Lake Country System 4000 Pad Washer [90-4000]System 4000 Pad Washer The System 4000 with Pure Flo Technology is a self contained cleaning system featuring a user controlled pump and a removable catch basin. The first cleaning system that pumps fresh cleaning solution into the pad every time while containing the contaminated water separately. Easy and effective to use for most types of pads and polishers with easy access to clean pads on the go. Features: Safe & Effective Pad Cleaning Eco