Xylem Flygt 2860.180, Installation, Operation And Maintenance Manual

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WS001352A
15. 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: 44 Nm (32.5 ft-lbs)
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 both the upper and lower impeller can rotate easily.
WS001339A
16. Check that the impeller can rotate easily.
If not, the adjustment screw and the conical sleeve have not been aligned, and the
shaft may have been displaced relative to the main bearing.
17. Mount the strainer and the nuts.
Tightening torque: 44 Nm (32.5 ft-lbs)
Maintenance
38 Flygt 2860.180 Installation, Operation, and Maintenance Manual