Flowserve LRR1-40 TDS Control Unit - Manual (Page 32)

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Malfunctions
Fault finding list for troubleshooting
Equipment does not work - no function
Fault: LED "Power" is not illuminated.
Remedy: Switch on power supply and wire equipment in accordance with the wiring
diagram.
Equipment does not work correctly
Fault: The connected actual value indicator shows incorrect values.
Remedy: Dirt deposits on the conductivity electrode. Remove the equipment and
clean the measuring surface.
Fault: A MIN or MAX limit alarm is given although the actual value (reference
measurement) lies within these limits.
Remedy: Dirt deposits on the conductivity electrode. Remove the equipment and
clean the measuring surface.
If configured as proportional controller: The equipment works as two-position
(on - off) controller
Fault: The feedback potentiometer in the continuous blowdown valve is either
defective or not connected.
Remedy: Wire the equipment in accordance with the wiring diagram and check the
potentiometer.
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