DANGER: The user must never touch the
device.
17
Maintenance (must be carried out only by qualified technicians)
Therm 4300 – 6 720 821 607 (2018/01)
Maintenance
1)
If the probe malfunctions, proceed in the following manner:
▶ Unscrew the probe fixing screw.
▶ Detach the ignition unit terminal.
▶ Replace the damaged part and proceed with its assembly
usi
ng the steps indicated in the previous table, in reverse
order.
Operating check
1)
To check the correct operation of the combustion gas probe,
proceed in the following manner:
▶ Remove the combustion gases evacuation pipe.
▶ Replace it with a pipe (approximately 50 cm long) blocked
at on
e end.
▶ The pipe must be routed vertically.
▶ Turn on the heater at nominal power and with the
te
mperature selector adjusted to maximum temperature.
In these conditions, the heater must turn off two minutes
after
wards, at most. Remove the pipe and replace the
evacuation pipe.
7.5 Safe operation/ risk for prolonged use
Prolonged use power wear some elements may cause gas leaks
and transhipment of products of combustion.
Preventively should:
▶ Make a visual inspection of the maint
enance intervals to the
following elements:
–Gas valve
–Combustion chamber
In case of corrosion visible:
▶ Call the intervention of a qualified contractor.
1) These procedures must be performed by a qualified
installer.
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