Grundfos Pump 45S200-43DS

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

Ensure the pump is submerged in the liquid to be pumped

Set the outlet valve 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

Open the valve gradually as the water becomes clearer

Motor Protection — Required Settings of Motor-Protective Circuit Breaker

Ensure the motor-protective circuit breaker is set to the rated maximum current of the motor.

Start the pump and let it run for half an hour at normal performance.

Slowly grade down the scale indicator until the motor trip point is reached.

Is the setting within the permissible range (not exceeding the rated maximum current of the motor)?

For motors wound for star-delta starting, ensure the motor-protective circuit breaker is set to rated maximum current × 0.58.

Is the startup time for star-delta or autotransformer starting within 2 seconds?

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?

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

Verify the motor liquid level and refill if necessary

Is the motor delivered from stock?

Is the liquid level checked during service?

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