Thermo Scientific Dionex, Руководство оператора

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10 • Service
This chapter describes Dionex Integral Process Analytical Systems service and
repair procedures that users can perform. Procedures not included here, including
electronics-related repair procedures, must be performed by Thermo Fisher
Scientific personnel. For assistance, contact Technical Support for Dionex
products:
•
In the U.S. and Canada, call 1-800-532-4752 and select option 2 .
•
Outside the U.S. and Canada, call the nearest Thermo Fisher Scientific office.
Before replacing any part, review the troubleshooting information in Chapter 9 to
correctly identify the cause of the problem.
10.1 Eliminating a Fluid System Restriction
A restriction in the fluid system (for example, crimped tubing) can cause
excessive system backpressure. This, in turn, may cause leaks or irreparable
damage to system components.
1. Begin pumping mobile phase through the system (including the columns) at
the flow rate typically used.
2. Refer to the appropriate flow schematic (see Figure 3-11 for the SP1; see
Figure 3-14 for the SP2). Work backward through the system, beginning at
the cell exit. One at a time, loosen each fitting and check the pressure. The
connection at which the pressure drops indicates the point of restriction.
3. Remove the restriction, either by flushing or by replacing the section of
tubing.
Substituting non-Dionex/Thermo Fisher Scientific parts may impair
the performance of the Dionex Integral system, thereby voiding the
product warranty. Refer to the warranty statement in the Dionex Terms
and Conditions for more information.