FIGURE 3 Possible Problems
PROBLEM POSSIBLE EXPLANATION
Gas smell
Possible gas loss:
Check external pipes and connections
Smell of non-burned gas
Check that combustion is proper / Check that gas
consumptions is not excessive / Check that hot
fume circuit is not obstructed / Check that air-
extractor and area ventilation are operating
property
The pilot burner does not light
Check that the electrode is property placed.
There may be a leak in the gas supply pipe or a
problem with the nozzle
The pilot burner goes out
Check that the flame is large enough to heat the
thermal couple
‘’Explosions’’ in the burners
Check gas pressure.
Make sure the pilot burner flame is not too far from
the main burner
The main burner does not light
Check there is a leak in the gas supply pipe or any
problem with the nozzle / The burner parts may be
improperly placed / Check the position of the pilot
burner
2.6 Gate valve
• The valve that regulates the gas inflow offers thermal safety, which makes sure
that the gas flow is interrupted if the flame goes out.
2.7 Regulation of minimum burning
• The (by-pass) valve nozzle has 1,20mm bore and has to be fully screwed for gas
G30. In case of regulation for other gases (G20), the by-pass has to be unscrewed
(by turning the screw anti-clockwise until a clear and regular flame appears). In
order to regulate the by-pass, light the burner at the minimum setting, remove the
handle from the valve and regulate the screw marked with an arrow, until a clear
and regular flame appears. The regulation must be fully screwed when changing
from methane to G.P.L. or must be open in the opposite case.
2.8 Interventions and repairs
• If intervention is necessary in the gate valve, all you have to do is to remove the
handle and the front wall.
• In order to replace the gate valve you need to unscrew the connections in the
following order:
First, the connections of the thermal couple and the pilot burner, then the
connection of the gas outlet and, finally, the connection of the gas inflow.
• Replacing other parts, such as the pilot burner, the thermal couple and the ignition
source is simple, once the base wall is removed.
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