Setup and connection
5.9 Aligning the motor
Alignment options:
– With sets of shims
– With adjusting screws
5.9.1 Aligning the motor with sets of shims
1. Align the motor so that the coupling halves are exactly in
line and fit shims if necessary.
2. Check the alignment.
3. Repeat the alignment procedure if there is still any vertical
misalignment.
4. Then tighten the motor fixing screws.
5.9.2 Aligning the motor with adjusting screws
1
4
3
2
Fig. 17 Aligning the motor with adjusting screws
Observe the angle of rotation of the spindle when adjust-
ing the adjusting screws (→ 9.2.8 Height offset for motor
alignment with adjusting screw, Page 45).
1. Determine the necessary angle of rotation of the wrench
for the height offset measured (→ 9.2.8 Height offset for
motor alignment with adjusting screw, Page 45).
2. Loosen the hexagon head bolts (1).
3. Carry out the following steps on all adjusting screws (3):
– Hold the adjusting screw (3) firmly on the hexagon
head (2) and loosen the lock nut (4).
– Turn the adjusting screw (3) to the selected angle.
– Hold the adjusting screw (3) firmly on the hexagon
head (2) and tighten the lock nut (4).
4. Tighten the hexagon head bolts (1).
5. Check the alignment.
6. Repeat the alignment procedure if there is still any vertical
misalignment.
7. Then tighten the motor fixing screws.
5.10 Installing the coupling guard
Do not unscrew the non-loseable nuts (902.101) from the
threaded rod.
Base plate version
1. Installing the coupling guard (→ Fig. 29 Coupling guard on
base plate versions, Page 41).
– Gap between coupling guard and pump < 8 mm
– Gap between coupling guard and motor < 8 mm (set
the equalizing pipe (681.102) accordingly)
22 NT series BA-2021.04 en-US 161-295/E
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