D-Series Syringe Pumps - Isco

D Series Syringe Pumps
Section 8 Continuous Flow Introduction, Installation, & Operation
8.6.2 Continuous Flow
Features
Volume Totalizer
To reset the volume totalizer
to zero
Valve Specification
The following features are used to define your continuous flow
operation.
The total volume delivered (in liters) is given on the display at
the right top corner.
1. Press the orange MENU key on the controller front panel.
2. Press softkey A, MORE, to access the second page of the
main menu.
3. Press 5 on the numeric keypad to select 5. TOTAL VOL-
UME RESET.
4. Press softkey D, PREVIOUS, twice to return to the run
screen. The displayed volume will be zero.
It is important to specify in the menu the type of valve package
being used for continuous flow. This will assure minimum
pressure fluctuation at switchover.
To specify valves installed
8.7 Operating Tips and
Guidelines
Operational Overview –
When using liquids
1. Press the orange MENU key on the controller front panel.
2. Press softkey A, MORE, to access the second page of the
main menu.
3. Press 6 on the numeric keypad to select 6. VALVE.
4. Press 1 or 2 on the numeric keypad to specify Active (air
actuator) or Passive (check valves) installed.
5. Press softkey D, PREVIOUS, three times to return to the
run screen.
The following tips and guidelines are provided by our research
laboratory. Please familiarize yourself with them before operating
your continuous flow system.
• Temperature changes can cause pressure fluctuations,
especially if a restrictor is being used for backpressure.
• Pressure limits for continuous constant flow mode are
set by the limits of pump A.
• For correct overpressure response, overpressure
shutdown must be set to shutdown “ON” under pump
limit options.
• Always check the flow rate before pressing the RUN key,
especially after using the pump in a mode other than
continuous flow. For example, a flow rate can be carried
over from independent mode control of pump A.
• Refill rates: As a rule of thumb, the refill rate should be
at least twice the flow rate setpoint (in continuous
constant flow) to allow time for refill and repressurization
before the next switchover. The same refill rate
should be entered separately for pumps A and B.
1. Degas liquids if appropriate.
2. Fill both pumps completely.
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