Figure 5-1. Defining the Direction of Pumping
3. To change the direction of pumping, press the INLET SELECT key. The lit, green
LEDs change positions. Fluid flows in the opposite direction.
4. To change back to the original direction of pumping, simply press the INLET
SELECT key again.
5.3 Selecting the Tubing Inner Diameter
The TUBE ID, and UP and DOWN ARROW keys allow you to select the inner
diameter of the tubing.
With the peristaltic pump motor, you can either select a tubing size from
those shown in the display (using the TUBE ID key), or you can calibrate
each piece of tubing you use (using the CALIBRATE key, as described in
Section 5.5).
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