Thermo Scientific Dionex UltiMate 3000 Series, Operating Instructions Manual

Page: 170 / 270

UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Page 162 Operating Instructions
Performance Test failed
Test Result Probable Cause Remedial Action
The pressure/% compression
was outside specification!
Eluent may not have been
degassed correctly.
Degas the solvent.
It is likely that the wrong eluent
was chosen in test step 1
(Prepare Pump).
Repeat the test. Make sure that the
correct eluent is chosen.
There may be air bubbles in the
pump head.
Purge the pump ( → page 72).
The check valves may not be
working correctly.
Replace the cartridges
( → page 182).
The piston seals are leaking. Replace the piston seals
( → page 194).
Backpressure may have
fluctuated due to problems with
the restrictor. The restrictor may
be blocked.
Replace the restrictor.
The pressure was outside
specification.
The pressure was outside the
upper and lower pressure limits.
Repeat the test with changed flow
settings.
The % compression value was
over the limit!
There are air bubbles in the
pump.
Purge the pump ( → page 72).
The flow may have been too
high.
Repeat the test with reduced flow.
The % compression value was
below the limit!
The flow may have been too
low.
Repeat the test with increased flow.
The purge valve may not be
closed completely.
Close the purge valve.
Pressure ripple was too high. There may be a mechanical fault. Repeat the test. If the test fails
again, contact Service.