Remove And Clean The Burner Orifice; Warning Attention; Control; Selector Switch - Norcold N180.3 Service Manual

Remove and Clean the Burner Orifice

Clean the burner and the burner orifice annually. To clean the
burner orifice:
1. Close the valve at the vehicle propane gas tank(s).
2. Push and turn the gas control to the OFF (
3. Open the lower intake vent.
4. Remove the burner box cover [165] by removing one (1) screw.

Fig. 8 - Burner Box Location

Fig. 9 - Burner/Orifice Assembly

To avoid possible propane gas leaks,
WARNING
!
always use two (2)wrenches to loosen and
ATTENTION
tighten the gas supply line at the 3/8 inch
male flare fitting.
5. Remove the flare nut from the orifice assembly [1].
6. Remove the orifice assembly from the burner [2].
When cleaning, do not try to remove
WARNING
!
the orifice [3] from the orifice adapter
ATTENTION
[4]. Removal will damage the orifice and
can cause a propane gas leak. Leaking
propane gas can ignite or explode and
result in dangerous personal injury or
death. Do not clean the orifice with a pin
or other objects.
7. Clean the orifice assembly with air pressure and alcohol only.
Using a wrench, assemble the orifice assembly to the burner.
Assemble the flare nut to the orifice assembly. Examine all of
the gas connections for leaks.
N180.3
)
165

Control

207
293
ART 02473

Fig. 10 - Control Locations

No. Description
207 Mode Selector Switch
293 AC Thermostat
217 Flame Meter
216 Piezo Lighter
294 Gas Control
310 AC Power Indicator
311 DC Power Indicator

Selector Switch

The mode selector switch [207] changes the energy source of the
refrigerator between propane gas (
DC electric ( ) and also shuts down the refrigerator at the OFF
( ) position. The mode selector is a manually operated switch
and does not automatically change the operating mode of the
refrigerator.
■ AC Operation
When operating the refrigerator in AC electric mode, the AC
power indicator [310] illuminates and the AC thermostat [293]
controls the temperature setting and also shuts down the refrig-
erator at the OFF (
■ DC Operation
When operating the refrigerator in DC electric mode, the DC
power indicator [311] illuminates.
■ Gas Operation
■ The flame meter [217] shows if a flame is present in the
burner.
■ The piezo igniter [216] makes a spark which ignites the
flame in the burner.
■ When operating the refrigerator in propane gas mode, the
gas control [294] controls the temperature setting and also
shuts down the refrigerator at the OFF (
On fan equipped models, the fan is controlled by a thermostat and
will only operate intermittently when the ambient temperature is
above 100°F (38°C).
The current draw of the fan is 0.24 Amps at 12VDC.
10
310
311
216
217
), AC electric (
) position.
) position.
294
), and
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