Thermador PALPKITHW Instructions D'installation page 21

• If the low flame performance is not acceptable, it
may be necessary to readjust the valve screw for a
STAR burner that does not have sufficient carry-
over of the low flame. Turn the valve screw slightly
counter-clockwise until carry-over of the flame is
acceptable. (See "Setting the STAR® burner valve
screws" on page 21.)
• If the burner flame is uneven, flutters, makes
excessive noise, or lifts, some of the slots in the
burner base may be blocked with food spillage or
other debris.
• Clogged slots can be cleared using a straightened
paper clip, needle, or similar object. Encrusted
food or debris can sometimes be removed using a
steel wool pad or fine wire brush.
• Burner flames that are "lazy", with excessively-
long flames, can be created by an incorrectly
fitted burner cap—from which many of the outer
mantles of the individual flames will tend to
"coalesce" or blend together. Verify that the
burner cap is seated properly on its burner base.
The cap should fit reasonably flat when correctly-
positioned on the base and not rock significantly.
Correct burner cap
4. Repeat the ignition and flame test procedures for
each rangetop STAR burner.
Setting the STAR
screws
A flat-head screwdriver with a 2.5 mm wide tip (included)
is used to adjust the valve screws.
To set the burner valve screws
1. Turn the knob counterclockwise.
• Standard burners: Turn a full turn until knob
cannot be turned anymore.
• XLO burners: Turn to LOW.
Incorrect burner cap
®
burner valve
2. Remove the knob from the valve stem by slowly
pulling knob straight out, away from the control
panel.
3. To set the burner valve screws on all models
except 8-burner models:
Remove the bezel-mounting screw located to the
right of the valve stem using a T-20 star-head
screwdriver. Insert the included flat-blade
screwdriver into the hole of the bezel mounting
screw.
To set the burner valve screws on 8-burner
models:
Insert the included flat-blade screwdriver into the
hole of the valve stem. The removal of the bezel
screw is not required.
4. Access to the valve screws through the clearance hole
in the spark module. You should feel the engagement
of the screwdriver and the valve screw.
5. Adjust the valve screw by turning the valve screw
th
about an 1/8 turn. Turn the screw clockwise to
reduce simmer flame size. Turn the screw counter-
clockwise to make the simmer flame larger. Adjust the
valve screw as little as required to reach satisfactory
simmer results. Adjustments should be done after the
range has been fully converted. Due to normal
fluctuations in gas pressure, over-adjustment of valve
screw may affect flame stability.
21