25
Flame faulty
in primary
air
Flame
correct
Flame with
excess
primary air
long, yellow
and trembling
clear interior
blue cone
short and sharp
too blue interior
cone tending to
detach
CAUSE
air regulating
tube, too
closed
correct di
-
stance of the
tube
air regulating
tube, too
open
Flame
correct
Flame faulty
in primary air
Flame with
excess
primary air
ADJUSTMENT OF THE OVEN BUR-
NER MINIMUM
Considering that in the minimum position
the flame must have a length of about 4
mm and must remain lit even with a bru
-
sque passage from the maximum position
to that of minimum.
The flame adjustment is done in the fol-
lowing way:
•
turn on the burner by setting the ther
-
mostat knob on position
10
(maxi
-
mum.);
•
remove the knob and unscrew the by-
pass screw “
G
” (fig. 7.9) about three
times by passing a small flat screwdri-
ver (Ø 3 mm blade, 100 mm length)
through the panel opening;
•
re-mount the knob and let the oven
heat up for about 10 minutes, then
bring the knob to position
1
(minimum)
to operate the thermostat by-pass;
•
after having removed the knob again
and being very careful not to turn the
tap rod, slowly screw the by-pass
screw “
G
” (fig. 7.9) until you obtain a
flame of 3-4 mm in height.
Normally for LPG (G30/G31), tighten up
the regulation screw.
G
Fig. 7.9
Summary of Contents for EGC 533 CM
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