Endress+Hauser Turbimax CUS71D, Руководство по эксплуатации

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Turbimax CUS71D Diagnostics and troubleshooting
Hauser 21
8.2 Cyclic cleaning
Cyclic cleaning is available for ultrasonic sensors with an integrated wiper. The wiper interval
is set to 240 minutes at the factory.
8.3 Automatic wiper function
Sensor versions with a wiper have an integrated automatic wiper function. The wiper starts as
soon as the sensor stops receiving a signal. This happens when the sensor membrane is
fouled, for example.
• The wiper wipes twice every 5 minutes for a maximum of 3 runs.
• If the sensor does not receive a signal after 30 minutes, the sensor triggers the diagnostic
message 172 Echo loss at the transmitter.
9 Diagnostics and troubleshooting
9.1 General troubleshooting
When troubleshooting, the entire measuring point must be taken into account:
• Transmitter
• Electrical connections and cables
• Assembly
• Sensor
The possible causes of error in the following table refer primarily to the sensor.
Display Check Solution
No display, no sensor
reaction
• Mains voltage connected to the
transmitter
• Sensor connected correctly
• Deposit buildup on sensor
membrane
• Check sensor/channel configuration
• Apply line voltage
• Make the right
connection
• Clean sensor
• Assign sensor
Display value too high
or too low
• Basin configuration
• Check sensor installation
Configure sensor
Display value
fluctuating greatly
• Check mounting location
• Deposit buildup on sensor
membrane
• Basin configuration
• Select a different
mounting location
• Clean sensor
• Configure sensor
Pay attention to the troubleshooting information in the Operating Instructions for the
transmitter. Check the transmitter if necessary.