180 of 220 Troubleshooting - Anatel A643a
RPS - June 2007 - Edition 12
Operator Manual Anatel
The following limits apply to each of the Anatel A643a’s Calibration tests. If the limits are
exceeded, a message is logged and printed, and the results of the test will not be saved.
Any questionable problems should be referred to Anatel and the following information should
be included in any correspondence with the factory:
• The instrument’s serial number.
• Sample resistivity and temperature.
• Current and historical TOC data.
• Current and historical alarm codes.
• A Setup Printout.
• Process conductivity or resistivity and temperature.
• Current and historical calibration, validation and system suitability results.
• Any other significant changes in operating conditions.
If existing problems warrant equipment return, contact the Anatel Service Department at:
Hach Ultra Analytics, Inc.
5600 Lindbergh Drive
Loveland, Colorado 80538 U.S.A.
Do not return any equipment to Anatel without a return authorization.
Drain all water from the Analyzer when taking the instrument out of service (see “Draining the
Instrument” on page 181). Residual water will freeze inside the unit, expand and damage the
measurement cell. Such damage is time-consuming to repair and is not covered by the
warranty.
Conductivity
Calibration Test
The meter measurement must meet a tolerance of ±0.1 µS/cm. The
cell constant also must not deviate from the previous calibration by
more than 5%, or the factory calibration by more than 10%.
TOC Calibration Test The percent change in slope must not deviate from the factory
calibration by more than 15%.
System Suitability
Test
If the calculated response efficiency is above 115% or below 85%,
the Analyzer fails the test. A Code 44: Sys Suitability is reported
every eight hours until a new system suitability is successfully
performed.
TOC Validation Test The recognized response must be within ±10% of the given standard
value. A message is logged if the instrument fails the validation test.
Voice: 800-866-7889
+1-541-472-6500
FAX: 1-970-663-9761
Support Hot Line: 800.866.7889
541.472.6500
E-mail: infogp@hachultra.com
Website: www.hachultra.com
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