Software Troubleshooting - Waters Prep Series Installation And Maintenance Manual

RI detector
The table below addresses potential RI detector symptoms that can occur
during operation.
RI detector troubleshooting
Symptom
Spikes on chart; spikes
are synchronous with
pump pulses
Loss of sensitivity
Short term noise or drift Fluctuating ambient

Software troubleshooting

Messages appearing on the controller screens during programming or
operation require a response from you. They can be of two types: warning or
shutdown. Other messages might not fit the above categories and do not
require any action.
Error messages appear on the controller screens during programming when
you make these errors:
• Enter an improper value
• Use an unacceptable entry method
Possible cause
Solvent not properly
degassed
Foreign material in cell
Source LED needs
replacement or is
misaligned
temperature
Dirt in cell
Leak in cell
Corrective action
Degas solvent. Place
solvent at the level or
above the level of the
solvent proportioning
valve to maintain slight
backpressure.
Clean cell and make
sure solvent and
column effluent are
clean.
Call Waters Technical
Service.
Stabilize environment.
Clean cell.
Repair or replace cell
assembly.
Troubleshooting 3-31