Thermo Scientific Dionex AS-DV, Operator'S Manual

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5 • Service
Doc. 065259-05 10/12
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5.5 Rebuilding a High-Pressure Valve
Thermo Scientific recommends rebuilding the optional high-pressure valve
annually or if problems occur and other troubleshooting steps do not resolve the
problem. The Injection Valve Rebuild Kit (6-port valve, P/N 075973; 10-port
valve, P/N 079054) contains all required parts.
NOTE Substitution of non-Dionex/Thermo Scientific parts may
impair valve performance and void the product
warranty.
NOTE If you prefer, you can replace the high-pressure valve
“pod” (see Section 5.6 ) instead of rebuilding the valve.
The following tool is needed to complete this procedure: 3-mm Allen wrench.
1. Turn off the Dionex AS-DVpower.
2. Raise the top cover.
3. Remove the Dionex AS-DVfront cover by gripping the indentations at each
side and pulling the cover straight off toward you.
4. Disconnect each liquid line connected to the valve.
The Dionex AS-DV power must be turned off before you rebuild a
valve. If the power is on when you disconnect or connect the valve
cable, the Dionex AS-DV will be damaged.