Unscrew the button or screw that holds the deal with in position, eliminate the manage, then unscrew or remove protect plate. This exposes the human body and spindle. If there is water in the top of spindle and also the outer body is soaked, it’s a sign the O-ring is leaking.  https://gregoryqlmms.iyublog.com/33885414/rumored-buzz-on-commercial-plumbing