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open or close the air intake opening until a bright orange-red glow is obtained. Carefully hold
the plate in position and retighten the nut(s).
Clean Gas Valve Vent Tube
1. Set the rethermalizer power switch and the gas valve to the OFF position.
2. Carefully unscrew the vent tube from the gas valve. NOTE: The vent tube may be straightened
for ease in removal.
3. Pass a piece of ordinary binding wire (.052 inch diameter) through the tube to remove any
obstruction.
4. Remove the wire, then blow through the tube to ensure it is clear.
5. Reinstall tube and bend so that the opening is pointing downward.
Check Burner Manifold Pressure
DANGER
This task should be performed by qualified service personnel only. The cookpot
must be filled with water during this procedure.
1. Ensure that the gas valve knob is in the OFF position.
2. Remove the pressure tap plug from the gas valve assembly and attach the fitting for a gas
pressure-measuring device to the tap.
Vent Tube
Pressure
Tap Plug
Regulator Cap