Grunbeck pureliQ:R, Руководство по эксплуатации

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Cleaning, inspection, maintenance
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6.4 Maintenance
6.4.1 Backwashing filter
If you do not have a drain connection or hose connection
installed, have a 10 litre bucket ready.
1. Place the bucket under the filter (only for installations
without drain connection or hose connection).
2. Turn the backwash handwheel to the left.
3. Hold the backwash handwheel in this position for 5
– 10
seconds.
4. Turn the backwash handwheel back to its initial position
with spring force.
We recommend repeating this procedure 3 times.