ACS 553, ACS 563 Service Manual
1 689 975 295 2021-04-13 Robert Bosch GmbH
Electrical
The sensors and transducers provide the
input and feedback data needed to control the
operation of unit.
Sensors include:
the sensor is
integrated in the fan (disabled on R134a).
weighs the refrigerant
in the ISV as a baseline for determining
the amount of refrigerant withdrawn from
refrigerant added to the system, and how
much refrigerant is available in the ISV for
use.
supplies the
temperature of the refrigerant stored in
density.
: identifies
R1234yf refrigerant and tests refrigerant
Transducers include:
measures the
system.
measures
the pressure in the oil separator to ensure
proper oil separation from the refrigerant.
The tank pressure is read by low-side
pressure transducer.
To access the operational capability of the
computer (or network), or to update the
software as required occasionally to keep the
unit current. See “Firmware update” in the
Setup Menu section.
Refer to Figure 3-4 (Sheets 1 through 4), for a
graphical representation of the interconnection
of the electrical components.
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