No power is reaching the motor — supply, lead, transformer or the on/off switch.

1. Confirm the socket is live and the lead and plug are undamaged.
2. On 110V, check the site transformer and its fuse.
3. Check the on/off switch operates with a definite click.
4. Inspect the 10m cable along its length for cuts or crushing.

Airflow is restricted between the nozzle and the motor.

1. Empty the tank — suction drops sharply as the 65L tank fills.
2. Clean or replace the filter (coned basket, sponge or cartridge).
3. Detach the hose and steel tubes and clear any blockage.
4. Check the hose and tubes seat firmly on the Ø40mm inlet.

The float shut-off has triggered, or a dry-only filter/bag is fitted.

1. Empty the tank — the float cuts suction when it is full of liquid.
2. Check the float/ball valve moves freely and isn't stuck up.
3. Remove any paper or microfibre bag before wet pick-up.
4. Fit a wet-suitable filter (sponge or coned basket).

Fine dust is passing the filter.

1. Check a filter is actually fitted.
2. Inspect the filter for holes, splits or a poor seal.
3. Wash or replace the cartridge or sponge filter.
4. For finer dust, fit a cartridge or HEPA cartridge filter.

The motor is thermal-protecting, usually from restricted airflow or overload.

1. Switch off and let the motor cool for 20–30 minutes.
2. Clear any blockage in the hose, tubes and inlet.
3. Clean or replace a clogged filter.
4. If it keeps cutting out, stop and contact service.

Liquid is escaping from the tank or lid area.

1. Don't overfill — empty before the 65L tank is full.
2. Check the lid latches down evenly and the seal is clean.
3. Check the tank drain (where fitted) is fully closed.
4. Make sure the float chamber isn't held open by debris.

The bag or filter is blinding quickly.

1. Empty or replace the 25L collection bag.
2. Tap out or wash the filter.
3. Use the correct bag and filter for the material.
4. Expect more frequent filter cleaning with very fine material.