Nilfisk Motor or Fan Noise / Mechanical Wear

Vacuum is excessively loud compared to normal operation

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Worn motor bearings, Damaged motor fan, Loose internal screws or panels, Cracked cyclone or housing amplifying noise

Safety: Remove the battery before any disassembly.

Rule out attachments: Run the vacuum in handheld mode without wand or nozzle. If noise decreases, the issue is in the attachments.
Check for foreign objects: Inspect the nozzle and wand for small objects rattling inside.
If noise is from motor area: Persistent grinding or roaring indicates bearing wear or fan damage.
Avoid prolonged use: Continued operation can lead to motor failure. Arrange for motor assembly replacement.

Hard 4/5

Main Brushless Motor Assembly

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