9
MAINTENANCE
For safety reasons, before carrying out any maintenance or
cleaning jobs, turn off the unit by moving the fan speed se-
lector to "OFF" and putting off the main switch 0 (OFF).
Any work must be carried out by personnel qualified and au-
thorised to work on this type of unit.
DANGER!
Due caution must be taken while carrying out
maintenance: some metal parts may cause injuries; wear
protective gloves.
The material must undergo maintenance in order to retain its
characteristics over time. Lack of maintenance may have the
CLEANING THE AIR FILTER
Clean the air filter at least once a month and in any case at the
start of the period of use (before the heating and the air condi-
tioning season).
To clean the air filter, proceed as follows (Figure 21):
1. Before performing any work on the unit, disconnect it from
the power supply.
2. Remove the screws (1) securing the retainers (2) on each
side.
3. To open the grille (3), push on the two retainers (2) in the
direction of the arrow.
4. Open the grille (3) downwards.
5. Remove the filter (4) from the grille.
6. Use a vacuum cleaner to remove dust. If dust is glued to the
filter, remove it with clean or soapy water, rinse the filter with
clean water and dry it.
7. Put the filter back into its place in the grille, close the grille,
moving the two retainers outwards, then put the screws se-
curing the retainers back in place.
It is recommended to replace the air filter once a year, using an
original replacement filter; the indoor unit model can be found
on the identification plate located on the tank inside the unit,
behind the air filter.
9.1
CLEANING THE AIR INTAKE GRILLE
The grille can be removed for cleaning. (Fig.22 )
Ū After opening the grille (5), detach the safety cable (6) of the
control panel (7) (remember to attach it again after mainte-
nance and cleaning).
Ū Lift the grille and pull it towards you to release the two
hinges
Ū Clean the grille gently using a soft sponge, then dry well. A
neutral detergent can be used to remove difficult residues.
Rinse well with water, then dry.
Ū Never use harsh chemical solvents.
Ū Do not use excessively hot water to clean the unit.
effect of voiding the product warranty. The operations consist of
cleaning the air filter, the internal and external exchangers, the
cabinet, and cleaning and protecting the condensate drip trays.
Odour treatment and disinfection of the surfaces and spaces al-
so contribute to the healthiness of the air breathed by users.
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.
Before the period of operation in the cooling mode, check that
condensate is properly drained.
Adequate periodic maintenance will ensure save both ener-
gy and cost savings.
» Fig�21
» Fig�22
37
WC66000401