2
Pump P-910
Instructions 56-3000-47 Edition AD
Inserting the tubing
1 Open the door.
2 Push back the
pressure plate.
3 Insert the tubing.
Make sure
the nuts of
the connectors
fit correctly
into
the housing.
4 Close the door. The correct tubing
pressure is set automatically.
Connecting the pump
Pump P-910 is connected to the system with
1/16” diameter PTFE or PEEK tubing, via the
two connectors on the pump tubing.
Connect the outlet
to the upper
connector,
marked 1, and
the inlet to the lower connector, marked 2, as
follows:
1 Cut the tube cleanly at a 45°angle.
2 Remove the connector nut (1) and slip it
over the tubing.
3 Remove the sealing plug (2).
4 Push the tubing through the sealing plug
until it protrudes about 1 cm.
5 Seat the tubing in the nipple (3). Slide
the sealing plug along the tubing onto
the nipple.
6 Fingertighten the connector nut.
3 Operation
Pump P-910 is controlled from a PC running
UNICORN version 2.10 or higher. It cannot
be used as a stand-alone instrument. Control
of the pump can be achieved automatically
from a method, or manually via the functions
available in UNICORN.
Setting the flow rate
1 Select menu
System Control:Manual:Pump
in
UNICORN.
2 Select the instruction
SampleFlow
in
the list.
3 Enter the required flow rate.
4 Click on the
Execute
button. The pump
starts.
5 To stop the pump, set the flow rate to 0.
The pump can be run without liquid, but it
should be avoided due to mechanical wear.
Calibrating the pump
The pump must be calibrated every second
day when in daily use or whenever the
running conditions are changed, e.g. viscosity
of sample or buffer, temperature, back-
pressure, etc. If the pump is not used
frequently it should be calibrated each time.
1 Select menu
System Control: System
Calibrate
in UNICORN.
2 Select
SamplePump.
3 Place the inlet tubing in a bottle of water.
4 Start the pump by selecting
Manual:Pump
and
Sampleflow
. Enter a suitable flow rate,
e.g. 2 ml/min. Click on
Execute.
5 Place the outlet tubing from the pump in a
10 ml measuring cylinder, at the same
time pressing
Start collect
in the
Calibration
box.
6 Let the pump run for 2 min.
7 Press
Stop collect
, at the same time
removing the outlet tubing from
the measuring cylinder.
1
2
3
1
2
Pressure plate
Roller cage
56-3000-47_AD.qxd 1998-10-21 14:17 Sida 2 (1,1)
