7
4. PRECAUTIONS
4.1. Installing the scale
DANGER
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Ground the scale so that the user will not be subject to an electric shock.
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The base frame is connected to the power GND (EXC-) inside the load
cell. Be sure to earth ground the AC power cable. When the AC electrical
outlet has no ground terminal, use the ground terminal (screw with the
ground symbol) on the scale.
Location of the ground terminal
Models with a display pole: lower part of the display pole
Models with no display pole: bottom of the weighing pan
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Do not handle the AC power cable with wet hands.
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The AC plug is not water-resistant. Use an electrical outlet located at a
place where the plug will not get wet.
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Even when
the optional sealed lead acid (SLA) battery (HC-02i) is used,
be sure to prevent the AC plug from getting wet.
•
Do not handle the cables carelessly.
•
Do not install the scale where flammable or corrosive gas is present.
Consider the following conditions to get the most from your scale.
Install the scale where the temperature and relative humidity are stable, with no drafts
or vibration.
Install the scale on a solid and level surface.
Do not install the scale in direct sunlight.
Do not install the scale near heaters or air conditioners.
Do not install the scale near equipment which produces magnetic fields.
Do not install the scale in a place where it is possible to be charged with static
electricity, or where the relative humidity is lower than 45% RH. Insulators such as
plastic are often charged with static electricity.
Use a stable power source.
Please peel off the protecitive film (sheet) before using.
Calibrate the scale before use or after having moved it to another location.
In addition, calibrate it periodically to maintain the accuracy.
(Refer to “12. CALIBRATION”).
4.2. Operating the scale
Periodically ensure that the scale weighs correctly.
Calibrate the scale periodically to maintain the weighing accuracy (Refer to “12.
CALIBRATION”).
Do not place anything on the pan that is beyond the weighing capacity.
Do not apply a shock load to the scale.
Touch the keys only with a finger.
Confirm zero before each weighing to prevent possible error.