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3 • Operation and Maintenance
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friction and wear may gradually result in small liquid leaks around the piston
seal. If unchecked, these leaks can gradually contaminate the piston housing,
causing the pump to operate poorly. If leaks occur, replace the piston seals
(see Section 5.7
).
• Check the end-line filter (P/N 045987) and change if needed. When new, end-
line filters are pure white. If the system is in continuous operation, change the
end-line filter weekly, or whenever it becomes discolored. Replace the filter
more often if bacterial buildup is visible or if the eluent does not contain
solvent.
NOTE It is especially important to regularly replace end-line
filters when using aqueous eluents, which may
contaminate the filter with bacteria or algae. The
bacterial buildup may not be visible.
Every Six Months
• Calibrate the cell (see Section 5.1.3).
• Calibrate the vacuum degas assembly (see Section 5.1.5).
• Replace the pump piston rinse seals and piston seals (see Section 5.7).
Yearly
• Dionex recommends performing preventive maintenance annually, as well as
before scheduled Performance Qualification tests. An ICS-2100 Preventive
Maintenance Kit (P/N 057954) is available for this purpose.
• Rebuild the auxiliary valve, if installed (see Section 5.4).
• If an AS Autosampler is installed, perform the preventive maintenance
procedure. The AS Preventive Maintenance Kit (P/N 060581) is available for
this purpose.
• If an AS-DV Autosampler is installed, replace the tip and tubing. The AS-DV
Preventive Maintenance Kit (P/N 055647) contains all of the components
required to replace the sampling tip and the tubing between the tip and the
injection valve. Instructions are included with the kit.