28
© STULZ Tecnivel – all rights reserved
EN/11.2020 Technical data subject to modifications
Air Handlers Units
ClimaPac Series
6.4
Plate heat exchanger
Plate 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 firmly attached,
at the same time taking care not to damage the plates and seals;
• hot water or by using a detergent spray (e.g., Decade, ND-150, Chem Zyme, Primasept, PolyDet,
Oakite 86M or the like) to remove greasy deposits, if there is a lot of firmly attached dirt.
Strongly alkaline or other substances corrosive to the fins 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 firmly adhered to the fins), directing the flow of compressed air
against the flow of air through the battery and perpendicular to the fins to avoid deforming them.
• Hot water jet at low pressure (presence of grease or dirt firmly attached to the fins), ensuring that
the direction of the jet is parallel to the flow of air passing through the coil when it is in operation,
avoiding directing the jet with an angle that could deform the fins. 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 fins.
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.
