Dionex UltiMate 3000 Series, Руководство по эксплуатации

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UltiMate 3000 Series:
SD, RS, and BM Pumps
Page 118 Operating Instructions
Problem Probable Cause Remedial Action
Poor reproducibility
(Cont'd)
The autosampler, the injection
valve, or the syringe valve is not
tight. Inspect the autosampler and
the connections on the
injection valve or syringe
valve. Tighten leaking
connections.
It might be necessary to
replace the injection valve or
syringe valve. In this case,
contact Dionex Service.
The capillary connections are not
installed properly or they are not
tight. Check and tighten the
capillary connections.

Consider replacing the needle
port (

Autosampler
Manual ).
Consider replacing the needle
(

Autosampler Manual).
There are dead volumes in the
capillary connections. Replace the fittings. Make
sure that the capillaries are
connected correctly.
The piston seals are leaking. Replace the piston seals
(

page 135).
There is air in the working
cylinder.
Purge the pump (

page 54).
There is pump pulsation. Use degassed solvents.
Check the compression value
for the pump head
(

page 128).
The gradient is irreproducible. Change the gradient.
Check the pump function and
degassing.
Check the filter frits in the
solvent lines for
contamination and replace as
necessary.
There are shifts in retention
times. Check the compression value
for the pump head
(

page 128).
The sample is unstable and
decomposes. Use new sample or change
the conditions.
The environmental conditions are
unstable. Make sure that the
temperature and the humidity
are constant. Avoid draft. Use
a column compartment.
Contamination occurs
somewhere in the system.
Flush the system using an
appropriate solvent.