Inspections and maintenance
2 5
Inspections and maintenance performed
professionally and according to a regular
schedule as well as the use of original spare
parts are of the utmost importance for fault-
free operation of the heat stove and to
guarantee its long life.
Maintenance of the appliance is mandatory
in compliance with Laws in force, at the
frequency laid down by D.P.R 412 of August
26, 1993 and subsequent amendments,
concerning the type of fuel used and the heat
stove output.
Failure to perform Inspections and
Maintenance can entail material and
personal damage.
We therefore recommend stipulating an inspection or
maintenance contract.
Inspections help to determine the actual status of the appliance
and to compare it with the nominal status. This is done through
measuring, controls and observation.
Maintenance is required to eliminate any differences between
the actual status and the nominal status. This is normally done
by cleaning, setting and replacing individual components
subject to wear.
Maintenance intervals and their extent are determined by a
specialist based on the status of the appliance ascertained
through inspection.
Inspection and maintenance jobs must be performed in the
order shown on page 26.
Inspection and maintenance instructions
To assure long-ter m functioning of your
appliance and to avoid altering its approved
status, only original Unical spare parts must
be used.
Before proceeding with maintenance, always perform the
following operations:
• Disconnect the electric mains switch.
• Isolate the appliance from the electric mains by means of
an isolated device with a contact opening of at least 3 mm
(e.g. safety devices or power switches) and make sure that
it cannot be re-connected accidentally.
• Close any shut-off valves on the heating flow and return
pipes, as well as the cold water inlet valve.
After having completed all maintenance work, always perform
the following operations:
• Open the heating flow and return pipes, as well as the
cold water inlet valve.
• If necessary, restore the heating system pressure.
• Reconnect the appliance to the electric mains and engage
the switch.
• Make sure the appliance is flue gas tight and watertight.
• Vent the heating system and restore pressure if necessary.
INSPECTIONS AND
MAINTENANCE
6
