"Ensure power is not connected to the coffee machine. if you are (not?) competent with working with 240 volt appliances do not attempt this repair. remove rear panel, remove left hand front panel and remove left hand side panel. disconnect power leads from vaporizer. undo and remove water inlet and outlet to vaporizer. remove screws of the vaporizer bracket. undo earth connection on vaporizer bracket. undo screw of cable organizer. remove water tubes at rear of vaporizer bracket. swing vaporizer bracket out of machine to undo the electrical connectors that hold the vaporizer onto the vaporizer bracket. one of these also releases the thermostat sensor. remove the vaporizer and replace the old with the new. test the heater element with a multimeter. should read short circuit not open circuit. installation is the reverse process of this."