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21
GRILL BURNER AIR ADJUSTMENT:
Each grill burner is tested and adjusted at the factory prior to shipment; however, variations in the local gas sup-
ply or a conversion from one gas type to another may make it necessary to adjust the burners. The flames of the
burners (except the rotisserie burner) should be visually checked and compared to that of the drawing in
Fig. 32. Flames should be blue and stable with no yellow tips (LP units may have some yellow tipping), excessive
noise or lifting. If any of these conditions exist, check if the air shutter or burner ports are blocked by dirt, debris,
spider webs, etc. Proceed with air shutter adjustment. The amount of air which enters a burner is governed by a
metal cup at the inlet of the burner called an air shutter. It is locked in place by a screw which must be loosened
prior to lighting the burner for adjustment.
GRILL BURNER FLAME HEIGHT:
Before beginning, ensure the grill is OFF and cool. To access the grill burner air shutters, first remove the grates
and radiants from the firebox, then remove the grill burner using instructions shown on page 32, Fig. 55. With a
screw driver, loosen the lock screw on the face of the air shutter slightly so that the air shutter can be adjusted.
To Adjust:
1.
Be careful as the burner may be very hot.
2.
If the flame is yellow, indicating insufficient air, turn the airshutter
counterclockwise to allow more air to the burner.
3.
If the flame is noisy and tends to lift away from the burner, indicating
too much air, turn the air shutter clockwise.
Reinstall the U-burner, ensuring the burner is level. Light the burner
and check the flame. If all is okay, remove the burner (CAUTION -
burner may be hot, allow time to cool) and tighten the air shutter
screw. If not repeat the above procedure to readjust the air shutter.
LOW FLAME SETTING ADJUSTMENT:
The valves on the grill feature an adjustable low set-
ting. Due to fluctuations in gas pressure, heating value or or
gas conversion, you may feel it necessary to increase or decrease gas flow
in the low position. We do not recommend adjusting the infrared rotisserie
burner.
To Adjust:
1.
Light the burner.
2.
Turn the control knob to the lowest setting (all the way counter-clockwise).
3.
Remove the knob.
4.
While holding the valve shaft with pliers, insert a thin, flat tipped screwdriver
into the shaft and while viewing the burner adjust to a minimum stable flame
(Fig. 33).
WARNING: IMPORTANT!
Before lighting, inspect the gas supply piping or hose prior to turning the gas “on”. If there is evidence of cuts, wear,
or abrasion, it must be replaced prior to use.
1-1/2"
3/8"
FIG. 32 Burner Flame Height
FIG. 33 Low Setting Adjustment
INSTALLATION
BURNER ADJUSTMENT
OPEN
CLOSE
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