KSB SE & Co. KGaA Submersible Motor Pump KRT K 100-253

NOTE: In demanding conditions, reduce the maintenance interval accordingly. For a consultation or any queries please contact KSB Service.

Ensure the pump set has been lifted out of the pump sump and cleaned (Applies to installation type K only).

Inspect the power cables for visible damage.

Replace any damaged components with original spare parts.

Measure the resistance between the ground conductor and chassis ground.

Is the electrical resistance lower than 1 Ω?

Replace any damaged components with original spare parts.

Wear safety clothing and a protective mask if required

Observe all legal regulations on the disposal of fluids posing a health hazard

Close the shut-off element on the suction side

Switch off the drive and ensure it cannot be re-started unintentionally

Close the shut-off element on the discharge side

Open the drain plug (auxiliary connection 6B)

In demanding conditions (e.g. high mechanical and hydraulic loads) reduce the maintenance interval accordingly. For a consultation or any queries please contact KSB Service.

Ensure the pump set has been disconnected in the control cabinet.

Use an insulation resistance measuring device.

Ensure the maximum measuring voltage is 500 V (maximum permissible voltage 1000 V).

Measure the winding to chassis ground

Connect all winding ends together.

Measure the insulation resistance of the winding to chassis ground.

Check the bail or eyebolt including fasteners for any visible damage

Replace any damaged components with original spare parts

Contact KSB Service for consultation or queries

Place a suitable container under screw plug 903.33

Ensure the pump set is in a horizontal position

Unscrew both screw plugs 903.34/903.35 with joint rings 411.34/411.35 at the coolant filler openings

Undo screw plug 903.33 with joint ring 411.33 and drain off the coolant

Check the appearance of the drained coolant