TABLE OF CONTENTS Safety Precautions Preparations and Set Up Features Specifications Power Supply Displays Display and Key Descriptions Operating Instructions 7-98 Calibration 9-10 Scale Parameter Settings Troubleshooting Contact Us...
SAFETY PRECAUTIONS For safe operation of the weighing scale, please follow these instructions: ● Calibration inspection and maintenance of the scale are prohibited by non-professional staff ● Please ensure that the scale hangs securely ● The scale is a piece of static sensitive equipment; Please cut off power during electrical connections ●...
FEATURES ● LED or LCD display option ● Multiple weighing units: kg/lb ● Gross/Tare/Hold/Zero ● Economical, light weight and hand held general purpose crane scale ● Features and easy to red backlit LCD or ultra bright LED display ● Powered using a rechargeable batter pack (up to 80 hours) and AC adapter ●...
Please use only the AC adapter provided to prevent damage to your scale. Battery OP-925 comes with a rechargeable battery, please charge the internal battery fully be- fore first time use for 10-12 hours to prevent low voltage resulted from left leakage of battery.
DISPLAY AND KEY DESCRIPTION ON/OFF Powers the Scale On or Off if held for 2 seconds ZERO Zero’s the scale TARE 1. Resets the scale to zero when there is something on the scale 2. Clears the tare to see the gross weight HOLD Holds the weight Enters 2nd Mode...
OPERATING INSTRUCTIONS Power On/Off ● Turn on the power by pressing the power button for 2 seconds. Once on, the scale will flash the voltage and then begin to auto-check and count down from 0-9 sequentially before entering the weighing mode Note: Anything on the scale before powering on will automatically be tared out.
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Hold Manual Hold: Grabs the current weight and holds it so it will not change/fluctuate. ● While weighing, press the Hold key and the scale will hold the current weight on the screen until HOLD is pressed again Accumulation ● The accumulation function is used to add multiple weights and total them together ●...
OP-925 CALIBRATION PROCEDURE Power on the crane scale Press 2nd key and the display should show [2nd ] Press 2nd key again and the display should show [PASS-] then [00000] Use the arrow keys to enter the password “07650” Press the HOLD...
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OP-925 GRAVITATIONAL ACCELERATION FACTOR CORRECTION During calibration, when the display shows [CALon], press TARE to enter into gravitational acceleration factor correction It defaults to 1.0000 and controls the relationship to the weight in direct proportion Use the arrow keys to modify the parameters then press HOLD...
SCALE PARAMETER SETTINGS To enter calibration/parameter settings, follow the procedure below: Power on the crane scale HOLD Press the key and the key at the same time the display should show [2nd] HOLD key to confirm and enter into the next step Press the Use the arrow keys to change the parameter settings...
TROUBLESHOOTING Checking the Battery Life Press 2nd then press F1, the display should show [U 6.##] battery power level for 2 seconds and then go back to weighing mode Internal Code Checking Press 2nd and the display will show [2nd], then press F3 to display the internal code, only used in maintenance and debugging.
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