Water distillers are subject to daily maintenance and periodic maintenance. Daily maintenance shall include removal of dust, impurities from the surface of assembly units and parts and checking the water distiller’s grounding by means of external inspection. Periodic maintenance includes cleaning of the water distiller parts from pollutions mechanically or otherwise without destroying their surface, and checking for grounding. It is necessary to monitor the state of the level sensor rod, condenser, connecting tubes and fittings of the distiller, carry out their cleaning or replacement, avoiding reduction of their inner diameter. Frequency of periodic maintenance is set by the user depending on the water distiller intensity of use and quality of incoming water, but not less than every 160 hours of the water distiller operation.