Thermador Pro-Grand PD48 - Manuel (Page 22)

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Flame Adjustment (if necessary):
Tube-style gas burners used in Thermador© appli-
ances have air shutter systems which are similar to
the illustration in Figure 15, and can be adjusted
using the following method (unless adjustment is
not recommended). It is necessary to remove the
burner from the appliance in order to perform air-
shutter adjustments.
• Loosen shutter screw(s) and turn shutter to
new position.
• Adjust the shutter to more-closed position if the
flame is lifting or blowing, or is not carrying over.
Adjust the shutter to more-open position if the
flame is too yellow. (See Figure 15.)
• Retighten the shutter screw(s).
• After adjustment, reinstall the burner and per-
form flame evaluation. The air shutter must fit
over the orifice hood for proper operation of the
burner.
• Repeat procedure as needed until flame char-
acteristics are acceptable. (See Figure 14).
Step 9: Burner Test and Adjustment
WARNING
Burner adjustments must be performed by a
qualified technician. Improper adjustments may
cause harmful by-products or void the
appliance's warranty.
Allow burners to cool before attempting to
remove them!
Call Thermador® if:
1. Any of the burners do not light.
2. Any of the burners continue to burn yellow.
FIG. 15
Air
Shutter
Screw
More Open:
Less Yellow Flame
More Closed:
Less Blue Flame
More Carryover
Less Lifting or Blowing
Air Shutter Adjustment (if necessary)