Alfresco AGBQ-30, Replacement Manual

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Page 14
BURNER ADJUSTMENT:
As a final step it is now necessary to adjust some burners for the correct air / gas mixture. All
burners operate in the same fashion with the exception of the gas valves.
Gas valves for Sear-Zone™ and Rotisserie burners have a direct feeding valves. Gas valves for
“U” shaped and Smoker burners have “idling” valves. “Idling” valves permit adjustment for the “LOW”
setting in the valve to prevent the flame from going out, so they require adjustment when changing the
gas supply type.
“Direct” feed valves do not have a “LOW” adjustment because they are designed for high BTUH
and high gas flow operation such a the one required on Sear-Zone™ and Rotisserie burners. These
burners will not go out even on their lowest setting. They are designed to run always on HIGH setting, so
there is no adjustment necessary after a gas supply change.
To adjust idling valves on “U” burners and Smoker burners follow the next steps:
VALVE
STEM
(Figure 31)
FLAT
SCREWDRIVER
(Figure 32)
ADJUSTMENT
LOCK SCREW
AIR MIX
ADJUSTOR
“U” BURNER
Your unit is now fully converted to a new gas supply and ready for use.
1– Verify that all burner holes are clean and free of debris.
2– Turn the valve to “HI” and light up the burner by pressing
the igniter button. Let the unit “WARM UP” for 10 minutes.
3– Once the burner is lit and warmed up, turn to “LOW” setting.
If the flame starts to go out you must adjust the “IDLE” port
inside the valve.
4– Using a small flat screwdriver, insert the screwdriver blade
through the stem of the valve and adjust.
Counter clockwise for MORE gas flow, clockwise for less.
(Figure 31)
5– Adjust the flame so the burner is fully lit around the perimeter
when the knob is in the LOW position.
6- “U” burners also have an AIR INLET adjustment. If the flame around the perimeter of the burner
seems to detach from the burner body, too much air is being injected into the burner. Adjust the
air / gas mix by loosening the adjustment lock screw and turn clockwise for LESS air, counter
clockwise for MORE.
(Figure 32) .
If the flame turns yellow in color, there is not enough AIR into the gas mixture. Adjust the air inlet
until the flame is light blue in color with small yellow tips for proper burning. You might need to
repeat step 4 and 6 a few times to find an adequate balance.