Corrective Action
Possible Cause
Issue
Press
Purge
to wash away the mobile phase
completely. Vibrate the suction filter to remove the air
bubbles. When the suction filter becomes clogged,
perform an ultrasonic rinse. If the ultrasonic rinse has
no effect, then replace the filter. Degas the mobile
phase.
9
Air bubbles have entered
the suction filter tube.
Pumping is unstable and
the pulsating flow of the
pump is excessive.
The flow rate is less than
the set value.
Press
Purge
to remove air bubbles. Alternatively,
connect a syringe to the end connection of the drain
tubing to remove the air bubbles. Refer to
There are air bubbles inside
the pump head.
Press
Purge
to wash away the mobile phase
completely. Vibrate the suction filter to remove the air
bubbles. When the suction filter becomes clogged,
perform an ultrasonic rinse. If the ultrasonic rinse has
no effect, then replace the filter. Degas the mobile
phase.
8
Previous mobile phase
remains inside the pump
head.
Contact an FSE to have the plunger seal or plunger
replaced, as necessary.
Liquid leaks from the gap
between the pump head
and head holder.
Contact an FSE to have the plunger seal or plunger
replaced, as necessary.
Liquid flows from the
plunger seal.
Close the drain valve.
8
The drain valve is open.
Tighten the connector. If tightening does not stop the
leak, then replace the connector.
Liquid flows from a
connection in the flow line.
Perform an ultrasonic rinse of the line filter or replace
it.
The line filter is clogged or
nearly clogged.
Close the drain valve.
8
The drain valve is open.
The pressure does not rise.
Tighten the connector. If tightening does not stop the
leak, then replace the connector.
Liquid flow from the
connection part of the flow
line.
Perform an ultrasonic rinse of the line filter or replace
it.
The line filter is clogged.
The pressure becomes too
high.
Use the specified pipe.
The inside diameter of the
tubing is too thin.
9
Use the procedure in
Causes of and Countermeasures for Clogging in Flow Lines
to remove the connections downstream from the flow line sequentially
and check the pressure.
Hardware User Guide
ExionLC
™
100 System
RUO-IDV-05-1839-C
174 / 219
Troubleshooting