Grundfos SE - Page 92

6. Tighten the fastening screws, required torque is 50 ± 5 Nm. Impeller clearance (1) is set. Check clearance size with the gap gauge again,
to ensure the setting did not alter during the tightening of screws.
Pos. Description
1
2
TM1040239
Clearance gaps
1
Tip gap between
impeller and suction
cover, must be 0.5 ±
0.1 mm.
2
Indirect gap for control
measurement
92
English (GB)