Thermo Scientific Vanquish VH-P10-A-02, Operating Manual

Page: 168 / 238

7 • Maintenance and Service
Page 168 Vanquish Pumps (VH-P10-A-02) Operating Manual
7.9.2 Replacing the Inline Filter or Capillary Mixer
When
•
Impaired filter permeability
•
Damage of inline filter or capillary mixer, which connects the purge
unit to the inline filter
Parts and additional items required
• As applicable
♦
Inline filter (static filter)
♦
Capillary mixer (volume: 25 µL), connecting the purge unit to
filter inlet
•
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.
Follow these steps
1. Unplug the cable of the seal wash detector from the DROP DET port.
2. Unplug the cable of the right pump head from the P-WORK port if
applicable.
3. Remove the right Y-connector (see section 7.6, page 134 ).
4. As applicable, disconnect the capillary mixer on the filter inlet or
remove the capillary mixer on the filter inlet and on the purge unit.
5. On the filter outlet, disconnect the capillary that connects the inline
filter to the autosampler injection valve.
6. Pull the inline filter out of the mounting bracket.