Dionex AS-HV, Operator'S Manual

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Doc. 065125-01 10/06
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5 • Service
This chapter describes routine service procedures that the user can perform for the
AS-HV Autosampler and the syringe pump. All procedures for the AS-HV and
the syringe pump that are not described here must be performed by Dionex
personnel. (For service procedures for other sample loading pumps, refer to the
respective product manual.)
To contact Dionex in the U.S., call 1-800-346-6390 and select the Technical
Support option. Outside the U.S., call the nearest Dionex office.
NOTE All repairs of the AS-HV electronics must be performed
by Dionex personnel.
Before replacing any part, refer to the troubleshooting information in Section 4 to
isolate the cause of the problem.
5.1 Cleaning the Syringe Pump
To remove precipitates (salts, etc.) and eliminate bacterial growth, clean the fluid
path of the syringe pump monthly.
1. Make a solution of 10% methanol (MeOH) by adding one part of MeOH to
nine parts of deionized water. Dionex recommends using ASTM Type I (or
better) filtered, deionized water.
2. Prime the pump with the 10% MeOH and allow the solution to remain in the
pump, with the syringe fully lowered, for 30 minutes.
3. After the 30-minute period, remove the reagent tubing from the 10% MeOH
solution and cycle all the fluid from the syringe and tubing into a waste
container.
4. Prime the pump a minimum of 10 cycles with distilled or deionized water.
Substituting non-Dionex parts may impair the performance of the AS-
HV, thereby voiding the product warranty. Refer to the warranty
statement in the Dionex Terms and Conditions for more information.