See link for operation: https://youtu.be/J7FY8IGP1lk
Note: The video only shows the troubleshooting steps, process, and methods, and the specific details are subject to the actual product.
do all of the models (3400, 3600, 4400) suck the water in so can it for example suck the water from a water tank or does there have to be pressure on the intake hose?