Error Messages and Troubleshooting
Error message
Cause(n)
Remedy
Use power supply
The rechargeable
batteries are dead.
The batteries require a
charging time of ≈
11 hours.
You can operate the
FCU using a connected
power supply.
Flow rate error!
Correct: 0 ml
There is no oil flowing
through the particle
sensor
(possibly only air).
The flow rate sensor is
faulty.
Measurement volumes
are set to 0 in the
PowerUp menu.
(Starting with Firmware
Version 3.20, the
minimum measurement
volume is 10 ml)
Turn the flow control
valve control knob
clockwise.
Check the change-over
valve setting.
Check the hydraulic
connections.
Check the pressure.
Fluid must flow through
the return hose on the
OUTLET from a
pressure of
>30bar/420psi. The
pressure relief valve
must open (see circuit
diagram).
Change the measured
volume to between 10 -
100 ml.
Send the FCU to
HYDAC for repair.
The batteries are
exhausted as a result of
measurements being
carried out via the
integrated pump without
additional power supply
unit.
Connect both power
adapters (see page 29).
Flow rate error!
Correct: 15 ml
The flow through the
particle sensor is lower
than the minimum value of
50 ml/min required to take
measurements.
Turn the flow control
valve clockwise until
measurement operation
starts.
FCU 2000-4 series
en(us)
86 / 120
BEWA FCU2000-4 3109987h en-us 2017-01-24.docx
2017-01-24
