Grundfos Pump 45S150-37

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

Verify minimum number of starts for MS and MMS motors

Run the pump at least once 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 the level of motor liquid

Is the motor liquid level sufficient?

Refill motor liquid using tap water if necessary

Is the motor delivered from stock?

Is the motor liquid level checked during service?

Position the submersible motor so the filling screw is at the highest point of the motor

Remove the screw from the filling hole

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?

Ensure power supply cannot be accidentally switched on

Measure the voltage between the phases using a voltmeter

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

Stop the pump if there are large variations in voltage

Measure the amps of each phase while the pump is operating