The dishwasher wash cycle activates after dishes are loaded onto the racks, detergent inserted, and the door latched shut. The control panel displays the cycle time and selected mode. Water enters the tub, the pump turns on with a steady hum, and circulation begins inside the closed unit.

External indicators provide updates: the progress lights shift, remaining time counts down, and sounds of water surging and draining mark phase changes. These signals confirm activity from outside the machine.

Rotation Within the Enclosure

Once the door closes at cycle start, the spray arms—upper and lower—begin rotating. Water pressure from the pump forces jets through nozzles, propelling the arms in continuous circles. This motion distributes water and detergent across the dishes.

The arms complete multiple revolutions per minute throughout the wash and rinse phases. Nozzles direct streams at specific angles, and the arms sweep over every rack level. Door remains sealed, preventing direct sight of these movements.

Persistent Circulation

The pump maintains flow, arms keep turning, and water contacts surfaces repeatedly. Indicators on the panel continue updating, but interior dynamics proceed without visual check. The full rotation sequence operates to completion.

Dishwasher cycles run entirely, spray arms rotating steadily in the unseen interior.