GE Analytical Instruments ©2010 161 of 226 DLM 74001-04 Rev. A
Chapter 8: Troubleshooting
2. Begin by testing the flow of water on the DI water side of the fluidics module. Remove the Masterflex
tubing from the stainless steel tubing connected to the cell. If water is flowing from the stainless steel
tubing, proceed to Step 5. If there is no water flowing from the tubing, proceed to the next step.
3. On the Analyzer’s touch screen, press the Menu button, then select Maintenance
Advanced
Diagnostics.
4. Press the Test Pumps button, and then press the DI Pump button. Cycle the pump on and off a few
times, by pressing the On and Off buttons, finally leaving it set to On. If there is no flow, contact GE
Analytical instruments for further assistance. You may need to replace the measurement module.
5. Replace the Masterflex tubing, so it connects to the stainless steel tubing.
6. Remove the Masterflex tubing from the front solenoid valve and check to see if water is flowing through
the restrictor tubing (see Figure 40).
• If there is water flowing from the restrictor tubing, reconnect the tubing to the solenoid valve. If there
is no water flowing through the restrictor tubing, you may need to replace the restrictor tubing
(available in the 500 RL Tubing Set from GE Analytical Instruments).
Figure 40: Disconnecting the Tubing from the Front Solenoid Valve
7. On the Test Pumps screen, press the Off button.
8. Continue by testing the flow of water on the sample water side of the fluidics module. Inside the
Analyzer, swap the inlet and outlet tubing connections (see Figure 41). Connect the inlet fitting to the
waste port and the waste fitting to the inlet port. Loosen each of the Valco fittings and connect them to
the opposite port by tightening 1/4 turn past finger-tight.
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