Dionex ICS-900, Руководство оператора

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4 • Troubleshooting
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Insufficient flush between samples
Flush the sample loop with at least 10 loop volumes of deionized water or
sample between sample injections.
•
Incorrect or contaminated standards
Remake standards.
•
Incorrect or contaminated eluent
Remake the eluent (see Section 3.4 ).
•
Malfunctioning injection valve
Contact Dionex for assistance.
4.9 Nonreproducible Peak Height or Retention Time
•
Column overloading
Dilute the sample (see Section 3.10.3 ).
•
Liquid leaks
Locate and eliminate the leaks (see Section 4.2 ).
•
Incomplete or imprecise filling of the sample loop
1. Fill the sample loop until excess sample exits the waste line.
2. Inspect the 1 cc syringe (P/N 016388) and replace if damaged.
•
Pump not primed properly
Prime the pump (see Section 3.6 ).
4.10 Abnormal Retention Time or Selectivity
•
Contaminated or incorrect eluent
Remake the eluent, using concentrated eluent and ASTM Type I (18-
megohm) filtered and deionized water (see
Section 3.4 ).
•
Contaminated or degraded sample
Take appropriate precautions when preparing and storing samples to prevent
contamination and degradation (see
Section 3.10 ).