Bio-Rad BioLogic Signal Import Module (SIM) - Manual (Page 99)

Figure 4-7. Backpressure Regulator
The backpressure regulator is required to help eliminate bubbles from becoming trapped in the
detector flow cell.
When using low pressure columns such as an Econo-Pac
® cartridge or Econo column, plumb
the 40 psi backpressure regulator at the Workstation pump outlet. This aids in seating the check
valves, preventing permanent damage to the cartridge or column.
Refer to section 2.9.5, for more information.
8. Connection to a Fraction Collector.
Connection to a BioFrac Fraction Collector
a. Use the tube labeled #6 in the fittings kit or make a fitting using 1/16” (1.6 mm) OD orange
PEEK tubing and 1/4-28 fittings.
b. Connect the fitting between the Conductivity flow cell (or the backpressure regulator or pH
monitor flow cell, if they are installed) and the BioFrac. (For complete instructions, refer to the
documentation for the BioFrac fraction collector.)
Connection to a Model 2128 Fraction Collector
a. Use the tube labeled #6 in the fittings kit or make a fitting using 1/16” (1.6 mm) OD orange
PEEK tubing and 1/4-28 fittings.
Assure that the tubing length allows unrestricted movement of the fraction collector arm.
b. Connect the fitting between the Conductivity flow cell (or the backpressure regulator or pH
monitor flow cell, if they are installed) and the drop-head of the Model 2128 or the Model 2128
diverter valve. (For complete instructions, refer to the documentation for the Model 2128 fraction
collector.)
Connection to a Model 2110 Fraction Collector and a SVT3-2 Fraction Collector Diverter
valve.
a. Connect a piece of 1/16” OD orange PEEK tubing between the Conductivity flow cell (or the
backpressure regulator, if that was installed) and the SVT3-2 valve common port (labeled
“Common”) using the 1/4-28 fittings.
b. Connect a piece of 1/16” OD Tefzel tubing from port 1 of the SVT3-2 valve (see Figure 4-3) for
use as a waste line.
c. Connect a piece of 1/16” OD Tefzel tubing from port 2 of the SVT3-2 valve (see Figure 4-3) to
the Model 2110 fraction collector drop-head. This tubing sits inside the drop-head, and no fittings
are required.
FLOW DIRECTION
SYSTEM PLUMBING SYSTEM INSTALLATION AND SETUP
4-7