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Maintenance (expert)
Cleaning and maintenance
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an incorrectly calibrated lambda probe
Cleaning the lambda probe
Only vacuum the head of the lambda probe with an ash
vacuum. Do not dismantle the lambda probe.
Fig. 2-40: Head of lambda probe
Checking the seal on heat exchanger cover
Clean the heat exchanger cover. Check if the seal on
the heat exchanger cover is intact and replace if
necessary.
Fig. 2-41: Heat exchanger cover
CAUTION!
Do not operate with damaged seals
Never operate the boiler with damaged seals.
Otherwise, unwanted air is sucked in, disturbing the
combustion process and causing increased wear.
Always replace damaged seals immediately.
Closing the heat exchanger cover
Replace the heat exchanger cover and tighten the
wing nuts alternately and evenly.
Fig. 2-42: Heat exchanger cover
Replace the insulation on the heat exchanger cover.
Fig. 2-43: Insulation
