... speed adjustment Automatic Floor Scrubber Dryer1,with CPU control2,suction motor from Ametek3,with forward speed adjustmentFeaturesSide-open recovery ... design in the recovery tank, protects the suction motor betterLow noise level suction motor device, lows the machine operation noiseWith ... the tap water with hose directly Equipped with Ametek suction motor and USA original rubber blade, make sure the ...