Part Replacement; Selector Switch; Thermostat; Ac Heater - Norcold N300 Service Manual

Parts Replacement
If the "Troubleshooting Charts" tell you to replace a part, use
the following instructions.

Selector Switch

Removal of refrigerator from enclosure is required for access
to rear of control panel.
Note!
Refer to "Refrigerator" section in this manual for
shut down of power supply and removal of refrigerator
from enclosures.
With refrigerator removed from enclosure:
1. Pull knob from selector switch.
2. Remove screws or nut attaching selector switch to control
panel.
3. Gently remove selector switch from back of control panel.
Caution!
To avoid selector switch damage it is
!
very important follow the steps associated with the
switch being installed.
If replacing Ark-les to Ark-les (Art01020 / Art01021) or
Marquardt to Marquardt (Art635402) selector switch, refer
to Fig. 2 and 3 and do the following steps:
1. Working on one wire at a time, remove and install each wire
in the exact same position on new selector switch.
2. Insert selector switch through rear of control panel.
3. Fasten selector switch to control panel with supplied
screws or nut.
4. Attach control knob to selector switch.
5. Refer to "Refrigerator" section in this manual to install
refrigerator into enclosure and connection of power supply
to complete repair.
If replacing Ark-les selector switch with Marquardt selec-
tor switch, refer to Fig. 1, 2, 3 and do the following steps:
1. It may be necessary to enlarge the control panel's selector
switch hole by using 1/2" drill.
Caution! DO NOT enlarge until you verify how the new
!
switch fi ts into the existing hole!
Ark-les
Terminal
AC1
W1
G3
W3
3-way model
DC2
only
W2
Note: Additional wire length may be required to install selector
switch in control panel. Wires to selector switch may be taped
together in 2-3 places, cut tape and gently pull wires as needed.
Marquardt
Terminals
1a
1b
2a
2b
4a
4b
Fig. 1
2. Working on one wire at a time, remove each wire from the
Ark-les selector switch and install wire on Marquardt selec-
tor switch terminal (Fig.1).
3. Insert plastic plugs into screw holes on front of control
panel.
4. With wires attached, insert selector switch through rear of
control panel, wires facing gas valve.
5. Fasten selector switch to control panel with supplied nut.
6. Attach control knob to selector switch.
7. Refer to "Refrigerator" section in this manual to install re-
frigerator into enclosure and connection of power supply to
complete repair.

Thermostat

1. Close the valve of the propane gas tank(s).
2. Pull the knob off the thermostat.
3. Remove the gas supply line from the inlet fl are fi tting of the
thermostat.
4. Remove the safety valve from the thermostat.
5. Remove the two screws that attach the thermostat to the
bracket.
6. Remove the two red wires from the thermostat.
7. Remove the clips that attach the capillary tube to the cooling
fi n inside the refrigerator.
NOTE: The capillary tube is located on the fi fth cooling fi n from
the right.
8. Gently pull the capillary tube through the back of the refrig-
erator cabinet.
9. To install the replacement thermostat, do steps 1-8 in
reverse.
- Make sure the capillary tube is fl at against the cooling fi n
10. Examine all the gas connections for leaks.

AC heater

1. Remove the AC power cord from the receptacle.
2. To make sure the other energy sources do not activate, turn
the selector switch to the OFF (
3. Remove the two blue wires that connect the AC heater to
the terminal block.
4. Using a utility knife, vertically cut through the insulation that
surrounds the fl ue tube.
) position.
Service Manual N300 Models - 11