Filter; Heating Coils; Cross Flow Heat Exchanger - Dantherm DanX 2/4 XKS Installation, Commissioning And Service Manual

5. MAINTENANCE

5.5 Filter

If the filters are equipped with a pressure transducer the control panel automatically gives an
alarm when the filters have to be changed. Still every 6 month the filters should be checked
for damage/leakages which will not be detected by the pressure transmitter. If no pressure
transmitter is installed the following steps should be taken every 6 month:
Check the filter for dirt and damage.
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Measure the pressure loss over the filter which should not be below 150 Pa (G3/G4)
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or 250 Pa (F5/F7). If the pressure loss is higher the filters have to be changed.
Open the filter rail by the blue handles (1).
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Take out the filters (2) and check the gasket on the filter rail for damage.
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Clean the filter rail and reinstall the old/new filters.
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5.6 Heating coil
The following steps should be taken to maintain the heating coil:
Check the coils for dust or dirt. If necessary, clean the aluminium fins by a soft brush
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or a vacuum cleaner.
Straighten any bent slats using appropriate tools
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Air the coil circuits through the exhaust valves of the pipe system (air in the pipe
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system may reduce the capacity)
Check that the frost sensor is properly fixed.
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5.7 Cross flow heat exchanger

The cross flow heat exchanger has no mechanical part, therefore only the plates should be
checked and cleaned if necessary. Clean the plates with a soft brush or use high pressure
cleaner with compressed air and blow against the air stream.
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