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Electrostatic discharge can damage or cause the failure of semiconductor devices such as
integrated circuits and transistors. The symbol at right may appear on a circuit board or other
electronic assembly to indicate that special handling precautions are needed.
•
A properly grounded conductive wrist strap must be worn whenever an electronics
module or circuit board is handled or touched. A service kit with a wrist strap and static dissipative
mat is available from Siemens (PN15545-110). Equivalent kits are available from both mail order and
local electronic supply companies.
•
Electronic assemblies must be stored in anti-static protective bags when not installed in equipment.
•
In potentially hazardous atmosphere, remove power from equipment before
connecting or disconnecting power, signal, or other circuit, or extracting/inserting
module.
•
Observe all pertinent regulations regarding installation in hazardous area.
•
Ensure all devices are rated for hazardous (classified) locations.
•
Remove power from all wires and terminals and verify that there
are no hazardous voltages before working on equipment.
•
In potentially hazardous atmosphere, remove power from
equipment before connecting or disconnecting power, signal, or
other circuit, or extracting/inserting module.
•
Observe all pertinent regulations regarding installation in
hazardous area.
•
Ensure all devices are rated for hazardous (classified) locations.
vi
Will cause death, serious injury or property damage
Electrical shock hazard
Explosion hazard
Will cause death, serious injury or property damage
CAUTION
DANGER
Explosion hazard
DANGER
SDQLCAI-1
September 2005
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