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14 | Maintenance (must be carried out only by qualified technicians)
7.1
Periodic maintenance work
Functional check
▶ Check the operation of all safety, adjustment and
monitoring elements.
Heat exchanger
▶ Check the heat exchanger is clean.
▶ In case of dirt:
– Remove the heat exchanger and take out the limiter.
– Clean the chamber with a powerful jet of water.
▶ If dirt persists: Soak the plates in hot water with detergent
and clean thoroughly.
▶ If necessary: De-lime the interior of the heat exchanger and
the connection pipes.
▶ Install the heat exchanger using new joints.
▶ Install the limiter on the support.
Burner
▶ Check the burner annually and clean it if necessary.
▶ If it is very dirty (grease, soot): Remove the burner, soak it
in hot water with detergent and clean it thoroughly.
Water filter
▶ Replace the water filter installed in the water valve entry.
WARNING:
Is forbidden to start up the appliance without
water filter correctly assembled.
Burner and pilot injector
▶ Remove and clean the pilot burner.
▶ Remove and clean the pilot injector.
7.2
Startup after maintenance work
▶ Tighten all connections once more.
▶ Read chapter 3 "Use" and chapter 6 "Adjustments".
7.3
Flue gas safety device
DANGER:
The flue gas safety device must not under any
circumstances be switched off, simulated or
replaced by any other component.
Operation and safety precautions
The flue gas safety device checks the effectiveness of flue gas
extraction by the flue. If it is inadequate, the appliance switches
off automatically so that the combustion fumes do not escape
into the room in which the appliance has been installed. The
flue gas safety device resets after a cooling-down period.
6 720 607 845 (2015/05)
If the appliance shuts down while in operation:
▶ ventilate the room.
▶ Wait about 10 minutes then restart the appliance.
If the problem recurs, call an engineer.
DANGER:
The user must never make any modifications
to the flue gas safety device.
Maintenance
If faults occur on the flue gas safety device, proceed as follows:
▶ Undo flue gas safety device fixing screw.
▶ Loosen temperature limiters connectors.
▶ Undo magnetic unit connector.
▶ Remove thermocouple.
▶ Replace damaged component with new one and refit using
the reverse of the procedure set out in the table above.
Function check
Flue gas safety device function check:
▶ Disconnect flue pipe;
▶ Replace with pipe (about 50 cm long) with sealed end;
▶ Fit pipe vertically;
▶ Start up appliance at rated output and set temperature
control to maximum temperature;
Under those conditions, the appliance should shut down
after two minutes. Remove temporary pipe and reconnect
flue pipe.
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