GM User Manual
Contents
1. the scale For built in rechargeable battery version Apply the power adaptor and recharge the scale immediately Fail to do so may cause unrecoverable damages to the rechargeabl battery inside scale TARE INDICATOR An arrow will appear and point at this sign to indicat th tar function is in operation and weight displayed is net weight 7 ZERO INDICATOR An arrow will appear and point at this sign to indicate a zero weight status IN CHARGE INDICATOR BUILT IN RECHARGEABLE BATTERY VERSION This indicator is located at the left hand side of the scale Charging status IS displayed by different colors Red Recharging battery Green Charging completed 4 OPERATIONS 4 1Routine operation a Switch power on The unit will begin a self testing sequence The scale is ready for use when the display zeros The measuring unit for the weighing value will be in kilograms initially b Press the MODE key to select the desired measuring unit kilograms or pounds c Ifthereisacontainerplacedontheplatter press TARE key to subtract the weight of the container previously d Start to weight Optional back lighting facility Press MODE key there are 4 modes to be switch over in sequence kilograms without back lLlight gt pounds without back light gt kilograms with back light gt pounds with back light 4 22. 0peration notes Grounding Ground the instrument properly to protect the instrumentation from power surges This can be done by using a suitable adaptortransformer with a third ground terminal Any method of grounding should comply with local electrical regulations Do not ground the GMto gas pipes water pipes or to telephone plugs Warm up period For best results a minimum 10 minute period of disuse prior to operation is highly recommended Enabling and disabling the Auto shut off mechanism When the scale is turn on the auto shut off mechanism is set at four minutes To disable or to enable again this power saving function follow these instructions a Press the OFF key b Press and hold the TARE key c Press the ON ZERO key the display will show FI d Press TARE key to switch the display to F4 Then press MODE key the display will read 4 OFF or O OFF Press the MODE key to switch between the two modes f Press ON ZERO to reset the scale for normal operation Handling the scale Despite the sturdy appearance of the scale each unit houses sensitive instrumentation which may be damaged by careless handling of the scale Use both hands when transporting the scalewithat least onehandunderthescale This will be routinely required if the charging site for the rechargeab
3. GM SERIES ELECTRONIC WEIGHING SCALE OPERATION MANUAL PLEASE READ THIS MANUAL VERY CAREFULLY BEFORE ATTEMPT TO OPERATE THE SCALE AUGUST 1999 REV 2 Specifications subject to change without prior notice CONTENTS 1 INTRODUCT ION 2s NSTALLAT ON 3 EXPLANAT ONS 4 OPERATIONS 5 CALIBRAT ON 6 CARE AND 7 WARRANTY MAINTENANCE 1 INTRODUCTION Congratulation for choosing an excellent digital weighing scale Reliable and accurate the GM series is ideal for supermarkets grocery stores foodservice shops or retail stores The GM series has been designed to be asy to use durable and portable with an standard sealed type rechargeable battery and matching AC adaptor rear display and back lighting capabilities are available as option 1 1Models amp Specifications Capacity 1 3000 0 005kg lkg lg 1 11000 fencraaige eum Bull capacity o o AC adaptor Option Input AC 110 220V Rear side display Back lighting facil AC DC rechargeable battery 6V Consumption joperated DC 40mA hr 10 50 60Hz Output DC9V 500mA ity evel ng facility RS ee Printer nterfac Operating ove 40 C 32 104 F Tempera
4. le battery is not the same as the operation location Placing a load Always place a commodity gently onthe platter Sudden shocks will damage the weighing sensor irreparably Careful attention to avoiding shocks will extend the life of the sensor For best results do not leave loads on the platter for prolonged periods as this may impair the functioning of the weighing sensor afterwards Handling the plug Disconnect the cord by the pulling on the plugs only never the cord itself Exposure to liquids Only clean the scale in a manner prescribed by the instructions below Should water or another liquid seep into the enclosure unplug the unit and have it checked by your qualified personnel before operating it any further Care should be taken when drinking beverages near the scale and when placing beverage containers on or near the scale Thunderstorms The GM is equipped with a lightning protection circuit which can prevent about 90 of the damage typically caused by lightning The effectiveness of the circuit depends on how well grounding the instrument is However during severe electrical storms it is strongly advisable that the scale be switched off andthat the adaptor be completely disconnected from the local power source Long term storage Charge the battery fully for an uninterrupted eight hours Be sure that there are no load left
5. onthe platter Clean and cover the scal CARE AND MAINTENANCE Do not subject the commodity platter to sudden shocks Clean the cover and commodity platter with a soft damp cloth and mild detergent Do not sue harsh abrasives Do not submerge the scale in water and do not pour splash or spray water directly on Lts Do not use acetone or other volatile solvents for cleaning In order to prolong the battery life please refrain from using any longer before ce recharging when low battery sign appears
6. ose the delicate electronic components NOTE Refer all servicing to qualified personnel at an authorized dealership only Otherwise the warranty may be invalidated Safe use of Power Sources Check that the voltage requirement for the AC adaptor are provided but not exceeded by the local power supply Insert the adaptor plugs securely into a power socket first then the receptacle on the right bottom side of the scale Avoid connecting other equipment to the same socket Secure the adaptor cord such that it will not be stepped on or pulled if possible If an extension cord must be used it should have a equal to or exceeding that of a suitable power source 3 EXPLANATION 3 1Keypads amp Displays 4 o 50 one O 1 OFF KEY Press this key to turn scale off 2 ON ZERO KEY Press this key to turn scale on or set weight to zero when unloaded 3 TARE KEY Press this key to tare off the weight of a container 4 MODE KEY Press this key to switch among metric and avoirdupois weight units with or without backlight optional LO BAT INDICATOR When this indicator appears For dry battery version replace the batteries with new ones or apply the power adaptor immediately CAUTION When the power adaptor is being used take out all the batteries fromthe batterypack Fail to do so may cause battery leak explosion or damages to
7. ture 2 INSTALLATION 2 1Unpacking Unpacking the scale carefully within this package you will find a This manual b The GM scale cC The platter d The adaptor 9V 500mA e The dust cover NOTE Do not dispose of the box or packing materials since they may be useful inthe K future when long range transportation is called for 2 2 Optimal installation requirements For optimal results we recommend that you install the scale at a location that provides for the following A level surface a b Stable and or not subject to vibration Q Not exposed to direct sunlight Q Away from areas containing corrosive gas Dust free f Temperature EOE O g Humidity lt 95 RH Do not install near a humidifier h Away from other electronic equipment to avoid interference If a leveling bubble is included center the bubble with the leveling feet before using the GM scale Follow the precautions outlined below on the safe use of electrical power sources Connect the GM to the local power source and charge the battery completely while the display is switched off Be sure that the scale is safely out of the way while it is charging 2 3Precautions Warning Do not attempt any troubleshooting or maintenance other than that mentioned in this manual Do not open the scal nclosure for any reason and exp
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