Arrived at location on 6/3/22 - Customer was having to issue with coffee brewer tripping gfi outlet. Had customer brew pot of coffee no issues. I asked if it gets moisture back where unit sits and manager said it does. Removed bottom pot warmer and found wires to element showed that they were wet at one time. Customer gave me a sheet tray and I placed coffee brewer and grinder on top of it to help keep moisture away from warmer. All ok.