Waters Prep Series - Page 105

Troubleshooting 3-21
Baseline noise, random Air in detector Purge UV detector to
remove air.
Solvents not properly
degassed
Sparge solvents.
Flow erratic, pump not
primed
Prime the pump; check
for air in the pump,
failing seals.
Solvents contaminated Use fresh solvent.
Column contaminated Clean or replace
column.
Dirty flow cell Clean flow cell (see
detector
documentation).
Analog output cable not
properly connected
between the Prep
system and data
system, recorder, or
integrator
Properly connect cable.
System grounded
improperly
Plug all system
components into a
single power strip.
Recorder voltage
incorrect
Set recorder to proper
voltage.
Unit not cooling
properly
Operate unit with
covers installed.
Radio frequency noise Eliminate interference.
Defective detector Troubleshoot detector.
Chromatography troubleshooting (Continued)
Symptom Possible cause Corrective action