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G600 & G800 Electronic Dishwashers
4.24 Turbidity Sensor (ECO Sensor)
Certain model dishwashers are equipped with a Turbidity (ECO)
Sensor. The Sensor is comprised of a Phototransistor that emits a
beam of light through the water path. On the opposite side of the
sensor is a Photoelectric Switch (receiver). The amount of light
capable of passing through the water is based on the turbidity
(transparency) of the water. The amount of light received, effects the
current flow of the sensor, and is used by the Electronic to calculate
the condition of the water.
If clean water is present, the light flow is near 100%. As the water
becomes dirty the amount of light received is reduced.
During certain steps of the program (refer to the model specific Timing
Chart) the Sensor is monitored to determine the condition of the water.
1 5 V
2 Photoelectric Switch Line
3 Phototransistor Line
Example
At the end of the Pre-Wash the water is checked via the Turbidity
Sensor. If the water is clean enough, the program will change by
eliminating the drain at the end of the Pre-Wash and fill at the
beginning of the Main Wash. The same water will continue to be used
to reduce water consumption.
If the Turbidity Sensor and electronic determine the water to be “dirty”.
Then the program will continue with a drain at the end of the Pre-
Wash, and a fill during the Main Wash.
Figure 4-20: Turbidity Sensor (ECO Sensor)
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