4. Remove the suction cover.
If necessary, then pry off the suction cover.
5. Remove the impeller, the adjustment screw, and the conical sleeve.
6.9.2 Install the N-impeller
1. Before installation of the impeller, push the sleeve to check that it moves freely up and
down.
When the sleeve is released, it must be fully pushed out again. If the sleeve does not
move freely, or does not come fully out, then replace the impeller unit.
2. Adjust the adjustment screw in the new impeller.
The correct position is at the bottom without any tightening.
6 Maintenance
Flygt 3069 Installation, Operation, and Maintenance Manual 53
EN
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