Why does Hach Laboratory Equipment display 'Tried to enable Storm Water with a single bottle'?
This message appears because Stormwater mode is not allowed when the sampler is configured with only one bottle. Use multiple bottles to enable Stormwater mode.
What does 'Sensor output voltage too low—cannot calibrate' mean on Hach 900 MAX and how to fix it?
The message 'Sensor output voltage too low—cannot calibrate' indicates that the D.O. calibration yielded an invalid result. Try another probe.
What does 'Calibration requires a minimum submersion of six inches' mean on Hach 900 MAX?
This message relates to level sensor calibration of the bubbler or submerged sensor. Ensure a minimum submersion of six inches during calibration.
What does 'Pumping took too long, please try again' mean on Hach 900 MAX and how to fix it?
This message appears when the maximum time for timed calibration of a sample volume (or rinse) is exceeded (the maximum is roughly 10.5 minutes). Ensure pumping time is within the limit.
What does 'The program setup needs flow to be logged at an interval < or = the flow time limit' mean on Hach 900 MAX and how to resolve it?
This message indicates that an alarm, setpoint, or stormwater function uses flow rate-of-change as a trip point, and the logging interval is not adequate. Adjust the logging interval to meet the requirements.
Why does Hach 900 MAX Laboratory Equipment display 'Upset sampling is not allowed when the sampler is configured with one bottle'?
This message appears when you try to enable Upset Sampling with a single bottle. Use multiple bottles to enable Upset Sampling.
Why does Hach 900 MAX display 'No Change in Level Readings or Inaccurate Level Readings'?
The message 'No Change in Level Readings or Inaccurate Level Readings' is displayed because of calibration issues. Re-calibrate the unit.
What does 'Function disabled while a program is running. Use RUN/STOP key' mean on Hach 900 MAX Laboratory Equipment?
The message 'Function disabled while a program is running. Use RUN/STOP key' means you tried to use manual menu functions or the distributor test while the program is running. Use the RUN/STOP key to stop the program before retrying.
What does 'Distributor movement halted due to key press' mean on Hach Laboratory Equipment and what to do?
This message means a key was pressed during the distributor test (diagnostics) or distributor movement from the manual menu screen. Do not press keys during distributor movement.
Why does Hach 900 MAX show 'U-Sonic Failure' and how to fix it?
A 'U-Sonic Failure' message indicates that the transducer is either not plugged in, the cable is damaged, or the transducer thermal sensor is damaged. Verify that the transducer is correctly plugged in and inspect the sensor for any signs of damage.
General| Brand | Hach |
|---|---|
| Model | 900 MAX |
| Category | Laboratory Equipment |
| Language | English |
Explains hazard signal words (Danger, Caution, Note) for understanding warnings.
Advises reading and observing all labels attached to the instrument for safety.
States the instrument is not approved for hazardous locations as defined by the National Electrical Code.
Covers dimensions, cabinet, thermal system, power, and control panel.
Details sampling modes, intervals, communication, and data logging.
Lists specifications for optional probes (pH, DO, ORP, Conductivity) and sensors.
Guides on unpacking and choosing an optimal installation site.
Guides on initial power-up, main menu, and basic programming steps.
Details setup steps for bottles, intake tubing, program lock, and sample collection.
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