Waters 2410 Operator's Manual page 93

Table 7-1 Abnormal Baseline Troubleshooting (Continued)
Symptom
Short-term noise cycling
(30 sec to 60 sec)
Long-term noise cycling
(approximately 1 hour)
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Possible Cause Corrective Action
Pump pulsing Add pulse dampener.
Inadequate solvent Connect high-flow pulse
blending in pump dampener.
Use gradient mixer.
Flow fluctuating Stabilize flow (see pump
operator's manual).
Solvent not mixed Stir the solvent.
(short- or long-term
cycling)
Faulty check valve Clean/replace/rebuild
pump check valves.
AC power source (short- Disconnect other
or long-term cycling) instruments on the power
line, try a different wall
outlet, have line voltage
checked, use power
conditioner.
Radio frequency noise Eliminate interference.
(short- or long-term
cycling)
Ambient temperature Stabilize ambient
fluctuations temperature.
Integrator or recorder Check integrator or
faulty recorder for excessive
baseline noise.
Faulty check valve Clean/replace/rebuild
pump check valves.
Chromatography Troubleshooting
7
92