The pump may be started for a very short period without being submerged to check the direction of rotation.
Check the direction of rotation before starting up the pump. An arrow on the motor housing indicates the correct direction of rotation.
Correct direction of rotation is clockwise when viewed from above.
Checking the direction of rotation
The direction of rotation should be checked in the following way every time the pump is connected to a new installation.
Procedure
1. Let the pump hang from a lifting device, e.g. the hoist used for lowering the pump into the tank.
2. Start and stop the pump while observing the movement (jerk) of the pump. If connected correctly, the pump will rotate clockwise, i.e. it will jerk counter-clockwise. If the direction of rotation is wrong, interchange any two of the phases in the power supply cable.