39
5.2.3 Post-replacement verification
Refer to Section 3.1.3 and perform the pressure test. Verify that there are no leaks
from the line filter (See Fig. 2.2). If the test reveals a leak, see Section 2.4.4, which
describes procedures for dealing with leaks from the line filter.
5.3 Inlet filter replacement
5.3.1 How to check for inlet filter clogs
Use a siphon to observe the flow of solvent in the inlet tube. If solvent flows only
intermittently, the inlet filter is clogged and must be replaced (See Fig. 5.14).
5.3.2 Inlet filter replacement procedure
Refer to Fig. 5.14 and replace the inlet filter. The inlet filter assembly consists of a 10
µm sintered stainless steel mesh filter and an outer Teflon gasket.
Normal Clogged
80 - 100cm
Figure 5.14 How to Check for Inlet Filter Clogs