39
Flame correct
Flame faulty in
primary air
Flame with excess
primary air
LEFT and RIGHT OVENS:
REGULATING OF THE OVEN BURNER
MINIMUM
In the minimum position the flame must
have a length of about 4 mm and must re-
main lit even with a brusque passage from
the maximum position to that of minimum.
Left oven:
to be effected only for the oven
burner (as the grill burner has an only fixed
input).
The flame adjustment is done in the fol
-
lowing way:
Light the oven taking the knob to maxi-
•
mum position (
).
Remove the knob and by a thin
•
screwdriver (3 mm section - 100 mm
long) unscrew of about a half turn the
screw by-pass “
G
”, passing through
the front panel hole (fig. 10.16)
Fit the knob and let the oven heat for
•
10 minutes, then take the knob to mini-
mum position (
130)
allowing the ther-
mostat to work under by-pass.
After further removal of the knob, stop
•
slowly the screw by-pass “
G
” (being
careful not to turn the knob rod) until
the flame reaches 3-4 mm high.
Normally for LPG, tighten up the regu-
lation screw.
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
G
Fig. 10.16
