What safety precautions should I take if the dishwasher will be left in an unheated place during winter?

To protect against freezing, have a service technician cut off electrical power, turn off the water supply, disconnect the water inlet line, drain water from the inlet line and water valve, reconnect the inlet line, and use a sponge to soak up remaining water in the rubber boot after removing the plastic sump cover. These steps help prevent damage to the dishwasher from freezing temperatures. (Page 16)