Optical Low Rinse-Aid Sensor (Optional) - Siemens SE25M575GB series Repair Instructions

4.9

Optical low rinse-aid sensor (optional)

The optical low rinse-aid sensor consists of a transmitter diode and
a receiver diode.
A light beam is transmitted from the transmitter diode (A) to the
receiver diode (B) via a prism (C). If the dispenser is full, the light
beam in the prism is scattered. The received signal is weaker than
the transmitted one.
Transmitter diode
A
B Receiver diode
C Prism
815_58300000003806_ara_en_e.doc – 30.01.12
A Transmitter diode
B Receiver diode
C Prism
If the dispenser is empty, the light beam in the prism is reflected.
The received signal is the same as the transmitted signal.
The module evaluates the received signal and the refill indicator LED
is actuated.
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