How do I protect my dishwasher from freezing during winter?

If the dishwasher will be left in an unheated place during winter, a service technician should cut off electrical power, remove fuses or trip the circuit breaker, turn off the water supply and disconnect the water inlet line, and drain water from the inlet line and water valve. Additionally, the plastic sump cover in the tub bottom should be removed and any water in the rubber boot soaked up with a sponge. It is recommended to have a qualified service technician perform these steps. (Page 16)