Hach-Lange SD900 Refrigerated Sampler, SD900 AWRS User Manual - Manual (Page 32)

Table 3 Configuration and controller checks (continued)
Configuration Check criteria
Storm water enabled with multiple first flush bottles and
distribution set to samples per bottle The number of FF samples per bottle multiplied by the
FF sample volume is less than the bottle volume.
Timed bottle (TB) set is enabled and configured to run
in non-continuous mode The number of samples per TB multiplied by the
sample volume is less than the bottle volume.
If any of the checks fail, the display shows an INVALID PROGRAM message and the program will
not run. Navigate to MENU>MODIFY ALL to correct the program, or disable the full bottle shutoff.
If the results of the necessary checks are satisfactory or the full bottle shutoff is disabled, the
program will run.
Full bottle shut off in continuous mode
In continuous mode, sample collection is monitored while the program runs. The controller does not
do any checks before the program is started.
If the bottle capacity is one sample volume less than the maximum capacity, the sample collection is
halted. An event is recorded in the event log with a date and time stamp. The display shows a
HALTED BOTTLE FULL? message and the program enters the PROGRAM HALT state.
Push a key on the controller to clear the warning message. The program stays in the halted state to
let bottles be emptied and replaced as necessary.
Push RUN/HALT PROGRAM to start the program again. Select from four options:
• RESUME—Continue the program from where it halted
• START OVER—Start the program from the beginning
• END PROGRAM—Stop the program
• CANCEL—Stay in the halted state
If RESUME is selected, the display shows a BOTTLES EMPTIED? message. Select YES or NO:
• YES—The controller starts to monitor the sample collection again.
Note: The controller acts as if the bottles are now empty even if they are not.
• NO—The program does not resume sample collection but stays in the HALTED state if the bottle
full condition was detected earlier.
Full bottle shutoff and timed bottle mode
In order to use the full bottle shutoff when timed bottle is enabled, the timed bottle run mode must be
set to END AFTER LAST.
If an attempt is made to run timed bottle in continuous mode, a NOT ALLOWED error screen shows
TB CONTINUOUS NOT POSSIBLE WITH FULL BTL.
If this error occurs, push ENTER to acknowledge the message. In the TB MODE screen that shows,
select END AFTER LAST.
If it is necessary to run timed bottle in continuous mode, disable the full bottle shutoff.
Full bottle shutoff exception conditions
Full bottle shutoff does not prevent bottles from being over or under filled when certain exception
conditions occur. Such conditions can occur if:
• The liquid sensor is disabled and the manual calibration is incorrect.
• The liquid sensor is enabled but does not operate correctly or has bad calibration.
• Bottles are emptied but the program is not halted (controller does not know bottles are empty and
activates full bottle shut off too soon).
• The program is halted but the user gives incorrect feedback:
• Bottles are empty but the user selects NO in the BOTTLES EMPTIED? screen.
• Bottles are not empty but the user selects YES in the BOTTLES EMPTIED? screen.
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