Troubleshoot
July 29, 2013, 715003794 Rev. B 249
Baseline noise,
random
Air in detector Purge detector to remove air.
Solvents not properly
degassed
Degas solvents.
Bubble detected Reprime the solvent
management system. Remove
and vacuum filter solvents.
Solvents contaminated Use fresh solvent.
Column contaminated Clean/replace column.
Dirty flow cell Clean flow cell.
Analog output cable not
properly connected
between the separations
module and data
system, recorder, or
integrator
Properly connect cable.
System improperly
grounded
Plug into outlet on different
electrical circuit.
Use power conditioner.
Recorder voltage
incorrect
Set recorder to correct voltage.
Unit not cooling
properly
Operate unit with covers in
place. Confirm prescribed
clearance at the rear of device.
Perform the Defrost Sample
Procedure (see “Defrost
sample heater/cooler function”
on page 240).
Radio frequency noise Eliminate interference.
Defective detector Troubleshoot detector.
Chromatography troubleshooting: (Continued)
Symptom Possible cause Corrective action
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