4 - ADJUSTMENT OF THE MINIMUM OF THE
TOP BURNERS
In passing from one type of gas to another, the gas
flow must also be changed, considering that in this
position the flamemusthavealengthofabout4mm
and must remain lit even with a brusque passage
from the maximum position to that of minimum.
The flame adjustment is done in the following way:
Turn on the burner.
Turn the tap to the
position
Take off the knob.
With a small screwdriver turn the screw inside the
tap rod to the correct regulation (fig. 6.6).
For G 30/ G 31 gas, tighten up the regulation screw.
–
–
–
–
MINIMUM
3 - ADJUSTMENT OF PRIMARY AIR OF TOP
BURNERS
This operation is to be performed bearing in mind
that the flame may be as specified below,
indipendently of the kind of gas.
The regulating is reached by moving the tube “A”
upwards or downwards according to the kind of gas.
On the table for the choice of the injectors, we have
shown approximately the distance which has to
have the tube A (in respect of the type of burner and
type of gas) from the injector.
Fig. 6.6
19
Flame
correct
Flame
faulty in
primary air
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
distance of
the tube
Air regulating
tube, too open