Hach-Lange SD900 Refrigerated Sampler, SD900 AWRS User Manual - Manual (Page 31)

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.
Full bottle shutoff
Programs can sometimes cause bottles to overflow. If the full bottle shutoff option is activated and
enabled, a program stops when one or more bottles is close to an overflow condition. The program
will not run again until the full bottle condition is reset.
Activate the full bottle shutoff
The full bottle shutoff option must be activated before it can be enabled. After activation, the option
remains available until the controller firmware is upgraded. After a firmware upgrade, the full bottle
option must be activated again.
1. If necessary, push any key on the controller to take it out of sleep mode.
2. Push and hold the MENU key for more than 30 seconds. The display shows FB SHUTOFF
AVAILABLE.
Enable the full bottle shutoff
1. Push MENU.
2. Select PROGRAM SETUP>MODIFY SELECTED>BOTTLE QUANTITY>FULL BTL SHUTOFF.
3. In the list of options, select ENABLE.
To disable full bottle shutoff, navigate as above and select DISABLE.
Full bottle shutoff in non-continuous mode
In non-continuous mode, sample collection is not monitored while the program runs. The controller
tries to find possible overflow conditions before the program starts.
Table 3 gives the specified check
criteria for different configurations.
Table 3 Configuration and controller checks
Configuration Check criteria
Multiple composite sampling (deliver samples to all
bottles) The number of samples multiplied by the sample
volume is less than the bottle volume.
Samples per bottle distribution The number of samples per bottle multiplied by the
sample volume is less than the bottle volume.
Storm water enabled The first flush (FF) sample volume is less than the
bottle volume.
Storm water enabled with first flush bottles set to 1 The number of FF samples to collect multiplied by the
FF sample volume is less than the bottle volume.
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