Endress+Hauser Turbimax CUE21, Руководство по эксплуатации

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Turbimax CUE21 / CUE22 Diagnostics and troubleshooting
Hauser 27
9 Diagnostics and troubleshooting
9.1 General troubleshooting
9.1.1 Troubleshooting instructions
The device performs continuous diagnostic monitoring. Any errors are displayed in a
queue in the bottom line of the display.
The Turbimax provides three levels of fault detection:
• Warning
A warning is simply a message on the display indicating that a problem exists. No alarms
are activated. If, for example, the desiccant alarm function is disabled and the desiccant
becomes saturated, the warning DESC will appear on the display.
• Error
An error indicates a fault or a problem that can usually be corrected by the operator. This
includes, for example, a lamp outage (LAMP) or an incorrect calibration (CAL). If an
error occurs, both alarm relays are activated and the current output is maintained at 2
mA. While the device continues to display values, you should not rely on these values as
their accuracy is not known.
• Failure
A failure is a system fault. This is a problem that cannot be corrected by the operator.
The unit must be returned to the factory for service. These failures consist of failures in
the CPU, A/D, EEPROM or other devices internal to the instrument. If a failure occurs,
the device will not function properly and will display the message FAIL in the bottom
line of the display. Both alarm relays are activated and the current output is maintained
at 2 mA.
9.1.2 Process-related errors
Error Possible cause Tests or remedial action
Display values are higher than
expected Bubbles in solution Ensure that vent in drain tube is open and
not obstructed (→  10)
Condensate or leaky cuvette Check flow-through cuvette for
condensate or leaks
Flow-through cuvette dirty Clean cuvette (→  29).
Device is no longer correctly
calibrated Recalibrate device (→  23)
Display values are incorrect Bubbles in solution see above
Debris in flow-through cuvette Remove debris from cuvette
Display values are lower than
expected Device is no longer correctly
calibrated Recalibrate device (→  23)
Upper part of display flashing Sample has exceeded permitted
range Check sample. Turbidity of sample may be
too high to be read by the device.
9.2 Diagnostic information on local display
Diagnostic
message Possible cause Tests or remedial action
MA 4 to 20 mA loop is open Check wiring (→  13, →  19).
DESC Desiccant pouch saturated Replace desiccant pouch (→  30).
LAMP Lamp failed Have lamp replaced. Contact sales office.
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