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© STULZ Tecnivel – all rights reserved
EN/02.2021 Technical data subject to modifi cations
Air Handlers Units
ClimaPac Series
6.4
Counterfl ow heat exchanger
Counterfl ow heat exchangers have no moving parts, hence mechanical maintenance is unnecessary.
If there are dirt and dust deposits in the heat exchangers, these can be easily removed, using one of
the following methods:
• with compressed air, in the case of dusty surfaces if there is a lot of dirt, but it is not fi rmly attached,
at the same time taking care not to damage the plates and seals;
• hot water or by using a mild soap to remove greasy deposits, if there is a lot of fi rmly attached dirt.
Strongly alkaline or other substances corrosive to the fi ns or the seal should obviously be avoided.
6.5
Coils (water, direct expansion)
Use protection gloves to avoid injuries caused by sharp edges during maintenance
and cleaning process.
Fins
Fins, usually made of aluminium being part of the exchanger, are particularly delicate and can be
cleaned with one of the following methods:
• Compressed air (if there is dust not fi rmly adhered to the fi ns), directing the fl ow of compressed air
against the fl ow of air through the battery and perpendicular to the fi ns to avoid deforming them.
• Hot water jet at low pressure (presence of grease or dirt fi rmly attached to the fi ns), ensuring that
the direction of the jet is parallel to the fl ow of air passing through the coil when it is in operation,
avoiding directing the jet with an angle that could deform the fi ns. We recommend to use neutral
detergent, taking into account that they do not attack aluminum or copper. Liquid dishwashers are
usually adequate.
Risk of damaging the fi ns.
Do not use high pressure water to clean coils.
Condensate tray
Condensate trays are made of stainless steel and can be cleaned with warm water and neutral soap.
