Thermador PRD304EHU Care And Use Manual page 19

ExtraLow Techniques
The type and quantity of food affects which setting to use.
The pan selected affects the setting. Its size, type, material, and whether a lid is
used, all affect the consistency of the cooking temperature.
To maintain a low or simmer heat, bring food to a rolling boil. Stir well, then
cover the pan and lower the heat to a setting just below SIM.
Check periodically to see if the control knob should be turned to another setting.
If an over-size pan is used, the simmer action may occur mainly in the center of
the pan. To equalize the temperature throughout the food, stir the food around
the outer edges of the pan into the food in the center.
It is normal to stir food occasionally while simmering. This is especially impor-
tant when simmering for several hours, such as for a homemade spaghetti
sauce or beans.
When lowering the flame setting, adjust it in small steps.
If the setting is too low to hold a simmer, bring the food back to a boil before re-
setting to a higher heat.
It is normal not to see simmer bubbles immediately after the food has been
stirred.
There may be bubbling when the flame cycles ON and no bubbles when the
flame is OFF. Even when the flame is OFF, there will be steam and a slight
quiver on the liquid's surface.
Figure 6: Igniter
Each burner has its own electronic igniter that sparks when the burner is turned on.
Each burner should light in 4 seconds or less. If a burner does not light, check to
see that the cap is positioned correctly on the base.
_l_ CAUTION
Do not touch the burners when the igniters are sparking.
If a burner fails to ignite, refer to "Before Calling For Service" on Page 45.
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