TD1000C™Oil in Water Monitor
APPENDIX D: TROUBLESHOOTING
PN 101687
REV G
TD-1000C Oil In Water Monitor
Operation Manual
31
Improper installation, use, application or unauthorized servicing of this equipment voids all
guarantees.
D.3 Troubleshooting Guide
Ensure that all alarms have been addressed prior to proceeding with troubleshooting. Proceed with
the POSSIBLE CAUSES and SOLUTIONS in numerical order.
SYMPTOM
POSSIBLE CAUSE
SOLUTION
HOME screen displays
over/
OVER
(blinking from
over
to
OVER
).
A blinking
over/OVER
indicates
that the sample reading exceeds
999. This is most likely related to
the System Values entered for the
site. If, for example, a Cal Solution
Value of 200 was erroneously
entered, the monitor’s numerical
calculation of the sample reading
might exceed 999.
System Values are incorrect (i.e.,
Fluor Temp Compensation, Cal
Solution Value, etc.).
Check the Configuration Record for
the site. Access the System Values
and verify that they are entered
correctly.
Incorrect calibration
Check the Calibration Data screen.
Recalibrate the monitor; be sure to
use the correct calibration solution
and that the reading is between 1
and 10. Check the expiration date
of the solution.
Controller is, or has been, in alarm
Check active alarms and correct as
required.
HOME screen displays
OVER
(not
blinking from
over
to
OVER
).
A steady
OVER
indicates that
the sample reading is too high
for the monitor’s light detector.
This is related to the chemistry of
the sample and displays that the
sample readings are too high for
the monitor at the current sensitiv-
ity level.
Possible optics problem.
Check the FS% reading in the
Diagnostics sequence.
Incorrect calibration.
Recalibrate the monitor, making
sure that you are using the correct
secondary reference solution, and
that it reads between 1 and 10.
Check the expiration date of the
solution.
System Values are incorrect (i.e.,
Cal Solution Value, Fluor Temp
Compensation etc.).
Check the Configuration Record.
Access the System Values and
verify they are entered correctly.
HOME
screen displays minus
sign (negative readings), i.e.,
sample is reading less concen-
trated than blank as set during
last calibration.
Fouled flow cell.
Thoroughly clean and rinse flow
cell with recommended solution,
using a flow cell cleaning brush if
necessary.
Calibrated with contaminated
blanking solution, or the secondary
reference solution was used instead
of the blank solution.
Recalibrate.
Summary of Contents for TD1000C
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