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39
Maintenance
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3. 2. Changing intervals of the filter elements
After a certain amount of operating hours, the filter elements must be replaced. This depends on the
produced amount of dust or gas. Nevertheless, the filters must be replaced at the latest if the signal horn
(pos. 3) is triggered off.
Depending on the application, it can be required to replace the filters even earlier.
We recommend the following changing intervals:
Filter element
Recommended operating period
Gross filter
50 operating hours
Prefilter
100 operating hours
Activated carbon filter
100 operating hours
Main filter
200 operating hours