Hach-Lange SD900 Refrigerated Sampler, SD900 AWRS Basic User Manual - Manual (Page 22)

6. Stop the pump at the selected volume or rinse location:
• Sample volume: push STOP when the volume that is specified in the main program is
collected.
• Rinse: push STOP when the liquid in the intake tubing gets to the liquid detector.
• Storm volume: push STOP when the volume specified in the stormwater program is collected.
7. Select DONE to go to the next volume calibration or REPEAT to do the calibration again.
8. When all volumes have been calibrated, select DONE.
9. Connect the outlet tubing to the tube fitting on the sampler.
10. Select START to start the sampling program or CANCEL to exit.
Verify the sample volume
To make sure that the sample volume is accurate, take a grab sample. Do not go back into
calibration to check the volume since the volume compensation is reset to zero at the start of a
calibration.
1. Push MANUAL OPERATION.
2. Select GRAB SAMPLE.
3. Put the intake tubing into the sample water.
4. Put the tubing from the outlet side of the pump into a graduated cylinder.
5. If the liquid sensor is enabled, enter the volume to be verified.
6. If the liquid sensor is disabled, enter the volume that is specified in the program.
7. Push ENTER. The pump cycle starts (purge-sample-purge).
8. Compare the volume that was collected in the graduated cylinder to the expected volume. If the
collected volume is not correct, do the volume calibration again.
Maintenance
D A N G E R
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
D A N G E R
Electrocution hazard. Remove power from the instrument before doing maintenance or service
activities.
W A R N I N G
Biohazard exposure. Obey safe handling protocols during contact with sample bottles and sampler
components.
W A R N I N G
Multiple hazards. The technician must make sure that the equipment operates safely and correctly
after maintenance procedures.
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