9. Use arrow key to select “VOLTAGE INPUT” and press ENTER key. Press ENTER key again and
press up arrow once, then press ENTER once more. This will set “MIN.” to 0.1 VDC
10. Press the down arrow until “EXIT” appears on bottom left. Press left key to select “EXIT” and
press ENTER key
11. Use arrow key to select “START/STOP” and press ENTER key
12. Select “ON” and press ENTER key
13. I/P Digital Peristaltic pump is now in Remote Control Mode and ready to use after
configuring KMPi
10.2.2 Auxiliary Pump Settings
In order for the TFF system to control the Auxiliary Pumps properly, input the Auxiliary Pump type
and the tubing size being loaded into the Auxiliary Pump pump heads. Refer to Section 7.9.2 for
setting the RPM and Tubing Size on the Pump Control Screen on the PC or Section 7.10.3 for setting
the Aux Pump settings on the main pump console.
10.3 Automatic Backpressure Valve
The KrosFlo® Automatic Backpressure Valve controls a wide variety of pressure set-points during
tangential flow filtration processes when used in conjunction with the TFF System. The valve is
designed to pinch flexible tubing to maintain the user-set pressure. Up to one ABV may be
connected to the KR2i, while up to two ABV's may be connected to the KMPi.
10.3.1 Installation
Plug in the valve serial port to the serial connector labeled "Valve" on the Octopus Cable. For the
KMPi choose Valve 1 if only using one valve. The valve is powered through the octopus connector.
Place the tubing through the plunger mechanism by lifting up on the body of the valve and fitting
the tubing between the metal bar and the white plastic plunger. The body of the valve can then be
turned 180 deg to close the tubing opening by using the longer stainless steel rods or let the tubing
opening remain accessible with the shorter rods.
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