Before performing any cleaning and/or maintenance operations the unit must be disconnected from the power supply and the water inlet tap must be turned off. The front panel of the generator is made of glass and therefore during cleaning all the precautions necessary for glass must be taken. Clean the column with a soft cloth, using water and possibly a neutral detergent, particularly on the varnished border to the side. Do not use sharp or abrasive tools that may cut or scratch the seals and the varnished surfaces. Please refer to the user manual for further information.