All Heatex’ heat exchangers [...] have been designed in such a way that dirt is prevented from coming into contact with the
heat transfer surfaces. Most of the dirt that is contained in the air will just pass through the heat exchanger since it has
been designed in a correct way.
Substances that have the highest risk of fouling the exchanger are sticky substances that condense on the surfaces and also
fibres from, for instance, dry tumblers.
Experience has shown that the build up of dirt in a heat exchanger is often limited to the first 50 mm in the exchanger, which
simplifies cleaning. For normal ventilation applications, it is mostly satisfactory to clean the inlet and outlet with a brush
or to clean them by using hot water and, if needed, some mild detergent.
For more dirty applications, compressed air or high pressure water flushing can be used provided maximum flushing pressure
with a flat flushing nozzle is kept below 100 bar. Please observe that high pressure flushing must not be made directly against
the plates!
Although the plates in the aluminium heat exchangers are made of material that is up to 0.25 mm thick, care must be taken
when mechanical means to remove dirt is used so that the plates does not deform or brake.
Technical information sheet from the manufacturer Heatex