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4.2
Yearly maintenance
We recommend performing a more thorough and precise maintenance of the
apparatus once every season.
All the maintenance operations to be performed on a yearly basis need to be
carried out with the heater cold and disconnected from the household mains
power supply.
Disconnection from the household mains power supply is obtained by means
of two simple operations: the first consists of turning off the switch placed at
the back of the heater and the second of removing the product power cable
(from the socket on the wall or from the rear of the apparatus).
A check should be made of the gaskets that ensure that the combustion chamber is
airtight in order to prevent excessive wear and tear from causing irregularities in the
combustion process. Open the window and check that the gasket which ensures
that the combustion chamber is closed tight is unbroken.
Figure 4.6: Fire door gaskets
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