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Instructions for the user
37
11.5 Preventive maintenance
This appliance does not need any special maintenance. However, a
few simple operations have to be carried out periodically to prevent
malfunctioning:
Burners: the burners must be cleaned periodically to ensure correct
combustion; make sure that all the openings and flame ports are clean
and free of obstacles, and that the burners rest firmly on their supports.
Gas connection: the gas connection must be checked periodically.
Flexible pipes: if a flexible pipe is used, it must be inspected
periodically (once a year) for leakages: if the surface of the pipe
appears rigid and cracked, disconnect immediately the cooker from the
gas supply and replace the pipe with a new one.
Valves: if the gas valves get stuck or hard to turn, they need to be
cleaned and re-greased; this operation must be carried out by an
authorised person.
12. PROBLEMS AND CAUSES
Each of the following cases is caused by an abnormal operation of the
appliance and should be dealt with by a authorised persons: please
contact your local dealer or Service Center in case you detect any of
these malfunctioning.
PROBLEM CAUSE WHAT TO DO
The flame is very long with
bright yellow tips.
Black deposits on the
bottom of the pans.
Defect of comburent air or
incorrect injectors.
Burner dirty or flame ports
obstructed.
Clean the burner.
Call Service Center if the
problem remains.
The flame is very short and
noisy. The flame moves
Excess of comburent air.
away from the burner ports.
Call Service Center.
The flame extinguishes
when the burner knob is set
to the low flame position.
Incorrect adjustment of
the minimum heat input or
excess of comburent air.
Call Service Center.
The valve knob is hard to
rotate.
Gas valve worn out or
needs lubrification.
Call Service Center.