Common Operator Errors - Ametek Thermox Series 2000 WDG-IV User Manual

Common Operator Errors

1-8 | Thermox Series 2000 WDG-IV / IVC / IVCM
If you follow the steps below, your analyzer will operate with a minimum
of maintenance and troubleshooting.
Connect the air supply to the aspirator air supply inlet but DO NOT
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turn on the air until the sensor is at operating temperature. If the ana-
lyzer is turned off or the process is shut down, the aspirator air should
be turned off to avoid plugging problems.
If your process is running and the analyzer is installed on the pro-
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cess, the analyzer must have power applied to it to prevent plugged
plumbing and sensor component damage. The case heaters must be
on if the process is running to maintain sensor plumbing above the
process gas dewpoint.
Do not use pipe dope or any other contaminant that gives off combus-

tible vapor on any joints of the sample tubing.
For O calibration gases, do not use calibration gases to check Ther-
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2
mox analyzers if they contain a mixture of oxygen and combustibles.
Note, however, that this is acceptable for combustibles span gases
(used only if you purchased the combustibles option).
Always introduce calibration gases at the recommended flow rate.
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When working on the plumbing inside the sensor cabinet, turn the
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power off. The oxygen cell heater has exposed windings and a short
to the plumbing will blow the fuse and could damage the furnace or
thermocouple.
Caution should be used if performing maintenance on the sensor
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while the process is running. Removing any part of the sensor can
allow process gases and gases of high temperature to escape into the
sensor.
Do not handle the cell excessively. Do not try to clean the cell except
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by rinsing. If you need to handle the cell, grasp by touching the seal
fitting at the top; never touch the bare part of the cell.
Do not remove a cell or type "K" thermocouple that you may want to
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use again when the inside of the furnace is still hot - severe thermal
shock can be destructive to either of them.
Always replace the metal cell O-ring when replacing the oxygen cell.
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