Hach SD900 - Page 4

Start or stop a program.............................................................................................. 24
View the program status............................................................................................ 24
Manual operation....................................................................................................... 24
Collect a grab sample......................................................................................... 24
Move the distributor arm..................................................................................... 25
Start or stop the pump........................................................................................ 25
View data................................................................................................................... 25
View the sample history...................................................................................... 25
View the event log.............................................................................................. 26
Event log information................................................................................... 26
Erase the event log..................................................................................... 26
View data from SDI-12 devices.......................................................................... 26
Volume calibration..................................................................................................... 27
Calibrate the liquid sensor.................................................................................. 27
Restore the default calibration............................................................................ 27
Calibrate the sample volume with the liquid sensor........................................... 27
Calibrate the sample volume manually............................................................... 28
Verify the sample volume................................................................................... 28
Full bottle shutoff....................................................................................................... 28
Activate the full bottle shutoff.............................................................................. 29
Enable the full bottle shutoff............................................................................... 29
Full bottle shutoff in non-continuous mode......................................................... 29
Full bottle shut off in continuous mode............................................................... 29
Full bottle shutoff and timed bottle mode.................................................... 30
Full bottle shutoff exception conditions............................................................... 30
Advanced sampling................................................................................................ 30
Send output signal at program completion................................................................ 30
Send output signal with sample cycle (special output).............................................. 31
Operate from an external signal (setpoint sample).................................................... 31
Use an SDI-12 device for setpoint sampling ..................................................... 31
Set multiple start and stop times................................................................................ 32
Collect first flush stormwater samples....................................................................... 33
Set variable intervals................................................................................................. 33
Timed bottle sets....................................................................................................... 34
Maintenance............................................................................................................... 34
Clean the instrument.................................................................................................. 35
Replace the desiccant............................................................................................... 35
Pump maintenance.................................................................................................... 36
Replace the pump tubing.................................................................................... 36
Clean the rotor.................................................................................................... 38
Replace the distributor arm tube................................................................................ 39
Fuse replacement...................................................................................................... 39
Troubleshooting....................................................................................................... 39
General troubleshooting............................................................................................ 39
Error messages......................................................................................................... 40
Diagnostic tests......................................................................................................... 42
Replacement parts and accessories............................................................... 42
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