Why does the motor of the OASE Pondovac Classic vacuum stop after only one second of operation?

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The Pondovac Classic has an automatic safety system that interrupts the motor after a few seconds of operation when the collection container is full. This behavior is normal and is part of the intended operation of the device.

Normal operation: As soon as the container reaches its maximum liquid level, an automatic float stops the suction. After 25 seconds of pause, the suction automatically restarts once the non-return valve allows water to flow out of the container. If you observe an immediate stop of the motor after only 1-2 seconds without normal operation, this indicates a problem.

Most likely cause: The collection container is not emptying properly. This situation causes the immediate stop of the motor following the attempt to drain. Possible causes may include:

Improperly positioned drainage hose: Check that the drainage hose does not have bends or loops that would prevent water from flowing. Ideally, lay the hose with a slight downward slope.
Stagnant water in the container: After draining, ensure that no trace of water remains in the collection container. If water remains, the system will not operate correctly.
System clogging: The collection container and drainage hose may be clogged with debris or sediments. Completely empty the container and clean it with clear water until all dirt is removed.

Additional checks: Ensure that the non-return valve on the drainage opening (at the bottom of the hose) can open freely. Also, clean the filter foam if it is clogged, as this can cause an overload of the system.

If after these checks the motor continues to stop immediately, contact OASE customer service to diagnose a possible defect in the float system or the non-return valve.

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