Pump prefilter lid nut Blue Power – 260, 370, 550, 750

Dimensions and technical details

Pump prefilter lid nut Blue Power – 260, 370, 550, 750

The retaining nut holds the corresponding pre-filter lid closed. It is not the transparent lid itself.

What to check before ordering

The retaining nut holds the pre-filter lid closed. A missing nut or damaged thread prevents the lid from being secured correctly. Inspect the lid, its seal and the seating faces as well.

Compatibility and part identification

How to choose the correct version

Compare the thread, lid opening, height and shape of the original nut. The nut must match both the lid and the pre-filter body; a similar external size alone is not sufficient.

When to replace the part

Replace a missing or cracked nut, or one with a damaged thread. Do not overtighten it to compensate for a worn seal.

Important points when replacing the part

Check that the thread engages smoothly and the nut is correctly seated. If the lid leaks, inspect its gasket too. Overtightening can damage the lid or fastening.

Version details

Disconnect the pump from the power supply and drain the water before disassembly. Motor repairs, capacitor replacement and mechanical seal installation should be carried out by a qualified technician.

Using the exploded diagram

The listed position refers to the corresponding assembly diagram. The arrow helps locate the part; for some small components it marks only the fitting area. Compare the original part, its code and the specific pump version before ordering. You are ordering the item named in this listing, not the complete assembly in the diagram.

Related spare parts guides

• Blue Power spare parts and exploded diagram →

Need help identifying the part

Email info@chemie-bazen.cz with photographs of the original part and the pump rating plate. Include measured dimensions and the fitting location to help identify the correct version.