install bracket.
d. Install fan onto bracket.
9. Align the burner box with the cabinet, then install
burner box retaining screws.
Figure 34. Disconnecting thermistor from P1
connector
Terminal 8
Terminal 13
P1 Connector
Pin extractor
tool
!
CAUTION:
Do not overtighten retaining screws and gas fittings
throughout this procedure. Overtightening screws and
fittings may strip screws and fittings.
8. Remove the four retaining screws and washers from
the freezer plate.
9. Remove the four retaining screws from the fin
assembly.
10. Cut or remove the tape around the edge of the foam
plug.
11. Remove the two absorber bracket retaining screws.
12. Separate the cooling unit from the refrigerator
cabinet:
a. Grab the cooling unit by the liquid heat
exchanger.
b. Pull the cooling unit upward at a slight angle to
unseat the foam plug, then pull the cooling unit
from the refrigerator.
Figure 35. Application of sealant
Foam plug step
1/2 in. bead
of sealant
High temp
evaporator
1/2 in. bead of
sealant
Low temp
evaporator
1/2 in. bead
of sealant
Thermistor/
capillary tube
wiring opening
The sealant must be applied correctly to prevent air from
being drawn into the cooling unit’s high and low
evaporators.
NOTE
Ensure the burner box is in position at the base of the
cabinet before installing the cooling unit.
NOTE
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