User guide

Problem Problem Corrective Action
Code Text
String
I-E67-84-1B February,2002 14-5
PC46 HI.GL.AD 1) Input PCB glass pH impedance circuit failure
exists. Disable diagnostics and order replacement
pH/ORP/pION Input PCB Assembly. Existing PCB
should properly function until new assembly is
received.
PC47 LO.GL.AD 1) See PC46 corrective actions.
PC48 HI.C.CKT 1) Verify sensor wiring is properly connected.
2) Remove any liquids, oils, scales or corrosion from
TB84PH terminal block or extension cable junction
box terminals. Replace extension cable if
corrosion is present.
3) Electronically test the sensor. Replace sensor if
sensor does not meet requirements.
4) Input PCB cable diagnostic circuit failure exists.
Disable Diagnostics and order replacement
pH/ORP/pION Input PCB Assembly. Existing PCB
should properly function until new assembly is
received.
PC49 LO.C.CKT 1) See PC48 corrective actions.
PC50 HI.CA.AD 1) Input PCB cable diagnostic circuit failure exists.
Disable Diagnostics and order replacement
pH/ORP/pION Input PCB Assembly. Existing PCB
should properly function until new assembly is
received.
PC51 LO.CA.AD 1) See PC50 corrective actions.
WARNING All error conditions are considered
catastrophic. When such an error has been
reported, the analyzer should be replaced
with a known-good analyzer. The non-
functional analyzer should be returned to the
factory for repair. Contact the factory for
a Return Materials Authorization (RMA)
number.
SENSOR TROUBLESHOOTING
If the sensor is suspected of being the source
of problems, a quick visual inspection in many
cases will identify the problem. If nothing
can be seen, a few electrical tests using a
digital multimeter can be performed to
determine if the sensor is at fault. Some of
these tests can be performed with the sensor
either in or out of the process stream.
Visual Sensor Inspection
Remove the sensor from the process and