Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 199

3. Reconnect the fluid connections on the pump head.
Observe the following:
Loading Pump
When installing the capillary from the pump head to the purge unit, make sure that you
install the capillary in the direction of solvent flow. Note that one side of the capillary is
longer than the other is. Connect the longer side to the pump head.
NC pump and loading pump
When you attach the solvent supply line to the inlet valve, take care to avoid cross-
threading.
Observe the information about connecting capillaries and about the different fitting
connections on page 57.
4. Follow the appropriate steps for the pump for which you want to install the pump
head:
♦ NC pump: See further down on this page
♦ Loading pump: See page 192.
NC Pump
5. Connect the pressure transducer cable to the P-Work connector on the interior front
panel.
When reinstalling the pump head you removed
If messages relating to the working pressure appear on the pump display (for example,
'Implausible right working head pressure' or 'Implausible left working head pressure'),
verify that the cable of the related pressure transducer is properly connected.
When installing a replacement pump head
Messages relating to the working pressure of the pump appear on the pump display.
Ignore these messages for the moment. However, verify that the cable of the related
pressure transducer is properly connected.
6. Return the pistons into the appropriate position for normal operation. To do so,
perform the command for the pump head that you want to install:
♦ On the Pump/Maintenance screen on the pump display, select Dock. Wait until the
screen returns to the Main menu before continuing with the next steps.
—or—
♦ In Chromeleon, open the Commands dialog box for the NC pump and perform the
DockPistons command. The command appears under
NC_Pump_Wellness_LeftBlock and/or NC_Pump_WellnessRightBlock.
Wait until the PistonPositionStatus property reports Operational before you
continue with the next steps.
Operating Instructions
UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Page 191