9.5 Checking direction of rotation
The direction of rotation and the flow direction are indicated by arrows on the pump. The direction of
rotation of the motor gives the direction of rotation of the pump. That is to say, the fan impeller of the
motor must rotate in the direction in which the arrow on the pump is pointing to indicate direction of
rotation.
Standard direction of rotation: clockwise (as seen from the drive)
Figure 11: Identifying direction of rotation and flow direction
CAUTION
Dry running can damage pump equipment.
• Ensure that the pump is filled properly.
• Switch the pump on for a maximum of 1 second and then off again immediately.
1
Switch on the power supply and then turn it
off again immediately.
2
Compare the direction of rotation of the fan
impeller with the arrow indicating direction of
rotation on the pump flange.
3
If the directions do not match, swap over two
electrical connection phases. Repeat Steps 1
and 2.
200007721-1-EN-GB 43
Operation 9 EN