Before using for the first time Rinse aid Adding rinse aid Rinse aid is necessary to ensure water does not cling and leave marks on crockery during the drying phase and helps crockery dry faster after it has been washed. Rinse aid is poured into the storage reservoir and the amount set is dispensed automatically. ,Inadvertently filling the rinse aid reservoir with powder or liquid detergent will always cause serious damage to the reservoir. Alternatively, it is possible to use – Household vinegar with a max. 5% acid content or – Liquid citric acid with up to 10% acid content. The resulting rinsing and drying quality will not, however, be as good as when rinse aid is used. ,Do not use vinegar with a higher acid content (e.g. vinegar essence containing 25% acid). This would damage the dishwasher. If you only ever use combination products containing rinse aid in your dishwasher, you do not need to add rinse aid. 20 ^ Press the button on the lid of the rinse aid reservoir in the direction of the arrow until the flap springs open.