What should I do before using the dishwasher for the very first time?

Before first use, check and adjust the water softener level to match your local water hardness, fill the salt container, and fill the rinse aid dispenser. Then open the water tap and run a programme without detergent and without loading the baskets to remove any processing residuals. Note that after starting a programme it may take up to 5 minutes for the appliance to recharge the resin in the water softener before the washing phase begins. (Page 13)