Checking The Flame And Burner Performance - Thermador PALPKITHW5 Installation Instructions Manual

Checking the flame and burner
performance
To observe the burner flames, it may be necessary to turn
off lights or close window blinds to darken the room for
easier viewing of the flame.
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To test the STAR burner ignition
1. Push in the burner control knob and turn it to "HI".
• The igniter electrode and spark module will
produce a clicking sound. Once the air has been
purged from the supply lines, the burner should
light within four seconds.
• The flames should be stable, with no excessive
noise. The inner cones of the individual flames
should be defined and separate from each other.
Portions of the flame, along the burner, should not
exhibit excessive or continuous indications of
"lifting" or "lazy flame".
Dark blue Dark blue Dark blue
Secondary cone Secondary cone Secondary cone
Light blue Light blue Light blue
Primary cone Primary cone Primary cone
NOTE: It is normal for slight yellow tipping of the flames
to appear after a few minutes of operation using Propane
(LP) gas. Orange-colored streaks in the flame are
produced from burning airborne debris; this is normal
during initial start up and should dissipate within a few
minutes of operation.
Yellow flames:
Further adjustment is
required.
Yellow tips on outer cones:
Normal for LP gas
Soft blue flames:
Normal for natural gas
2. Adjust the burner's control valve to "LO" or "SIM" to
see that the flame continues to wrap around the
burner. Blow out the flame, or use a quick fan motion
from a writing tablet or piece of cardboard to
extinguish the flame, and then observe the burner's
ability to reignite and wrap around (also called "carry-
over") the burner within several seconds. This flame
"carry-over" is essential for proper burner ignition and
re-ignition.
3. Test re-ignition of the "XLO
over of the small simmer flames as the XLO system
cycles the burners on and off.
• If the flame performance is not acceptable it may
be necessary to readjust the valve screw for a top
burner that does not have sufficient carry-over of
the flame. Turn the valve screw very slightly
counter-clockwise until carry-over of the flame is
acceptable. (See "Propane (LP) burner orifice
conversion tables").
• 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.
Hard-to-remove, encrusted food or debris can
sometimes be removed using a steel wool pad or
fine wire brush.
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" and observe the carry-
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