Anatel A643a - Troubleshooting 179 of 220
RPS - June 2007 - Edition 12
Anatel Operator Manual
When quitting a calibration or validation test after a reported failure (Codes 44–50), press the
Manual Key and remove sample vial, replacing it with the sample vessel as prompted. This
precaution ensures that the sample vial won’t accidentally be blown off the sample needle by
pressure applied from an on-line water source.
During an analysis, the TOC and/or conductivity (or resistivity) must fall within an acceptable
range depending on the chemical being measured. A screen identifying the chemical and the
failure value is displayed if the range is exceeded.
Possible causes for this alarm condition are:
• Contamination of the vial and/or sample assembly.
• A blockage or restriction in the sample delivery line, air inlet filter or inlet check valve.
• A restriction in the drain line.
36 In some cases, the accuracy of the reported TOC value may be affected by the presence of
certain ions. This condition occurs primarily in water with less than 5 megohm-cm resistivity.
If it persists, the sample water is unsuitable for Anatel A643a analysis.
37/38 Temperatures outside the range of 5 °C to 95 °C are considered hardware failures. If not, the
sample is beyond the instrument’s specifications.
39/40 An alert that the quality of the sample water is outside the instrument’s optimum
performance range. Measure the resistivity of the sample water. Large discrepancies in the
measurements may be due to a hardware failure; contact
Anatel.
41 Reports a suspended analysis cycle and does not affect instrument operation.
42 Replace the UV lamp (see “UV Lamp Maintenance” on page 158).
44–50 Repeat the test. For an alarm “Code 50,” remove the vial, install the sample vessel and
acknowledge to continue. Contact
Anatel if failure continues.
52 Replace UV lamp as soon as possible. UV Detect has measured UV output that indicate a
the UV lamp is beginning to fail.
53 Replace UV lamp immediately. UV Detect has measured UV output below adequate levels.
XXXXX analysis
failed. XXX ppb
TOC out of range
Press Enter
Fig 14-1 : Failure Identified
Code Corrective Action
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