14 Troubleshooting
14.2 Troubleshooting
Fault identifica-
tion
Cause Remedy
– – – – 5 Outgassing
Increase the system pressure.
Reduce the temperature.
– – – – 5 Pulsations too high
Use another feed pump.
Carry out changes to the system.
– – – – 5 Back pressure too low
Increase the back pressure.
– – – – 5 Flow rate fluctuations too high
Ensure a continuous flow rate by taking suitable measures (use of a different pump,
valve, damper, etc.).
-or-
Smoothen the indication. In the process observe the operating instructions of the elec-
tronic equipment.
– – 3 – 5 Filling amount too low
Use a flowmeter with a suitable size.
Use a flowmeter from a suitable series.
– – – – 5 Strongly deviating operating data
Use a flowmeter from a suitable series.
Adapt the operating data to the flowmeter.
– 2 3 4 5 Wear at the measuring unit and bearings
Replace the measuring unit.
Replace the bearings.
Filter out the abrasive materials.
– – – 4 5 Sluggishness through deposits
Disassemble the flowmeter and clean it carefully.
– 2 3 – – Flow impaired at the system end
Check whether the fluid flows in the system (pump in operation, slide valve opened,
etc.).
Check whether shut-off devices before and after the flowmeter are opened.
– 2 3 – – Flowmeter switched to bypass
Switch the flowmeter to through-flow.
Tab.11: Fault table
Operating instructions
OIO 14en-GB Edition 2020-01
43
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