ASXPRESS PLUS Rapid Sample Introduction System Operator’s Manual
Chapter 4: Preparing an ASX-260 or ASX-520 Autosampler
30
Figure 4-5 Rinse Intake Tube
Installing the Gravity Drain with External Pump
If your autosampler has an "older" built-in peristaltic pump, it is not fast
enough to provide an adequate flow of rinse solution when the ASX
PRESS PLUS
system is used. An external peristaltic pump, which is faster than the one built
into the autosampler, must be used to supply the rinse station.
The pump is powered by the ASX
PRESS PLUS electronics module.
Use only the pump provided with the ASXPRESS PLUS system.
1 Connect a container of rinse solution to one input of the external pump, and let
the other input take in air.
2 Connect the outputs of the pump via a Y connector and then to the inlet port of
the rinse station.
3 Connect the outlet of the rinse station to a waste container through a gravity
drain.
4 Connect the power cord of the pump to the EXTERNAL PUMP connector on the
ASX
PRESS PLUS electronics module.
Notes
The air bubbles help scrub the tubing.
Rinse solution may be recycled by directing the waste tube into the rinse
solution container, if appropriate for your application.
Make sure that the end of the waste tube is above the surface of the liquid in
the container.
A short length of 1/4" OD tubing is used as an intake "straw."
The built-in peristaltic pump is not used, because it is not fast enough to keep
up with the ASX
PRESS PLUS system.
Alternatively, one channel of the external peristaltic pump can feed rinse
solution into the rinse station, while the other channel drains the rinse station.
A short length of 5/16" OD tubing can be connected to the output port of the
rinse station, then connected with an adapter to the 1/4" OD tubing. This
makes it easier to remove the tubing from the rinse station.
CAUTION
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