9. Fasten the impeller:
a) Place the washer on the impeller screw.
b) Lock the impeller to prevent rotation.
Use pliers, a screwdriver, or similar.
c) Tighten the impeller screw.
Tightening torque: 76 Nm (57 ft-lb)
d) Tighten a further 1/8 turn, 45°.
The screw will be loaded to its yield point and the load capacity of the joint will be
higher.
e) Check that the impeller can rotate freely.
10. Mount the strainer and the nuts.
Tightening torque: 76 Nm (57 ft-lb)
6 Maintenance
44 Flygt 2190, 2201 Installation, Operation, and Maintenance Manual
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