Thermo Scientific Dionex ICS-2000, Operator'S Manual

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ICS-2000 Ion Chromatography System
3-22
Doc. 031857-03 4/06
Weekly
•
Once a week, check fluid lines for crimping or discoloration. Relocate any
pinched lines. Replace damaged lines.
•
Check the junctions between the pump heads and the pump casting for
evidence of liquid leaks. If the piston seal wash tubing is not connected, check
the drain tubes at the rear of the pump heads for evidence of moisture. Normal
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 5.6 ).
•
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 5.6 ).
Yearly
•
Rebuild the injection valve (see Section 5.4 ).
•
Replace the AS40 Automated Sampler tip and tubing. The AS40/ASM
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.
•
Perform the AS or AS50 (USB) preventive maintenance procedure. The AS
or AS50 (USB) Maintenance Kit (P/N 060581) contains all of the required
components and instructions for performing the procedure.