KSB SE & Co. KGaA Standardised Water Pump ETN 125-100-250

WARNING — Back Pull-Out Unit Tipping Over. Risk of crushing hands and feet!

Suspend or support the bearing bracket at the pump end

Suspend or support bearing bracket 330 to prevent it from tipping over, if required

Unbolt support foot 183 from the baseplate

Undo hexagon nut 920.01 at the volute casing

Remove the back pull-out unit using forcing screws

Pull the back pull-out unit completely out of the volute casing

Remove and dispose of joint ring 400.10

Place the back pull-out unit on a clean and level surface

Record the differential pressure gauge reading

Is the differential pressure within the acceptable range?

Inspect the filter for any damage post-cleaning

Ensure inlet pressure is sufficient

Ensure a suitable container for the used oil is on hand

Place the container underneath the screw plug

Undo the screw plug (2) at the bearing bracket (3) and drain the oil

Re-insert and re-tighten the screw plug (2) after draining

Select the shaft unit and note the oil quantity per bearing bracket

Read the note about spacer-type couplings

Suspend or support the motor to prevent it from tipping over

Disconnect the motor from the power supply

Unbolt the motor from the baseplate

Shift the motor to separate it from the pump

Verify that the notes and steps from Section 7.4.1 to Section 7.4.4 have been observed/carried out

Ensure the back pull-out unit is placed in a clean and level assembly area

Undo hexagon nut 920.95 (right-hand thread)

Remove impeller 230 using an impeller removal tool

Place impeller 230 on a clean and level surface

Remove keys 940.01 and 940.09 from shaft 210, if applicable