ASXPRESS PLUS Rapid Sample Introduction System Operator’s Manual
Chapter 5: Preparing an ASX-1400/1600 Autosampler
58
Connecting the Rinse Tubing
A diaphragm pump provides the required rinse solution flow rate.
Two channels of the autosampler’s built-in peristaltic pump add room air to
create bubbles, which help scrub the tubing.
Recommended tubing: Air lines – PharMed™; Rinse solution – Viton™, Tygon™
Fuel and Lubricant, or Superthane™.
1 Place the diaphragm pump near the autosampler.
The pump is included in the upgrade kit.
2 Connect the pump to the EXTERNAL PUMP connector on the ASXPRESS PLUS
electronics module.
3 On the back of the autosampler, turn both the Auxiliary and Main Pump Speed
knobs to their maximum settings.
Figure 5-7 Pump Speed
4 Connect the rinse station to the built-in peristaltic pump, the diaphragm pump,
and the rinse solution container as shown in the following diagrams.
Install a filter and a check valve before each intake of the diaphragm pump.
The rinse station may be gravity drained if the waste receptacle inlet is at least
30 to 60 centimeters lower than the ASX
PRESS PLUS Rapid Sample Introduction
System vacuum pump outlet (see Figure 5-8). If that is not possible, or if the
rinse station is overflowing, contact CETAC Technologies.
Set up so that the rinse drain tubing drops directly into the waste receptacle
with no coiling and without being submerged below the liquid level of the
waste receptacle.
The figures show a single container which recycles rinse solution. Due to the
high flow rate of rinse solution, this is the most practical configuration for
many applications. Separate containers for clean and contaminated rinse
solution may be used if necessary.
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