Ametek Thermox Series 2000 WDG-IV, Руководство пользователя

Страница: 129 / 193

Maintenance and Troubleshooting | 6-3
Error Messages
Error messages on the control unit display indicate problems with the
operation of the analyzer. Use this section to see the types of problems
your error message indicates, then go to the “Diagnostic Checks” section
at the end of this chapter for help on how to perform diagnostic checks
to pinpoint the problem area. Note that you should always perform the
easiest checks first. Only perform the more difficult checks if the easiest
checks don’t locate the problem.
Message Explanation
Cell is Over Temp Indicates that the sensor temperature is 30°c or more over its cor-
rect operating temperature. The software shuts off the furnace until
the temperature returns to a normal operating range.
If this message soon goes away, it indicates that the temperature
has returned to an acceptable range. If there is a problem with the
sensor temperature control system, you will see another error mes -
sage after this message appears.
Combustibles Cal Error Indicates that the combustibles detector calibration failed because
of an abnormally low signal. Once this error occurs, calibration of
the system is aborted. This message indicates a problem either with
your calibration setup or the combustibles detector.
Excessive Cal Error If a primary calibration cannot correct the sensor temperature within
the software’s allowable limits, this message displays to indicate the
primary calibration has failed. This message could indicate one of
the following problems:
•
•
•
•
calibration gas setup problem
Process pressure incorrectly entered
Failed cell
Leak or plug in plumbing
Memory is Corrupted Indicates that the control unit’s internal EEPROM memory has
been corrupted, or a significantly new version of software has been
installed in the control unit. Under these conditions, the software will
reprogram the EEPROM with the factory default values. You can
acknowledge this error message by setting or reading any user pro -
grammable value, and this will clear the message from the display.
This message will not clear by removing and restoring power to the
unit.
If you receive this message, you should reset your control unit to
the values required for your application, including Setup key param -
eters, Calibrate key parameters, etc...
Methane Cal Error Indicates that the methane detector calibration failed because of
an abnormally low signal. Once this error occurs, calibration of the
system is aborted. This message indicates a problem either with
your calibration setup or the methane detector.