Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 200

UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
7. Flush the pump head with seal wash solution (→ step 1 on page 186).
8. Depends on whether you install the pump head you removed or a new one
A—Reinstalling the pump head you removed
Thoroughly purge the pump (pump heads and flow meter) (→ page 72).
B—Installing a new pump head
a) This step depends on the flow meter that is installed:
♦ If a Classic flow meter is installed
Run the Pressure Transducer Test (→ page 172). In step 2 of the test, always
select the Calibrate Anyway check box (even if calibration is not explicitly
recommended).
♦ If a ProFlow flow meter is installed
Run the Zero Balance Test (→ page 172).
b) Purge the pump head (→ page 73).
c) Close the flow meter outlet with a Viper fitting plug. Appropriate fitting plugs are
available in the accessories kit of the module.
d) Verify that the purge screws are closed.
e) In Chromeleon, perform the CalibrateWP command for the replacement pump head.
(The command appears in the Commands dialog box for the NC pump under
NC_Pump_Wellness_LeftBlock and/or NC_Pump_Wellness_RightBlock.)
Execution of the command takes about 30 seconds. A message appears only if an error
has occurred.
Note: A primary pressure of 90 MPa builds up during calibration.
If you have replaced both pump heads, repeat the steps above for the second pump head.
9. Purge the flow meter (→ page 75).
10. Visually check the NC pump for leakage while pressure builds up. If leakage occurs
for the NC pump, the message 'Cannot regulate flow' will appear on the pump display
(→ page 149).
Loading pump
5. Return the pistons into the appropriate position for normal operation.
♦ 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 loading pump and perform
the DockPistons command. (The command appears under
LoadingPump_Wellness_RightBlock.)
Page 192 Operating Instructions