wtw Turb 2000 Series, Operating Manual

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Error elimination Turb 2000 Series
36
ba75695e03 10/2013
8.3 Error messages
Symptom Cause Remedy
Lower display shows CAL Instrument cannot be
calibrated See sections 4.3 and 5.2
Lower display shows MA 4-20 mA loop open Check wiring. See sections
2.3.2 and 6.2
Lower display shows CLN No contact to ultrasonic
cuvette See section 7.1
Lower display shows DESC Desiccant pouch bad Change desiccant pouch. See
section 9.2
Lower display shows LAMP Lamp failed The lamp has to be replaced.
Refer to section 9.3
Lower display shows FLOW Sample flow has stopped Restore flow. Contact WTW
about factory installed option
Lower display shows FAIL System error Refer to section 8.1 & 8.2
Readings are higher than
expected Bubbles in solution Ensure that the drain vent is
open and is not obstructed. See
section 2.2.2
Apply backpressure. See
section 2.2 and figure 4
For severe cases of bubbles a
stilling chamber is available. Call
WTW.
Condensate or leaky cuvette Check flow through cuvette for
condensate or leaks.
Flow through cuvette dirty Clean the cell. See section 9.1
Instrument out of calibration Recalibrate. Refer to section 4
Readings are erratic Bubbles in solution See above
Debris in flow through Clean debris from cuvette
Readings are lower than expected Instrument out of calibration Recalibrate. Refer to section 4
Upper display flashes Sample over-range Check sample. Sample may be
too high to read.