VI-
Troubleshooting
Thermo Scientific Orion 2111LL Sodium Monitor User Guide
ROSS and the COIL tradedress are trademarks of Thermo Fisher Scientific Inc. US Patent 6,793,787
Malfunction
Possible Cause
Remedy
No Air Bubbles
Air line crimped or
disconnected
Check air line. Repair as required
Pump failure
Replace if necessary
Does Not
Calibrate
Properly
Contaminated standards,
pipette or pipette tips
Use new standard solutions. Replace tips
Standards intercharged
Repeat standards in correct sequence
using standard 1 and then standard 2.
Refer to
Chapter IV
Background concentration too
high for standards used.
Repeat standards in correct sequence
using standard 1 and then standard 2.
Refer to
Chapter IV
Pipette technique
Use correct pipette technique.
Refer to
Appendix
Reagent diluted or
contaminated
Replace DIPA reagent. Refer to
Chapter II
Flow cell contaminated
Rinse flow cell with de-ionized water.
Flush flow cell overnight with flow at
calibration liquid level. Refer to
Chapter IV
Temperature probe failure
Disconnect ATC. Display should
read default 25 ˚C (E101). Replace if
necessary
Electronics failure /
Bad setup
Try resetting the monitor. Refer to
Chapter VI
High Readings
Monitor out of calibration
Recalibrate. Refer to
Chapter IV
Monitor flow cell
contaminated
Rinse flow cell with de-ionized water.
Flush flow cell overnight with flow at
calibration liquid level. Refer to
Chapter IV
Inlet filter just replaced
Flush one hour. Refer to
Chapter IV .
If offline calibration performed, verify
accuracy of alternate method value.
Refer to
Chapter IV
Reagent spent or diluted
Replace reagent. Refer to
Chapter II
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