Thermo Scientific Vanquish VH-P10-A-02, Operating Manual

Page: 144 / 238

7 • Maintenance and Service
Page 144 Vanquish Pumps (VH-P10-A-02) Operating Manual
10.
In Chromeleon, as applicable
♦ When installing a new piston
a) Update the related
Piston Calibration Value
property with
the value from the new piston:
Pump Head Property to be updated
For the left pump head
Left piston
Right piston
Under Pump_Wellness_LeftBlock
PistonCalibrationValue_Drv1
PistonCalibrationValue_Drv2
For the right pump head
Left piston
Right piston
Under Pump_Wellness_RightBlock :
PistonCalibrationValue_Drv1
PistonCalibrationValue_Drv2
The property names in the table refer to the names in the Command window.
b) Run a self-test.
Non-matching values may result in periodic baseline fluctuation
or pulsation.
♦
When reinstalling a piston
Consider verifying that the
Piston Calibration Value property for
the related piston matches the value on the piston.
Non-matching values may result in periodic baseline fluctuation
or pulsation.
11. Inspect all flow connections on the pump head for indications of
leakage. Tighten leaky connections when the system pressure is
down to zero.
12. In Chromeleon, consider updating the Predictive Performance
information for the pistons.
13. Optional
Test the seal wash system and the pump for leakage.
14.
Recommended
Perform performance qualification for the pump:
a) From Chromeleon, run the pump-specific
Performance
Qualification tests (PQ tests) (= Flow Precision Test and Gradient
Accuracy Test). For details, refer to the
Operational and
Performance Qualifications manual
.
b) In Chromeleon, execute the QualificationDone command.