water problem on Karcher A2003 vacuum cleaner

[pubmax]

Hello!

I understand that for wet vacuuming on the Karcher A2003 vacuum cleaner, the sponge filter is used. With the filter installed and even with the motor not installed on the collection bucket, immediately after starting, the valve at the suction mouth is raised, which prevents water from entering the motor, which cuts off the air flow of the vacuum cleaner, therefore the vacuum cleaner cannot be used. I tried without this filter, but water enters the motor.

With the blue bag filter, the air flow is also blocked because it gets wet.

I also tried with the cartridge filter, over which I put the sponge filter, over which I put the blue bag filter. The problem is that the cartridge filter is made of paper.

I am attaching pictures and a video at the following link: https://www.transfernow.net/dl/20250802AfUPAcee/LFa2YBGM

PLEASE help me!

The valves used to be weighted, with a small bag of sand. If your valve should have some weight to it and that weight is missing, then the valve can be easily sucked into the motor.

This said, I have had the exact cleaner you've got, and it was very cheap & not that great. Yours looks (kindly!) like it owes you nothing. Of course, you could always wedge the valve down...I mean, you're not supposed to of course, and water will get sucked into the fans if you overfill the bucket...but it's your call.

Thank you for your response!

Isn't it strange that the valve lifts up when the filter is put on? I can't figure out how is this mechanism designed.

Oh and yeah, it is dirty because of storage, I never used it because of this exact problem.

Isn't it strange that the valve lifts up when the filter is put on?

I totally missed this bit from your OP, sorry. It is not strange, it is almost a dead-cert that the filter is in some way blocked, meaning that airflow is restricted and the cleaner is pulling up the valve as all the suction is contained within.

Thanks to you, I tied the valve with a piece of wire and it worked.