Toshiba LF414 - Manual (Page 29)

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4.4 Grounding
CAUTION
„ Do not wire cables and replace parts
when power is supplied.
„ Do not work on piping and wiring with wet hands.
DON’T
Wiring work and replacing
parts in the power-on state
may cause electric shock.
DON’T
Wet hands may result in electric shock.
(1) Grounding of the LF414/LF600F, LF414/LF610F type
Ground as shown in Figure 4.10. Make the grounding wire as short as possible. Use grounding
wire material of IV wire 5.5mm
2 or more. Do not share a grounding wire with other
instruments where grounding current may flow. (An independent grounding is preferable.)
Figure 4.10 Grounding the LF414/LF600F, LF414/LF610F Type
Grounding terminal
• If the piping material is conductive, connect
the grounding wires to the both ends of the
piping flange.
• If the piping material is non-conductive, perform
grounding (grounding resistance 100Ω or less).
Conductive material pipe
Example: Metal, etc.
Piping of non-conductive material
Example: Resin or metal piping whose
inside is resin-lined, etc.
Integral
Grounding wire
grounding resistance
100Ω or less