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MAINTENANCE
IMPORTANT. MAKE SURE THE UNIT IS NOT ELECTRICALLY POWERED BEFORE CARRYING OUT ANY CLEANING OR MAIN-
TENANCE OPERATION. ALL ORDINARY AND EXTRAORDINARY MAINTENANCE OPERATIONS MUST BE CARRIED OUT BY
SPECIALIZED AND AUTHORIZED PERSONNEL, IN ORDER TO ENSURE COMPLIANCE WITH THE CURRENT SAFETY REGU-
LATIONS.
NB .:
always make sure that the power supply lines (of the unit and of the integrative electrical heaters) are disconnected at the start
before carrying out any maintenance operation.
This section is extremely important for efficient operation of the unit during the years. A few operations carried out periodically can
avoid the need to call specialized personnel. The operations to be carried out do not require particular technical knowledge and con-
sist of simple checks of the components of the unit.
Contact an authorized service centre if maintenance is required.
Structure
To prevent noise and strange vibrations to rise make sure that the various steel parts are well fastened together and that the inspec-
tion panels are properly fixed to the unit.
In case of oxidation, treat with paints, suitable to avoid or reduce the problem, the parts of the unit affected.
Hydraulic plant
Visually check that the hydraulic plant is leaks free and is pressurized. Verify there is no air in the circuit (acting on the air vents).
Verify that the filters in the plant are clean.
Electrical plant
Verify that the power supply cable that connects the unit to the distribution panel is not affected by cuts, cracks or alterations that could
compromise the insulation. Contact an authorized service center if maintenance is required. After a first period of time from the first
start up and at every stop or seasonal start up carefully check that each electrical connection is well fixed.
Fans
Verify that the fans are well fixed to the protective grilles and to the structure of the unit. Check any unbalance of the fans pointed out
by anomalous vibrations and noise.
Finned coil
Accidental contact with the exchanger fins can cause small cuts. Use protective gloves to carry out the operations described below.
The exchangers must be able to ensure the maximum heat exchange, therefore their surfaces must always be clear of any dirt and
dust that can present on them due to the action of the fans. Using a brush, remove all the impurities present on the surface of the
coil. Clean the aluminium surface of the coil with a compressed air jet, making sure to aim the jet with the direction of the fins so as to
avoid damages. If the aluminium fins has been damaged, “comb” the coil with a special tool until the damage is completely eliminated.
Finned coil condensate drainage
Verify that, during the defrosting cycles that take place in heating mode, the drainage of the water from the finned pack occurs pro-
perly and that the drainage fitting on the unit basement is not clogged. If the flow is not correct, with low outdoor temperature, a layer
of ice could be generated on the unit basement and the operating of the unit could be compromised.
Maintenance
