Thermo Scientific Dionex ICS-5000, Operator'S Manual

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Dionex ICS-5000 Operator’s Manual
238
Doc. 065342-06 12/11
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Priming valve knob leaks
If leaks occur when the priming valve knob is open, close the knob
completely and then open it one-half to three-quarters turn. If this does not
stop the leakage, replace the seal in the priming valve knob (see
Section 9.10 ).
If leaks occurs when the priming valve knob is closed, either the pump
head or the knob is damaged and should be replaced. Contact Technical
Support for Dionex products for assistance.
•
Excessive system backpressure
If system backpressure is substantially higher than the normal operating
backpressure for the currently configured system (including the column),
tubing may be plugged or overtightened. Refer to the troubleshooting
steps for the Audit Trail message
“The system pressure exceeded the
safety limit.” on page 233 .
8.16 Vacuum Degassing Module Low Vacuum
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Leak in the vacuum degassing module
Check all tubing connections for leakage; tighten loose fitting
connections.
8.17 Vacuum Degassing Module Does Not Run
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Electrical connections incorrectly installed
There may be a problem with the connections from the vacuum degassing
module to the CPU board. Contact Technical Support for Dionex products
for assistance.
NOTE
The Thermo Scientific Dionex ICS-5000 Ion Chroma-
tography System electronics components cannot be
serviced by the user.