Replacing The Outlet Check Valves - Thermo Scientific thermoscientific Vanquish Pumps C Operating Manual

7 • Maintenance and Service
7.7.2

Replacing the Outlet Check Valves

Page 164
NOTICE
Overtightening may damage the valve cartridge. The torque should not
exceed 10 Nm.
6. On the valve nut, reconnect the tubing.
7. Rinse the pump thoroughly:
Use the solvent for your application.
¨
Open the purge valve to prevent the rinsing liquid from entering
¨
the Vanquish system.
8. Inspect the inlet check valve and fitting connection for indications of
leakage. Tighten leaky connections when the system pressure is
down to zero.
9. Optional: Test the pump for leakage (see
Leakage (General Test)
The picture shows the parts that must be removed.
Figure 57: Replacing an outlet check valve (example, here VF-pump)
No. Description
1 U-tube
2 Outlet check valve, including
2a Valve nut
2b Valve cartridge
3 Pump head
Testing the Pump for
(} page 179)).
Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual