Toshiba GF630 Instruction Manual

Also see for GF630: Instruction manual Manual

4.4 GroundingCAUTION Do not wire cables and replace partswhen power is supplied. Do not work on piping and wiring with wet hands.DON’TWiring work and replacingparts in the power-on statemay cause electric shock. DON’TWet hands may result in electric shock.(1) Grounding of the GF630/LF620 typeGround as shown in Figure 4.12. Make the grounding wire as short as possible. Use groundingwire material of IV wire 5.5mm2 or more. Do not share a grounding wire with otherinstruments where grounding current may flow. (An independent grounding is preferable.)Figure 4.12 Grounding the GF630/LF620 TypePlease connect the grounding cablesof detector to piping using the M5 screwshown as Figure4.13 as needed.(In the case that there are no threaded holewith piping, please tap the threaded hole.)It is necessary to connect the ground cablesurely electrically.grounding resistance100ohm or less•In the case that the piping is conductive material,connect the grounding wires to the both ends of thepiping flange. (grounding resistance or less).• In the case that the piping is non-conductive material,perform grounding (grounding resistance or less).Conductive material pipeExample: Metal, etc.Piping of non-conductive materialExample: Resin or metal piping whoseinside is resin-lined, etc.Grounding wiregrounding ringGrounding terminalgrounding resistance100ohm or lessFigure4.13 Grounding cable connection(Detail of part A)M5 Grounding cable of detectorIntegral