Cleaning and maintenance
2500 h / annually
17
Clean heat exchanger and downdraft channel
Remove the internal cover between the secondary
combustion chamber and the heat exchanger.
Fig. 2-24: Internal cover
Brush out the downdraft channel and remove the flue
ash from the heat exchanger, for example with an
ash vacuum.
Fig. 2-25: Heat exchanger and downdraft channel
After cleaning, replace the internal cover. Ensure that
it is firmly seated.
Clean lambda probe
Vacuum out the head of the lambda probe using a
vacuum cleaner. Do not dismantle the lambda probe.
Fig. 2-26: Head of the lambda probe
Check heat exchanger tubes
Check the heat exchanger tubes and the turbulators
for tar deposits.
Fig. 2-27: Heat exchanger tubes
Summary of Contents for HACK 20 kW
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