3-20 Troubleshooting, Testing, and Maintenance
Baseline noise,
long-term
(approximately 1 hour)
cycling
Ambient temperature
fluctuations
Stabilize operating
environment
temperature.
Integrator or recorder
faulty
Check integrator or
recorder for excessive
baseline noise.
Straight baseline, no
peaks
No pump flow Set pump flow rate.
Lamp not on Troubleshoot detector.
Detector not zeroed Zero detector baseline.
Improper connection
between Prep system
and recorder
Check cabling between
Prep system unit and
recorder.
Incorrect wavelength Check wavelength
setting.
Leak in solvent path Check fittings.
Chromatography troubleshooting (Continued)
Symptom Possible cause Corrective action
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