24
Maintenance and cleaning
Before commencing any servicing operation, make sure that
the appliance is disconnected from the electrical power
supply. Dismantling and assembly are special maintenance
operations and must be entrusted to professional
technicians.
N.B.
Before opening the hatch, loosen the front safety screw.
(fig.28)
Filters
Recommended maintenance intervals: Because levels of air
pollution depend typically on geographical location and are
variable, the life of the filters will be similarly variable. With
this general consideration in mind, the following filter
maintenance intervals are recommended:
Inspect filters: every 50/60 days;
replacement of filters: after 3 or 12 months (UK), 3 or 24 months (NO UK) (depending on the value set by the installer) a
pre-alarm message will appear on the display to remind the user of the need for the filters to be replaced. The filters must
be replaced within 3 months (UK), 2 months (NO UK) after this message appears, otherwise the appliance will shut down
at the end of the 3 months (only UK), activating the filters clogged alarm (Filt). When the error is reset (as described in
"View alarm menu" paragraph), the counter will also be reset.
N.B.
Failure to clean or replace filters can seriously affect system efficiency, causing:
- increased pressure losses in the air circulation system and reduced airflow;
- drop in system performance and comfort levels caused by pressure losses.
N.B.
Clogged air filters are the most frequent cause of the appliance locking up: (Filt)
Removal of filters: fig.29
ENGLISH
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