- Factory Quality Testing: A dishwasher manufacturer may perform factory quality testing, which involves checking that the dishwasher is functioning properly before it leaves the production line. During these tests, the dishwasher may be run briefly, which may leave moisture inside the dishwasher. Hence the water in the new dishwasher after unpacking.
- Transport and storage: The dishwasher may be exported to a store or warehouse where temperature and humidity changes may occur. This may cause condensation inside the dishwasher. That's why there's water standing in the new dishwasher when you open the box.
- Water from tests: It happens that the manufacturer adds a small amount of water to the dishwasher during tests. This water may remain inside after testing is completed. The dishwasher has water inside after opening the package and has not been used.
- Motion during transportation: Vibrations and shocks may occur while the dishwasher is being transported, which may cause water from the side channels to flow to the bottom of the dishwasher, leaving moisture inside. Therefore, you may have condensation and a wet dishwasher inside.
As you can see, in most cases, moisture in the dishwasher after purchase is not disturbing and does not negatively affect its operation. However, before using a new dishwasher for the first time, it is worth consulting the manufacturer's user manual to find out whether there are any special recommendations for the first use from the manufacturer where you buy the new dishwasher.