Bio-Rad BioLogic Signal Import Module (SIM) User Manual
Page 55
2.8.2 Model EP-1 Econo Pump
The Model EP-1 Econo pump is a two-channel, bi-directional, variable speed peristaltic pump for low-
pressure chromatography. The EP-1 offers a full range of features to facilitate ease of use as a stand-alone
pump or as an accessory to the DuoFlow System to load large volumes onto low pressure columns. This
instrument is described in detail in its separate documentation. Features of the EP-1 include:
•
The EP-1 has preset calibration for common tubing sizes and manual calibration for nonstandard
size tubing.
•
It controls various fraction collectors, including the BioFrac, Model 2110, and Model 2128 fraction
collectors.
•
It can control the run length with a programmable total run volume.
•
It is coldroom compatible.
Figure 2-24. Model EP-1 Econo Pump
The EP-1 Econo pump is ideal for loading samples onto a low-pressure column. When using a low-pressure
column, such as an Econo-Pac cartridge, remove the 40 psi backpressure regulator from the post-column
position. Place it at the outlet of the Workstation pump. This will allow the check valves to properly seat and
ensure pump flow performance.
The EP-1 Econo pump must contain firmware version 2.12 or higher to function with the BioLogic DuoFlow
system. To confirm the firmware version, simultaneously press and hold down the Direction key and the
down arrow key on the front panel of the EP-1 Econo pump. If the Econo pump does not have the correct
firmware version, contact BioRad for information on how to upgrade the pump.
The EP-1 Econo pump receives start/stop signals only. The flow rate of the EP-1 Econo pump is set from
the pump, and the flow rate is recorded in the yellow data entry boxes of the Load/Inject Sample dialog box.
The DuoFlow system starts/stops the Aux pump and cannot control the flow of the EP-1 Econo pump. The
correct flow rate must be set at the EP-1 Econo pump.
Consult the EP-1 Econo pump user's manual for additional information.
ECONO PUMP
ml
min
ml/min
%
0.8
1.6
3.2
CAL
Vo
Vt
DESCRIPTION OF SYSTEM COMPONENTS
SYSTEM OVERVIEW
2-42