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Sodium Analyzer 9030
Troubleshooting and Technical Questions

9030 Sodium Analyzer spare parts Spare Parts
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PROBLEM   POSSIBLE CAUSE   SOLUTION
Calibration Failure.   Weak ammonia buffer.   Replace ammonia buffer. Ammonia should be replaced monthly. Discard old ammonia, do not top off.
Calibration Failure.   Standard solutions not flowing.   Check that solenoid valve is actuating during calibration. Make sure standard bottle cap is loosened so a vacuum is not preventing flow. Remove connector from the calibration tube and blow into tube during calibration to ensure there is no blockage. Place standard bottles at highest possible point above analyzer to give maximum fall.
Calibration Failure.   Contaminated or incorrect standards.   Replace standards with those of known value. High standard must be 10X greater then low standard. Recommended low standard is 100ppb. Minimum is 50ppb.
Calibration Failure.   Check placement of reference electrode.   End of reference electrode should be placed only 5-10mm into the sample.
Calibration Failure.   Incorrect standards value input on analyzer.   Check that buttons labeled “STD1” and “STD2” are set to the correct concentrations.
Calibration Failure.   Ammonia not mixing with sample or standards.   Ensure bubbles are seen at bottom of steel straw coming from the entrainment. Check for pinholes or kinks in the tube from the buffer bottle to the entrainment.
Calibration Failure.   Probe maintenance.   Etch measuring probe per procedure in the manual. Check level of KCL solution in reference electrode. Dissolve heavy crystal buildup inside electrode with DI water and refill twice with fresh KCL.
Calibration Failure.   Electrode wiring.   Check that both probes are correctly wired into the junction box. Both the probes and the box will have corresponding labels.
Calibration Failure.   Sample diluting standards.   Calibrate with sample flow turned off to check for a partially open solenoid valve.
Calibration Failure.   Probe failure.   Replace both probes.
Calibration Failure.   Open wiring.   Check the interconnect cable at the orange connector TB3 on the analog board. Be sure connector is firmly seated and wires are not crimped on insulation. With power turned off, check for continuity from orange connector on electronics chassis to inside of pre-amp assembly.
High/Low readings.   Two point calibration.   The analyzer must pass a 2 point calibration. A 2 two point calibration should be performed at least once per month. More often with older probes to reduce drift.
High/Low readings.   Low sample flow.   Incoming sample flow should be set to 100-150ml/min minimum. If a steady, unbroken stream of sample can be seen in the main overflow tube then sample flow is adequate.
High/Low readings.   Probe maintenance.   Etch measuring probe per procedure in the manual. Check level of KCL solution in reference electrode. Dissolve heavy crystal buildup inside electrode with DI water and refill twice with fresh KCL.
High/Low readings.   Weak ammonia buffer.   Replace ammonia buffer. Ammonia should be replaced monthly. Discard old ammonia, do not top off.
High/Low readings.   Ammonia not mixing with sample.   Ensure bubbles are seen at bottom of steel straw coming from the entrainment. Check for pinholes or kinks in the tube from the buffer bottle to the entrainment.
High/Low readings.   Sample PH varying.   The ammonia buffer is designed to bring the sample PH up to 10.7 or higher. If incoming sample is already above this level the readings may vary.
High/Low readings.   Fouling of probe.   Waltron recommends a 60 micron inline filter on the sample line to reduce particulates.
Current outputs (4-20mA) not working.   Current frozen more then 30 minutes after calibration.   Press the reset button.
Current outputs (4-20mA) not working.   Range knob has been changed.   The 20mA output will correlate to the highest end of the selected range.
Display flashes “out”.   Sample concentration exceeds range.   Select higher range position.
Display flashes “out” during calibration.   Normal indication during calibration.   Allow calibration to complete.
Display flashes “hot”.   Sample temperature exceeds 55 degrees C.   Reduce sample temperature.