Air Filter; Fan Motor Assembly - Iom CWAR 01-N-3ALL Manuel D'installation Et De Maintenance

18.5. AIR FILTER

In order for the installation to operate correctly, it is essential to regularly clean the air filter located in the intake
of the indoor unit.
When clogged, the filter reduces the air flow through the heat exchanger of the indoor unit, which in turn reduces
the efficiency of the installation and inhibits the cooling of the fan motor.
Check the cleanness of the indoor heat exchanger.
The filters must be changed at regular intervals. The frequency is dependent on the specific application conditions.
Certain installations, for example in hotels where there large amounts of fluff due to the frequent bedding changes
and the presence of fitted carpets, require more frequent filter changes. It is recommended that the filters are
checked every 60 days during the first year of operation in order to determine the frequency required. If it is not
possible to see light through the filter when it is held up to the sun or in front of a strong light, the filter must be
replaced. A more rigorous standard of cleanliness may be required.
The fan coil unit shall have a filter installed in the return air side. The attachment systems must be
relocked in place after changing the filter.
Non compliance with these instructions can affect the unit's electrical safety and render the qualified
personnel performing the work liable for any ensuing damage.

18.6. FAN MOTOR ASSEMBLY

There is no particular maintenance on fan and motor assembly. All fan coil units utilize permanently lubricated fan
motor bearings.
However during periodic maintenance, check that fan wheel does not touch the housing and adjust, if necessary,
clearance.
If fan motor overload protection open, wait for automatic overload reset and try to determine the cause.
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