Thermo Scientific thermoscientific Vanquish Pumps C, Operating Manual

Page: 252 / 296

10 • Modifying the Pump for Specific Applications
Page 252 Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
Routine and Preventive Maintenance
• Observe the information in Routine and Preventive Maintenance
( } page 122) .
• Depending on the application, slightly increased abrasion may be
observed with normal-phase piston seals. Therefore, consider
testing the static mixer for permeability at shorter intervals (see
Testing the Static Mixer for Permeability ( } page 168) ).
Testing the Pump for Leakage
Follow the instructions in Testing the Pump for Leakage (General Test)
(
}
page 179) . With one exception, all values in the procedure that are
specific for the VC‑pump equally apply to the modified VC‑pump.
Exception
When the pressure is 55 MPa, apply the flow indicated in the table and
proceed with observing the pressure. The pressure should increase or
remain constant for a minimum of 1 minute. If you observe a drop in
pressure, find and eliminate the cause for the leak as appropriate.
Pump (modified) Flow
Modified VC-pumps except VC‑P10 4 µL
Modified VC‑P10 6 µL