KSB SE & Co. KGaA Standardised Water Pump ETN 125-100-315

Ensure notes and steps from Section 7.4.1 to Section 7.4.5 have been observed/carried out.

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

Remove the rotating assembly of the mechanical seal (primary ring) from shaft sleeve 523.

Undo nuts 920.15 at casing cover 161, if present.

Remove the stationary assembly of the mechanical seal (mating ring) from casing cover 161.

Pull shaft sleeve 523 off shaft 210.

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 confirm oil quantity per bearing bracket

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 from its seat in the volute casing 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

Observe and carry out notes and steps from Section 7.4.1 Page 49 to Section 7.4.6 Page 51

Place the bearing bracket in a clean and level assembly area

Undo the grub screw in the coupling hub

Pull the coupling hub off shaft 210 with a special puller

Remove pump-end bearing cover 360.01 and drive-end bearing cover 360.02

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.