Rear Panel Functions - BIO RAD EP-1 Econo Pump Instruction Manual

These lights indicate the units for the
Indicator Lights
value displayed on the LED display
located to the left. A flashing light
indicates that a value can be set using
the Arrow keys.
Run/Stop Key This key is used to start or stop the
pump. It also has secondary func-
tions such as holding or aborting a
method.
This key is used to prime and purge
Purge Key
tubing lines without disturbing the pri-
mary speed setting of the pump. When
Purge is pressed, the pump will run at
maximum speed (25 rpm). The purge
key will not operate during a gradient
or fraction collection method.
Direction Key This key changes the direction of
pump head rotation. The Econo Pump
must be stopped before the direction
can be changed.
This key is used to select pre-pro-
Tubing Calibration Key
grammed calibration settings for three
tubing sizes, or allows user calibration
for increased flow rate accuracy or
non-standard tubing sizes. The pump
must be stopped for this key to oper-
ate.
This key is used to set fraction size,
Fraction Collector Key
void volume (to move a diverter valve
to "collect" or "waste" positions), and
total run volume. The total run vol-
ume (V) may be used to program the
pump to automatically shut off after a
given volume has been delivered.
6
Program Run Key
Note: When entering values for tubing calibration or fraction collection
procedures, only the flashing keys are active.

4.2 Rear Panel Functions

Fig. 4.2. Rear panel sockets.
Display
Power Entry Module
Fraction Collector
Output
Diverter Valve Output
7
This key is used to control a pro-
grammed gradient or fraction collec-
tion method. When the indicator light
is flashing, pressing this key starts the
method. When the indicator light is
lit, pressing this key will interrupt the
program, which can be continued by
pressing again. When the LED dis-
plays "FAIL", (indicating a brief
power outage has occurred), pressing
this key continues the program.
Function
Grounded 3-pin receptacle for the
power cord. Also contained within is a
four-position (100 V/120 V/220 V/
240 V) line voltage selector. See
Section 3.2.
This 8-pin connector sends an
advance signal to the Model 2110
Fraction Collector via Econo System
Cable # l.
This 8-pin outlet sends a signal to the
Model SV-3 diverter valve, to divert
flow between collection devices.