Causes: 1. It may be that there is insufficient cleaning fluid in the floor washing machine. Cleaning fluid can decompose stains, and the lack of it will make the stains difficult to remove. 2. The roller brush is seriously dirty. During the operation of the floor washing machine, the roller brush will absorb a large amount of dirt. If it is not cleaned for a long time, its cleaning ability will decline. 3. The suction of the machine is insufficient. The suction of the floor washing machine can suck the sewage and dirt into the sewage tank. If the suction is insufficient, the stains will remain on the ground.
Solutions: 1. Check the cleaning fluid storage tank and add an appropriate amount of cleaning fluid according to the requirements of the instruction manual. Generally speaking, different floor washing machines have different requirements for the amount and proportion of cleaning fluid. For example, some floor washing machines require that the cleaning fluid and water be mixed at a ratio of 1:10. 2. Clean the roller brush. Remove the roller brush and rinse it with clean water. For stubborn stains, you can use a brush to gently scrub them, and then dry the roller brush and reinstall it. Some high-quality floor washing machines have a self-cleaning function, which can be used to clean the roller brush. 3. Check the suction system. Check whether the suction port is blocked and clean the hair, fibers and other debris at the suction port. If the suction is insufficient due to a motor failure, contact the after-sales service personnel for repair.
