Thermo Scientific thermoscientific Vanquish Pumps C, Operating Manual

Page: 145 / 296

7 • Maintenance and Service
Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual Page 145
Figure 41: Installing the spacing tool and pistons
No. Description
1 Pistons
2 Spacing tool
6. Push in the pistons until they contact the tool.
7. Remove the spacing tool. Be careful not to pull out the pistons any
further.
8. Install the pump head (see Installing the Pump Head ( } page 140) ).
9. Flush the seal wash system with seal wash liquid (see Flushing the
Seal Wash System (
}
page 143) ).
10. Purge the pump using the solvent of your application.
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 the Chromeleon software, consider updating the Predictive
Performance information for the pistons.
13. Optional: Test the system wash system and pump for leakage (see
Testing the Seal Wash System for Leakage ( } page 130) and Testing
the Pump for Leakage (General Test) ( } page 179) ).
14. Recommended: From the Chromeleon software, perform
performance qualification for the pump:
¨
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 .
¨
When the tests are completed, execute the QualificationDone
command.