Riken Keiki GD-3EC, Technical Manual

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4. Installation 4-6 Connecting the grounding terminal
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4-6 Connecting the grounding terminal
WARNING

Be sure to ground the product before turning on the power.

To ensure stable operation and safety, be sure to ground the product. Never connect grounding wires to
gas pipes.

Make sure the grounding is Class D equivalent (grounding resistance not exceeding 100 Ω).

Use cable lugs on the grounding wire to ensure safe grounding with the cable free of slack and twisting.

Do not ground to the same locations as high frequency or high voltage devices or nearby.
Connect the grounding bolt to the local grounding terminal.
NOTE
 The grounding bolt is marked with the symbol.
<Main unit (SD-3)> <Main unit (SD-3SC)> <Remote sensor head (GD-3)>
Grounding bolt (M4) Grounding bolt (M4)
Grounding bolt (M4)