Thetford N300 - Manuel (Page 7)

Installation and Owner’s Manual 7
Refrigerator Maintenance
Gas flame appearance:
While in propane gas operation, examine the appearance of the
gas flame:
- Turn the thermostat to the 5 position.
- Open the lower intake vent.
CAUTION: The burner box cover can be hot. Wear
gloves to avoid burns.
- Open the burner box door [165] and look at the gas flame
[75] (See Art00955 and Art01255).
The flame should be:
- a darker blue color on the inside of the flame and a
lighter blue color on the outside of the flame.
- a constant shape without flickering.
- Contact your dealer or Norcold authorized service center
if the flame is:
- yellow
- flickering or changing shape.
- If the flame is yellow or has an erratic and unstable
shape, contact your dealer or Norcold authorized
service center.
- Make sure the flame does not touch the inside of the
flue tube [76].
- If the flame touches the inside of the flue tube, contact
your dealer or Norcold authorized service center.
- Close the burner box door.
Remove and clean the burner orifice:
NOTE: Your dealer or Norcold authorized service center must do
this procedure.
To remove and clean the burner orifice:
- Close the valve at the gas tank(s).
- Close the manual shut off valve of the refrigerator.
- Turn the selector switch to the OFF position ( ).
- Open the lower intake vent.
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Remove the Refrigerator
NOTE: Your dealer or Norcold authorized service center must do
this procedure.
CAUTION: The rear of the refrigerator has sharp edges
and corners. To prevent cuts or abrasions when working
on the refrigerator, be careful and wear cut resistant
gloves.
1. Close the valve at the gas tank(s).
WARNING: To avoid possible propane gas leaks, always
use two wrenches to loosen and tighten the gas supply
line at the refrigerator’s manual shut off valve.
2. Open the lower intake vent and remove the gas supply line
from the manual shut off valve of the refrigerator.
CAUTION: The burner box cover can be hot. Wear
gloves to avoid burns.
- Remove the burner box cover by removing one screw.
WARNING: To avoid possible propane gas leaks,
always use two wrenches to loosen and tighten the gas
supply line at the refrigerator’s manual shut off valve.
- Remove the flare nut from the orifice assembly [77] (See
Art00956).
- Remove the orifice assembly from the burner [78].
WARNING: Do not try to remove the orifice [79] from
the orifice adapter [80] when cleaning. Removal will
damage the orifice and seal of the orifice and can cause
a propane gas leak. Leaking propane gas can ignite or
explode which can result in dangerous personal injury
or death. Do not clean the orifice with a pin or other
objects.a
- Clean the orifice assembly with air pressure and alcohol only.
- Using a wrench, assemble the orifice assembly to the the
burner.
- Assemble the flare nut to the orifice assembly.
- Tighten the flare nut by hand.
- Hold the orifice assembly securely and, using a wrench,
tighten the flare nut 1/4 revolution only.
- Examine all of the connections for gas leaks.
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