What does 'Sampling halted during rinse—no liquid detected' mean for Hach Laboratory Equipment and what to do?
The message 'Sampling halted during rinse—no liquid detected' means that a sample attempt was stopped because no liquid was detected during rinse. Check the sampling setup.
What does 'Sampling halted due to fluid presence after rinse purge' mean for Hach Laboratory Equipment and what to do?
The message 'Sampling halted due to fluid presence after rinse purge' means that a sample attempt was stopped because fluid was detected after rinse purge. Investigate the tubing setup.
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.
Why does Hach Laboratory Equipment say 'Logged data will be lost if you choose to continue?'
This message appears when making a program change while a program is halted. Choose 'No' to avoid losing logged data.
Why does Hach Laboratory Equipment display 'Error: Distributor arm is not functioning properly!'?
The error 'Distributor arm is not functioning properly!' indicates that the distributor test failed. This could be due to an arm obstruction, a cable that is not properly installed, or a defect in the distributor assembly. Check for obstructions, ensure the cable is correctly installed, and inspect the distributor assembly for defects.
Why does Hach Laboratory Equipment display 'The program cannot start: timed rinse required'?
This message appears if the liquid sensor is disabled and timed calibration has not been performed for the rinse cycle. Enable the liquid sensor and perform timed calibration.
Why does Hach 900 MAX Laboratory Equipment display 'The program cannot start: volume calibration required'?
This message appears if the liquid sensor is disabled and timed calibration has not been performed for the main sample, the first flush, or the upset sample volume. Enable the liquid sensor and perform volume calibration.
What to do if Hach Laboratory Equipment displays 'The program cannot start: the primary device is not properly set up'?
This message appears if the operator goes partially through the flow meter setup screens but stops before entering all necessary parameters. Complete all parameters in the flow meter setup.
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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