UT66002766-02
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12 MAINTENANCE
For safety reasons, before carrying out any maintenance or
cleaning jobs, turn o the unit by moving the fan speed se-
lector to “O” and putting o the main switch (0 position).
DANGER! Due caution must be taken while carrying out
maintenance: some metal parts may cause injuries; wear
protective gloves.
The maintenance requirements of FWP-C ducted units are lim-
ited to periodic cleaning of the air lter and heat exchanger and
checks on the eciency of condensate drainage.
Maintenance may be performed only by specialised
personnel.
Whenever starting up the unit after it has not been used for a
long time, check that there is no air in the heat exchanger.
The motor requires no maintenance since it has self-lubricating
bearings.
12.1 CLEANING THE AIR FILTER
Disconnect the unit from the power supply by setting the main
switch on 0 (OFF).
To clean the air lter proceed as follows:
1. Access the unit via the inspection panel and take out the air
lter as shown in (Air lter ):
2. If the lter is on the inside of the intake grille, remove the lat-
ter and then proceed to carry out the steps described below.
3. Clean the lter with warm water or, in the event of dry dust
build-up, using compressed air.
4. Allow the lter to dry and then t it back in place.
» Air filter
12.2 CLEANING THE HEAT EXCHANGER
It It is advisable to check the condition of the exchanger before
the start of every summer season to make sure that the ns are
not obstructed by dirt.
To access the heat exchanger, remove the outlet panel (whether
of the type with collars or a rectangular ange) and the drip tray.
On reaching the exchanger, clean it with compressed air or
low-pressure steam taking care not to damage the ns.
Before the start of every summer season, check the eciency of
condensate drainage.
Adequate periodic maintenance will ensure save both ener-
gy and cost savings.
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