Hach PHOSPHAX sc LR User Manual page 54

Maintenance
52
• Blind plug, LZY193 (plugging set is LZY007)
• Beaker, 100 mL
• Fittings 3.2 mm, LZY111
1. Stop the sample stream. For use with Filtrax, refer to the documentation supplied.
2. Put the instrument in service mode. Push Menu.
3. Select SENSOR SETUP > PHOSPHAX sc LR > DIAG/TEST > MAINTENANCE >
SELECT PROCESS then push SERVICE MODE.
4. Loosen the T-fitting on the overflow vessel. Refer to
5. Hold the beaker under the tube.
6. Start the sample stream and exit service mode.
The instrument starts moves the sample into the beaker.
7. Collect approximately 100 mL of sample in the beaker.
8. Stop the sample stream and put the instrument again in service mode to stop sample
movement. Refer to 3.
9. Do the laboratory test. Refer to the documentation supplied with the test.
Note: Do a minimum of two laboratory measurements to compare the results.
10. On the overflow vessel, unscrew the fitting of the sample tube that connects the
overflow vessel and the valve block.
11. Screw the blind plug in the thread of the overflow vessel and put the sample tube in
the beaker. Refer to
Note: To have stable measurement values, put the beaker in the collecting tray and close the
door of the analyzer.
12. Install the T-fitting on the overflow vessel. Refer to
reverse order.
13. The sample stream can be started for other instruments in the line.
14. Exit service mode. Take two measurements.
15. Select SENSOR SETUP > PHOSPHAX sc LR > DIAG/TEST > MAINTENANCE >
SELECT PROCESS > SERVICE MODE and push MEASURING.
The instrument makes two measurements. The measurements take about 20 minutes
to complete.
16. When the measurements are complete, stop the sample stream and put the
instrument to service mode.
17. Install the tube in the overflow vessel again. Make sure to push the fitting into the
overflow vessel as far as possible, then carefully screw the fitting into the overflow
vessel.
Compare the two both measurements and set the factor and offset value. Refer to
Configure the calibration settings
Figure 20 on page 51.
on page 40.
Figure 21.
Figure 21 and do the steps in