5 • Service
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5. Attach the compression fittings and tubing to their appropriate positions on
the valve. Make sure all compression fittings are securely finger-tight.
6. Route the wires from the back of the new valve to the appropriate receptacle
on the Valve Distribution PC board by following along the main group of
valve wires.
7. Plug the connector into the receptacle.
8. Using the wire fasteners, neatly secure the new valve's wires to the main wire
group.
9. Close the door on the left side of the Dionex AutoTrace 280.
10. Reinstall the Dionex AutoTrace 280 rear panel with the six screws previously
removed.
11. Reconnect the power cord and turn on the power.
12. Reconnect the gas supply to the instrument.
13. Place solvent lines in the solvent reservoirs.
14. Run the Prime Solvents diagnostic method (#29).
Complete the Procedure
To ensure proper function of the new switching valve, run the Benchmark Test
diagnostic method (#30) (see
5.17 Running the Benchmark Test Diagnostic Method
Run the Benchmark Test diagnostic method if:
•
You replace any of the following Dionex AutoTrace 280 components: tubing,
syringe, valve, or cartridge holder.
•
The 40 mL elution rack is installed and an elution nozzle requires alignment
(see
•
You notice any indication of trouble with the Dionex AutoTrace 280.
NOTE The Technical Service Representative will run the
Benchmark Test after replacing either the keypad or a
PC board.
