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EN-27
Adventurer Pro Grain Test Scale
Symptom
Possible Cause
Remedy
Scale will not turn on
• AC power not connected
• Connect AC adapter
Scale does not display
• Improper calibration
• Perform
accurately
• Unstable environment
calibration
• Move scale to a
suitable location
Cannot calibrate the scale
• Calibration menu locked
• Turn Calibration menu
lock off
• LFT set to on
• Turn LFT off
• Unstable weight reading
• Eliminate vibration and
drafts.
Cannot change Menu settings
• Submenu locked
• Unlock submenu
• LFT set to on
• Turn LFT off
Error 7.0
• Unstable weight reading
• Eliminate vibration and
when defining the
drafts.
reference weight.
Error 8.1
• Weight reading exceeds
• Clear pan.
Power On Zero limit.
Error 8.2
• Weight reading below
• Put pan on scale.
Power On Zero limit.
Error 8.3
• Weight reading exceeds
• Clear pan.
overload limit.
Error 8.4
• Weight reading below
• Put pan on
underload limit.
scale.
Error 9.0
• Internal fault.
• Return scale for service.
4. MAINTENANCE
4.1 Calibration
Periodically verify calibration by placing an accurate weight on the scale and if calibration is
required, refer to section 3.8.1.
4.2 Cleaning
If cleaning is required, use a soft cloth dampened with water and a mild detergent. Do not allow
liquids to enter the scale. Do not use harsh chemicals to clean the scale, as the finish may be
damaged.
4.3 Troubleshooting
The following table lists common problems, possible causes and remedies. If the problem persists,
contact Ohaus or your authorized Ohaus dealer.
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