Thetford N81 Series Owner's Manual - Through 3/23/06 - Manual (Page 10)

Owner’s Manual 10
Remove the Refrigerator
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 propane gas tank(s).
WARNING: To avoid possible propane gas leaks,
always use two wrenches to loosen and tighten the gas
supply line connections.
2. Remove the black AC power cord and the white ice maker AC
power cord (model N843-IM only) from the receptacle.
3. Remove the DC wiring from the refrigerator:
- Put a mark on the DC wires so you can put them back in the
correct location.
- Remove the burner box cover by removing the screw.
WARNING: To avoid possible propane gas leaks,
always use two wrenches to loosen and tighten the
gas supply line connections.
- Remove the flare nut from the orifice assembly [1] (See
Art00956).
- Remove the burner [2] from the orifice assembly.
WARNING: Do not try to remove the orifice [3] from the
orifice adapter [4] 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.
- 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 connections for gas leaks.
- Clean the burner box.
- Assemble the burner box cover.
- Assemble the drip cup.
Refrigerator Maintenance
Gas flame appearance:
While in GAS operation, examine the appearance of the gas
flame:
- Turn the temperature switch to the COLDEST position.
- Open the lower intake vent.
CAUTION: The burner box cover can be hot. Wear
gloves to avoid burns.
- Remove the burner box cover by removing the screw.
- Look at the gas flame [1] (See Art01605).
- 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.
- Make sure the flame does not touch the inside of the
flue tube [2].
- 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:
Your dealer or Norcold authorized service center must do this
procedure.
Remove and clean the burner orifice (See Art00956):
- Close the valve at the propane gas tank(s).
- Push the selector switch to the OFF position to shut down
the refrigerator.
CAUTION: The burner box cover can be hot. Wear
gloves to avoid burns.
- Open the lower intake vent.
- Remove the drip cup by removing the screw.