8 Maintaining the MMI
To Clean the Multimode Inlet
140 Maintaining Your GC
9 Using a second solvent moistened cotton swab, wipe the bottom of the inlet to remove any
residue. Depending on the amount of use and maximum temperature used, the bottom of
the inlet may still show some oxidation (light brown color). This is normal and will not
affect inlet performance. Repeat steps 3-5 (if necessary) to remove any remaining
deposits.
10 Using clean solvent, rinse the inlet volume several times but never overfill the inlet bore.
Position a container under the column opening in the inlet to catch the used solvent exiting
the bottom of the MMI.
11 Allow the inlet to dry.
12 Install the liner and O-ring.
13 Reinstall the column.
14 Turn on the GC.
15 Perform an inlet Leak & Restriction test and reset the maintenance counters.
16 Exit maintenance mode. Select Maintenance > Instrument > Perform Maintenance >
Maintenance Mode > Finished.
17 Restore the analytical method.
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