Thermo Scientific thermoscientific Vanquish Pumps C, Operating Manual

Page: 179 / 296

7 • Maintenance and Service
Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual Page 179
7.11 Testing the Pump for Leakage (General Test)
When
After maintenance on the fluidic system of the pump, for example on
the flow connections, pump head, or check valves
TIP With the dual pump, test each pump separately.
Parts and additional items required
• Fitting plug, Viper
• Solvent suitable for your application
Follow these steps
1. Disconnect the capillary on the pump outlet.
2. Close the pump outlet with the fitting plug.
3. In the Chromeleon software, set the upper pressure limit to the
appropriate value:
Pump Upper Pressure Limit
VC‑pump 60 MPa
VF‑pump 80 MPa
4. Apply a flow of 50 µL/min and use the solvent for the application.
5. Observe the pressure. When the pressure reading is as indicated in
the table, change the flow rate to a lower value.
Pump Pressure
VC‑pump Between 30 MPa and 40 MPa
VF‑pump Between 60 MPa and 70 MPa
6. Have the pump deliver until the following pressure has built up:
Pump Pressure
VC‑pump 55 MPa
VF‑pump 75 MPa
7. When the pressure has built up, apply the following flow:
Pump Flow
VC‑P10, VC‑P20,
VC‑P32, VC‑P40 1 µL/min