Inline Filter; Testing The Inline Filter For Permeability - Thermo Scientific Vanquish VH-P10 Operating Manual

7.8

Inline Filter

7.8.1

Testing the Inline Filter for Permeability

When
Additional items required
Follow these steps
Vanquish Pumps (VH-P10) Operating Manual
Follow the sequence of steps for the maintenance procedure that you
want to perform:
• To test the inline filter for permeability, see the next section.
•
To replace the inline filter or the capillary mixer (volume: 25 µL)
connecting the purge unit to the filter inlet, see
page 160.
If you observe pressure pulsation, inconstant pressure, or high
backpressure at the column and pump
•
Water as solvent
•
Tissue
1. Disconnect the capillary on the outlet of the inline filter.
2. To absorb the liquid leaving the filter, place the tissue under the
filter outlet.
3. Apply a flow of 2 mL/min using water.
4. Observe the pump pressure.
5. Depends on the pressure reading:
♦
Pressure is less than 0.8 MPa
Continue with the next step.
♦
Pressure is 0.8 MPa or higher
Replace the inline filter.
6. Reconnect the capillary to the outlet of the inline filter.
7. Test the pump for leakage (see
7 • Maintenance and Service
section 7.8.2,
section 7.11, page 170).
Page 159