Electrolux 5000 Series - Dishwasher Systems and Components; Dishwasher Control Unit and Cycles

9
CYCLE, SYSTEMS & COMPONENTS
Knowledge of the dishwasher’s cycles and systems is necessary in diagnosing
any potential operational problems. Methods for diagnosing these problems, such
as taking resistance readings and testing for closed circuits are outlined in the
following section as well.
DISHWASHER CONTROL
All of the functions and operations of this dishwasher are dictated and monitored by
the electronic control. The control maintains the proper water temperature in the
wash and rinse cycles to ensure proper cleaning for the wash cycle selected. (This
temperature may not be the same for all cycles.) The control also monitors the soil
concentration in the water with the use of a turbidity sensor mounted in the sump.
Auto Wash
This cycle factors in the size of the load, the amount of soil on the dishes, and the
temperature of the water to create an appropriate cycle for each load. Auto wash
uses water temperature to determine the length of the wash cycle. Water
temperature is monitored to assess the rate at which the water temperature
decreases. A rapid decrease in temperature alerts the control to extend the wash
time. (Larger loads have higher rates of temperature decrease, therefore longer
wash cycles.)
As the water is assessed for temperature changes, it is also adjusted to maintain
proper temperature throughout the cycle. The control also checks the soil
concentration in the water to determine the number of rinses needed for cleaning.
Heavy Wash
This cycle is intended for heavy soil levels. The water temperatures for both wash
and rinse cycles are automatically selected. It includes a high temperature wash
and sanitize rinse. Soil sensing is used in this cycle.
Normal Wash
This cycle is intended for normal soil level. All options (high temperature wash,
sanitize rinse, and delay start) are available at the user’s discretion. Soil sensing is
used in this cycle.
Short Wash
This cycle is intended for light soil levels. All options (high temperature wash,
sanitize rinse, and delay start) are available at the user’s discretion. Soil sensing is
used in this cycle.