8.2 Periodic maintenance work
8.1 Remove from the front
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19
1
2
ÿ Pull the front slightly towards you.
Functional check
To disassemble the combustion chamber:
– Gas screw connections: HFT 1 v 5 (8 709 918 010).
ÿ Only use original replacement parts.
– In hydraulic unions: Unisilikon L 641 (8 709 918
[1] Burner fixing screws to the back
[2] Power selector
ÿ Remove the front.
Maintenance (only for specialized and qualified technicians)
ÿ Check that all safety, regulation and verification elements are
working properly.
ÿ Close all water and gas shutoff devices.
ÿ Remove the screws securing the pilot burner support [2].
ÿ Ensure that the gas distribution pipe injectors are never
dismantled.
ÿ Your device should only be serviced by a branded Technical
Assistance Station.
hands:
ÿ Loosen the 2 front fixing screws [3].
[1] Temperature/flow selector
Escapes!
ÿ Remove the combustion chamber fixing bar from the
Fig. 17
ÿ Remove the temperature/flow selector [1].
ÿ Loosen the connection between the pilot tube and the pilot valve.
combustion chamber
ÿ Replace the dismantled gaskets and o-rings with new ones.
413 0).
Fig. 18
ÿ Push the front upwards.
Especially when the maintenance operation is carried out
with the appliance on the wall, there is a risk that gaskets and
o-rings are not correctly positioned.
ÿ Order replacement parts in accordance with the device's spare
parts list.
ÿ Remove the screws that secure the burner to the back [1].
[3] Fixing screws
Gas/water leak.
mine.
ÿ Only the following greases should be used:
ÿ Remove the power selector [2].
Fig. 16 Removing the front
ÿ Ensure that all gaskets and o-rings are well positioned when
assembling.
NOTICE:
new.
ÿ Disconnect all connections to sensors, control devices, ignition
and ionization electrodes.
[2] Pilot burner support fixing screws
Fig. 19
Machine Translated by Google