Thermo Scientific thermoscientific Vanquish Pumps C, Operating Manual

Page: 169 / 296

7 • Maintenance and Service
Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual Page 169
5. Depends on the pressure reading:
Pressure Reading Action
Pressure is less than 0.8 MPa Continue with the next step.
Pressure is 0.8 MPa or higher Replace the static mixer.
6. Reconnect the capillary to the outlet of the static mixer.
7. Test the pump for leakage. See Testing the Pump for Leakage
(General Test) ( } page 179) .
7.8.2 Replacing the Static Mixer or Capillary Mixer
When
• Impaired permeability of the static mixer
• Damage of static mixer
• Leaky capillary mixer
Parts, tools and additional items required
• As applicable
¨
Static mixer
¨
Capillary mixer
• Depending on the capillary connection:
¨
Viper capillary: Viper knurl (usually present on the capillary)
¨
Conventional capillary (non-Viper): Open-end wrench, size 1/4"
• Solvent suitable for purging
Preparations
1. To flush out harmful substances, purge the pump with an
appropriate solvent.
2. To remove harmful substances from the components in the flow
path after the purge unit, have the pump deliver for a short time
with the solvent that was used for purging.
3. Turn off the pump flow and wait until the system pressure is down
to zero.