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.
How to fix 'Low Main Battery' on Hach 900 MAX?
If the power supply voltage is less than 11 V dc, the 'Low Main Battery' error appears. To solve this, change the batteries.
What to do if Hach 900 MAX Laboratory Equipment shows 'Slate Memory Full'?
If your unit is in slate memory mode and can't log any more data because there is no more slate memory, download the data and restart the program. Alternatively, download the data and then change the memory mode.
What causes 'Low Slate Memory' on Hach 900 MAX Laboratory Equipment and how to fix it?
When free slate memory is less than 20%, the 'Low Slate Memory' error appears, indicating that RAM memory is almost full and will stop recording soon. To resolve this, you can download data from the unit, halt and restart the program. Another option is to download the data, halt the program, and change the data to wrap mode.
How to resolve 'Incorrect password! Access denied' on Hach 900 MAX Laboratory Equipment?
If you see 'Incorrect password! Access denied,' it means the wrong password was entered. The correct password is 9000. Enter the correct password to proceed.
What causes 'Jammed Distributor' error in Hach 900 MAX Laboratory Equipment and how to fix it?
If the distributor arm has jammed on an obstruction, the 'Jammed Distributor' error will appear. Remove the obstruction to resolve this issue.
What to do if Hach 900 MAX Laboratory Equipment shows 'Memory Battery' error?
If the internal memory battery voltage is too low, the 'Memory Battery' error appears. To fix this, change the memory batteries.
What does 'pH calibration failed—gain and/or offset out of range. Try again' mean on Hach Laboratory Equipment and how to fix it?
The message 'pH calibration failed—gain and/or offset out of range. Try again' indicates that the pH calibration calculations yielded an invalid number. Try using fresh buffers or a new probe.
What does 'Modem Failure' mean on Hach Laboratory Equipment and how can I resolve it?
A 'Modem Failure' indicates that the device is unable to initialize the modem PCB. If the modem is enabled, the problem may be on the modem board, and the board may need replacement.
What does 'U-Sonic Echo Loss' mean on Hach 900 MAX and how can I resolve it?
The 'U-Sonic Echo Loss' error means that the echo has been temporarily deflected by a change in site conditions, such as floating debris, foam in the channel, or wind. Check for excessive foam and remove any debris or build-up.
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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