When using this vacuum cleaner, if you are vacuuming a large amount of pure water, you need to remove the dust filter and filter; if you are vacuuming a small amount of wet and dry mixture, you do not need to remove them. For wet vacuuming, first insert the hose into the water inlet of the machine body, then install the hose, squeegee, filter bag, and protective ball. Use the squeegee for floor vacuuming and the carpet squeegee for carpet vacuuming. When vacuuming, hold the squeegee handle and push it back and forth on the floor. When vacuuming carpets, apply slightly more pressure and overlap the squeegee marks to prevent missed areas. Once the water tank is full, turn off the power, lower the drain hose, and open the piston to drain the water. After use, unplug the power cord and the water inlet hose. Pay attention to the water level in the tank during operation. Empty the tank promptly when full to prevent motor burnout. Do not vacuum large, hard objects. If vacuuming foaming cleaning agents, add a defoamer. Avoid colliding the squeegee with furniture. After use, promptly dispose of wastewater and clean the water tank, filter, and machine body. If vacuuming acidic cleaning agents, thoroughly clean the machine to prevent rust.