38
Maintenance
EN
4. Insert the filters and filter compartment cover in re-
verse order.
5. To cancel the filter change indicator hold down
until the indicator is extinguished.
If the fine filter is changed before the 250 operating
hours have elapsed due to soiling, the hours meter has
to be set to zero:
6. To do so hold down the on / off switch
switching on the unit. The filter change indicator
lights up after 3 approx. seconds and is extin-
guished after another 3 seconds. Only then re-
lease the switch.
Bacteria filter
When changing the bacteria filter, please observe the
relevant operating instructions.
8.3 Change pressure measurement tube
1. Detach the sleeve on the creased hose from the
adapter
2. Remove the pressure measurement tube
the creased hose.
3. Remove the pressure measurement tube from the
adapter
