KSB SE & Co. KGaA Standardised Water Pump ETN 150-125-400

Check correct seating of axial seal rings mounted on the shaft

Is there only gentle contact of the sealing lip?

Ensure no excessive temperatures caused by mechanical contact

Record the differential pressure across the filter

Is the differential pressure within acceptable limits?

Inspect the filter for any damage post-cleaning

Ensure inlet pressure is sufficient post-cleaning

Undo nuts 920.02 at the gland follower and loosen gland follower 452

Undo nuts 920.15 (if any) at casing cover 161

Remove casing cover 161 from bearing bracket 330

For variants with a clamped casing cover: Undo transport locks 901.98 and remove cover plates 81-92.01 and 81-92.02 with transport locks 901.98 and lock washers 554.98

For variants with a bolted casing cover: Use forcing screws 901.31 to remove casing cover 161 from bearing bracket 330

Remove gland follower 452 from casing cover 161 and remove the packing

Remove packing rings 461 and lantern ring 458, if any

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.

Select casing cover variant and perform the corresponding action.

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

Pull shaft sleeve 523 off shaft 210.

Use suitable transport devices, lifting equipment and lifting tackle to move heavy assemblies or components.

Reassemble the pump in accordance with the general rules of sound engineering practice.

Reassemble the pump according to the general assembly drawing or exploded view.

Check O-rings for any damage and replace if required.

Use new gaskets with the same thickness as the old ones.