Instruction manualWater Management Boiler System C 110 L 110VSeite 117.4 Cleaning waste water pump Remove hosesRemove fastening screw of pressure switch. ATTENTION: Do not alter themiddle adjusting screw! Remove fastening screw of pump head and take off the head Remove Valve plate and clean on front and backHoseHoseFastening screw pressure switchAdjusting screwValve plateFastening screw pump head