Thermo Scientific thermoscientific Vanquish Pumps C, Operating Manual

Page: 166 / 296

7 • Maintenance and Service
Page 166 Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
5. Insert the new cartridge into the valve nut. Insert the cartridge in
the direction of flow (indicated by the arrow on the cartridge).
6. Screw the valve nut into the pump head and tighten with the open-
end wrench.
NOTICE
Overtightening may damage the valve cartridge. The torque should not
exceed 10 Nm.
7. Reinstall the U-tube.
8. Reconnect the capillary that connects the pump head to the purge/
sensor unit. Observe the following:
Install the capillary in the direction of solvent flow. Note that one
end of the capillary is longer than the other end. Connect the longer
end to the pump head.
9. Rinse the pump thoroughly:
¨ Use the solvent for your application.
¨ Open the purge valve to prevent the rinsing liquid from entering
the Vanquish system.
10. Inspect all flow connections on the pump head for indications of
leakage. Tighten leaky connections when the system pressure is
down to zero.
11. Optional : Test the pump for leakage (see Testing the Pump for
Leakage (General Test) ( } page 179) ).