Smeg ADP8252 - Manual (Page 15)

How to Deal with Small Problems 13
If the dishwasher is to be out of use for a long period
The following precautions must be taken:
- perform two consecutive pre-rinses;
- disconnect the plug from the mains;
- leave the door slightly open so that no unpleasant smells can form;
- turn off the water tap.
Before re-using the dishwasher after a lay-off
- Re-connect the plug to the power socket;
- check that no sludge or rust has been deposited in the water supply pipeline;
- allows water to flow freely from the supply tap for a few minutes;
- re-connect the filter hose and turn the water tap back on.