Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 57

• The backpressure on the flow cell must not exceed 20 bar (analytical flow cell) or 40 bar
(micro flow cell). Do not connect any capillaries or instruments to the flow cell out line
as this might generate a higher backpressure. Even if the pressure exceeds the upper limit
for a very short time only, the flow cell may be permanently damaged. If it is required to
connect a valve at the flow cell outlet, the valve may only be switched while the flow is
stopped. When switching valves while the flow is turned on, pressure peaks may occur
and destroy the flow cell. Thermo Fisher Scientific recommends using a capillary or tube
with an internal diameter of at least 0.5 mm at the flow cell out line.
Installing the Flow Cell
1. Remove the cover on the flow cell opening (if installed). To do so, loosen the two
finger-tight screws. No tools are required to loosen the screws. The screws are captive
in the cover and do not need to be removed.
Operating Instructions
Fluorescence Detectors FLD-3100 and FLD-3400RS
Fig. 16: Removing the cover
UltiMate 3000 Series:
Knurled screws of the
flow cell opening cover
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