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GENERAL INFORMATION ON CLEANING PROCEDURES
Read the safety instructions at the beginning of this manual and page. 37
Warning: turn off the unit before ordinary and extraordinary maintenance and wait at
least 120 seconds before carrying out any maintenance
You should consult with your supplier of chemical products to choose the most suitable for clean-
ing the unit components.
For the cleaning method refer to the instructions of the detergent manufacturer and carefully
read the safety data sheet (SDS).
As general guidelines, refer to the following rules:
• Always use personal protection (safety shoes, safety glasses, gloves, etc.).
• Use mild products (pH between 8 and 9) for washing and disinfecting, in normal concentrations.
Detergents must not be toxic, corrosive, flammable or abrasive.
• Use a soft cloth or bristle brushes that do not damage the stainless steel surfaces.
• If you use water jets, the pressure should be less than 1.5 bar and the temperature must not exceed 60 °C.
• To clean components like motors, damper motors, bearings, Pitot tubes, filters and electronic sensors
(if applicable), do not spray water directly on them.
• After cleaning make sure that you have not damaged the electrical parts and the gaskets.
• Cleaning operations should not involve the lubricated parts, like impeller shafts, because this could
affect their good operation and create problems with durability.
• For the cleaning of finned components or dampers use an industrial vacuum cleaner and/or a compres-
sor. Attention, the compressed air flow must run opposite to the direction of airflow through the unit.
• To clean plastic components such as tapping points, grommets, cable glands, connecting pipes and
clicks, use a cloth soaked in alcohol. We recommend carrying out the operation during the general
cleaning of the unit and when replacing the filters. If cleaning with the alcohol-soaked cloth is insuffi-
cient, replace the plastic components
CLEANING THE EXCHANGER
Remove the dust and fibres with a soft bristle brush or a vacuum cleaner.
Be careful when cleaning with compressed air because the exchanger package can be damaged.
CLEANING with pressure jets is allowed if the maximum water pressure is 1.5 bar and a flat nozzle
is used (40° - WEG 40/04 type).
Oils, solvents, etc. can be removed with water or hot grease solvents, by washing or immersion.
Periodically clean the condensate drain tray and fill the drain siphon with water.
VENTS
Periodically check that there are no new sources of contamination near the air intake. Each component
must be checked periodically for the presence of contamination, damage and corrosion. The gasket can
be protected with glycerine-based lubricants or replaced with a new one, if worn.
39
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