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If you are picking up clean water, the pleated paper filter should be removed.
When picking up small amounts of liquid the paper filter may be left in place. Please note that when the filter becomes saturated, misting may occur at the blower port. To further protect the motor of the vac, there is a wet filter (VF7000 part number) available. This filter can only be used for 5 gallon and larger vacs. The VF7000 filter is available at any local Home Depot store or it can be purchase through our Customer Service organization over the phone 1-800-4-RIDGID (1-800-474-3443) or on-line at www.ridgidparts.com.
Additionally, when picking up large volume of liquids, the liquid in the drum may reach a predetermined level and the float mechanism will rise automatically to cut off airflow. This occurs to avoid liquids from entering the power head. When this happens, turn off the vac, unplug the power cord, and empty the drum. For this reason, it is important NOT to leave the vac running unattended during operation.
Before storage, the filter must be dried to avoid possible mildew and damage to the filter. We recommend that you clean or wash the filter then let it air dry overnight. Please check the filter for holes or tears after each cleaning. The filter might need to be replaced if it has any damage.