Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 169

Viscosity Measurement failed (Classic Flow Meter only)
Probable Cause
After the piston seals have been
replaced, the new seals do not
yet seal sufficiently tight.
Solvent Calibration failed (ProFlow Flow Meter only)
Probable Cause
After the piston seals have been
replaced, the new seals do not
yet seal sufficiently tight.
Mixer Frit Test failed
Probable Cause
The backpressure has exceeded
the limit. The filter frit in the
inline filter may be blocked.
Degasser Vacuum Test failed
Probable Cause
The degasser module did not
reach the appropriate operating
vacuum.
Operating Instructions
Remedial Action
Purge the flow meter for another 30 to 60 minutes (→ page 75).
Afterward, repeat the test.
If the test fails, information about possible causes and suggested
remedial actions are provided also on the last page of the wizard
guiding you through the test. Follow these instructions and repeat the
test.
Remedial Action
• Perform a detailed leak test (→ page 134). Afterward, repeat the
solvent calibration.
If the test continues to fail, information about possible causes and
suggested remedial actions are provided also on the last page of
the wizard guiding you through the test. Follow these instructions
and repeat the test.
• The purge screw may be open. Close the purge screw.
• The piston seals may be worn out. Perform a detailed leak test
(→ page 134). Replace the piston seals (→ page 194).
• The capillary between pump head and flow meter may be leaking.
Check the capillary and replace it, if required.
• The fitting plug in the pump head may not be tight. Tighten the
plug.
Remedial Action
Replace the filter frit (→ page 209).
Remedial Action
Check the tubing of the vacuum system and the degasser module and
repeat the test. If the test fails again, the degasser module may be
defective. Contact Service.
UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Page 161