Hach QuikChem 8500 2 Series Installation Manual page 20

Figure 14 Power switches and buttons
1 Dilutor power switch
2 Sampler power button
3 System unit power switch
Do the initial pump test
1. Make sure that the Omnion software is not on at this time. Push the NORMAL RUN button. Make
sure that the pump operates at a normal speed of 35. The NORMAL LED illuminates. If the
display shows a different speed, push the ARROW button to change the setting to 35.
2. Push the MIN button. The MIN LED illuminates. The display shows a speed of 4.
3. Hold down the MAX button until the MAX LED illuminates. The display shows a speed of 999.
The pump goes back to the original speed when the MAX button is released.
4. To stop the pump, push the MANUAL RUN/STOP button. No LEDs illuminate, but the display
shows "35" (the pump speed).
5. Push the MANUAL RUN/STOP button again. The MANUAL LED illuminates. The pump operates
at a normal speed of 35.
6. Push the MANUAL RUN/STOP button to stop the pump. To do a step from above again, set the
pump power to off and then to on. Start with step 1.
7. If there is a failure on a step from above, contact technical support.
20 English
4 Pump power switch
5 Pump start/stop button