Grounding - Toshiba LF664 Instruction Manual

4.4 Grounding

Do not wire cables and replace parts
when power is supplied.
Wiring work and replacing
parts in the power-on state
may cause electric shock.
DON'T
(1) Grounding of the LF664/LF620F type
Ground as shown in Figure 4.11. Make the grounding wire as short as possible. Use
grounding wire material of IV wire 5.5mm
wire with other instruments where grounding current may flow. (An independent
grounding is preferable.)
LF620F
Grounding terminal
• If the piping material is conductive, connect
the grounding wires to the both ends of the
piping flange.
CAUTION
Conductive material pipe
Example: Metal, etc.
grounding resistance
100Ω or less
Figure 4.7 Grounding the LF664/LF620F Type
—
Do not work on piping and wiring with wet
hands.
Wet hands may result in electric
shock.
DON'T
2
or more. Do not share a grounding
Grounding wire
• If the piping material is non-conductive, perform
grounding (grounding resistance 100Ω or less).
—
22
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Piping of non-conductive material
Example: Resin or metal piping whose
inside is resin-lined, etc.