Xylem Flygt 3201, Installation Operation & Maintenance, Page: 37 / 48

4. Before assembling the pump housing or diffuser ring with the drive unit end, check the
following:
• Check the O-ring and fit it in place.
• Check the orientation of the pump housing or diffuser ring.
5. Install the drive unit on the pump housing.
Tightening torque, see Torque values (page 32).
Replace the impeller wear ring
Figure 9: The impeller wear ring
1. Lay the drive unit on its side.
2. Knock off the impeller wear ring from the impeller.
If necessary, saw grooves in the wear ring using a hacksaw.
3. Heat the new impeller wear ring and press it onto the impeller.
4. Before assembling the pump housing or diffuser ring with the drive unit end, check the
following:
• Check the O-ring and fit it in place.
• Check the orientation of the pump housing or diffuser ring.
5. Install the drive unit on the pump housing.
Tightening torque, see Torque values (page 32).
Replace the impeller
WARNING:
A worn impeller and/or pump housing can have very sharp edges. Wear protective gloves.
1
2
3
4
1. Wear protection
2. Lock nuts
Maintenance
Flygt 3201 Installation, Operation, and Maintenance Manual 35