Grundfos SE1 50 Notice D'installation Et De Fonctionnement page 32

Start and stop levels
Pos. Description
1 Max.
2 Min.
Make sure that the effective volume of the tank
does not become so low that the number of starts
per hour exceeds the maximum permissible
number.
7.4 Direction of rotation
Start and let the pump run for a few
seconds to check the direction of
rotation.
An arrow on the top cover indicates the correct
direction of rotation. The correct direction of
rotation is clockwise.
When started, the pump jerks counterclockwise.
Procedure
The direction of rotation must be checked every
time the pump is connected to a new installation.
Proceed as follows:
1. Let the pump hang from a lifting device, for
example the hoist used for lowering the pump
into the tank.
2. Start and stop the pump while observing the
movement or jerk of the pump. If connected
correctly, the pump rotates clockwise and it
jerks counterclockwise.
3. If the direction of rotation is wrong,
interchange any two of the phases in the
power cable.
32
1
2
Jerk direction
Related information
6.8 Wiring diagrams
10. Fault finding