Grundfos Pump 230S250-8

Ensure the pump is connected to protective earth

Switch off the power supply before starting any work on the product

Ensure the power supply cannot be accidentally switched on

Start the pump with the outlet valve closed off to approximately 1/3 of its maximum volume of water

Check the direction of rotation as described in the section on Connection of three-phase motors

Are there impurities in the water?

Open the valve gradually as the water becomes clearer

Do not stop the pump until the water is completely clear

DANGER — Electric shock. Death or serious personal injury.

Switch off the power supply before starting any work on the product.

Ensure the power supply cannot be accidentally switched on.

Measure the voltage between the phases using a voltmeter.

For single-phase motors, measure between phase and neutral or between two phases, depending on the type of supply.

Connect the voltmeter to the terminals in the motor-protective circuit breaker.

Is the voltage within the specified range when the motor is loaded?

Verify the motor liquid level and refill if necessary

Is the motor delivered from stock?

Position the submersible motor with the filling screw at the highest point

Remove the screw from the filling hole

Inject liquid into the motor until it overflows

Replace and tighten the screw in the filling hole

Verify minimum number of starts for MS and MMS motors

Run the pump to prevent issues from prolonged inactivity

Check maximum number of starts for MS402

Check maximum number of starts for MS4000

Check maximum number of starts for MS6000

Check maximum number of starts for MS6000P

Check maximum number of starts for MMS6

Check maximum number of starts for MMS8000

Check storage temperature limits

Ensure motors are stored in a closed, dry, and well-ventilated room

Turn the shaft of MMS motors by hand at least once

Is the pump protected from direct sunlight?

Is the pump secured to prevent rolling or falling over?