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10
Troubleshooting
User qualification: trained user
n
Please contact Service if the external sensors are faulty.
Damage
The displays do not light up
once the unit has been
switched on. No lights are on.
The sensors do not measure,
or the displayed values are
incorrect when the unit is
switched on.
The sensor displays a max‐
imum value at all times.
Continuing instability of the
sensor.
The sensor cannot be cali‐
brated.
Problematic and unstable con‐
trol.
10.1
Troubleshooting
Fault
The peristaltic pump no
longer reaches full pump
capacity
In all other cases, notify your service technician or your ProMinent branch.
Ä Chapter 2.4 'User qualification' on page 15
Cause
Primary power unit faulty
Sensor cable faulty. Faulty
sensor
Sensor cable faulty. Faulty
sensor
Worn or faulty sensor.
There is air in the filtration unit.
External faults
Worn or faulty sensor or
unstable measurement
Incorrect parameter setting
Cause
The pump hose has lost its
elasticity
Troubleshooting
Troubleshooting
Check the fuse in the primary
power supply.
Check the mains cable.
Check the sensor cable.
Check the sensor connector.
Replace the sensor.
Check your connections or
replace the faulty sensor.
Replace the sensor. Check fil‐
tration.
Change the sensor and check
the basic filtration functions.
Check the program settings.
Check the behaviour of the
system and adjust the control
parameters.
Remedy
Replace the pump hose, see
Ä Chapter 11.6 'Repair'
on page 68
63
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