Kalamazoo AFPO-NG Use And Care Manual page 20

Burner Adjustments
IMPORTANT:
A sooty flame is usually caused by dirt, debris or spider nests blocking the air shutter or orifice.
This is a dangerous condition. The pizza oven should NOT be used until the problem is rectified. If you are not
comfortable addressing the issue yourself, please hire a qualified technician or contact Kalamazoo Outdoor
Gourmet Customer Service at 1.800.868.1699.
To Clean the Air Shutter:
It is possible to visually inspect the air shutter from below without dismantling the unit. The air shutter is
located directly behind the control valve for that burner (See figure 8, air shutters A and E).
Turn off the gas supply shutoff valve or close the main valve on the LP cylinder. Ensure the pizza oven control
knobs are in the OFF position. CAREFULLY rotate and move that corner of the pizza oven to extend no more
than 6 inches off the edge of the countertop (See figures 9 and 10). Use a flashlight to view the screened
openings of the air shutter from below. Remove any obvious obstructions from the screen protecting the air
shutter.
To Adjust the Air Shutter:
It is possible to adjust the air shutter from below without dismantling the unit. The air shutter is located directly
behind the control valve for that burner (See figure 8).
Turn off the gas supply shutoff valve or close the main valve on the LP cylinder. Ensure the pizza oven control
knobs are in the OFF position. CAREFULLY rotate and move that corner of the pizza oven to extend no more
than 6 inches off the edge of the countertop (See figures 9 and 10). Use a screwdriver to loosen the lock screw
(Figure 8: B, F). Be careful not to remove the lock screw. Once loose, you can rotate the air shutter to adjust
the amount of air entering the venturi.
Visually inspect that the gas hose has not been stressed, dislodged or otherwise affected by moving the
pizza oven. If it is safe to do so, and with the pizza oven control knobs in the OFF position, turn on the gas
supply valve or open the main valve on the LP cylinder. Light the burner to be adjusted following the lighting
procedure on page 16. LIGHT ONLY THE BURNER TO BE ADJUSTED. Rotate the air shutter to adjust the
amount of air entering the venturi.
For a lifting flame, progressively close the air shutter until the flame no longer lifts from the burner. For a sooty
flame, progressively open the air shutter until the flame burns cleanly.
Once adjusted to a stable flame that burns cleanly and does not lift, turn the pizza oven control knob to the
OFF position. Tighten the lock screw. Re-light and confirm the adjustment is good. Turn the pizza oven control
knob to the OFF position. Turn off the gas supply shutoff valve or close the main valve on the LP cylinder.
Return the pizza oven to its normal position on the countertop. Once again, visually inspect that the gas hose
has not been stressed, dislodged or otherwise affected by moving the pizza oven.
IMPORTANT:
If the flame from the upper burner is contacting the ceiling inside the pizza oven, contact
Kalamazoo Outdoor Gourmet Customer Service. You may have higher than normal gas pressure and may need
a smaller orifice for this burner.
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