Bosch WFC Series Service Information Manual page 18

OPERATION – Sensors (3)
Load and Dynamic Load Sensor
Mechanical Pressure Switch – (All
Models) measures the water level after
the first fill. If the water level is high
(like for smaller loads), the pressure
increases and the pressure switch does
not provide more water.
Analogue Pressure Switch – (WFR to
WFW)
• Precise measuring of actual water
level
• Accurate load detection
• Control of the pump – noise
reduction
• Time reduction – no pumping when
empty
BENEFITS: Continuous adjustment of
wash times. Water and energy
consumed varies according to load size.