Maintenance7
98
LDCDS−ELx7xx DE/EN 4.0
7 Maintenance
Stop!
Short circuit and static discharge
The device contains components which are endangered in the case of short
circuit or static discharge.
Possible consequences:
ƒ The device or parts of it are destroyed.
Protective measures:
ƒ When working on the device, always switch off the voltage supply (mains
and a possibly mounted UPS). This particularly applies to the following:
– Before opening the housing.
– Before connecting / removing connectors.
– Before plugging in / plugging out modules.
ƒ All persons handling printed circuit boards have to take account of ESD
measures.
ƒ Contacts of connectors may not be touched.
ƒ Printed circuit boards may be touched only at places free from electrical
contacts and may be placed only on appropriate materials (e.g. on ESD
packaging or conductive foam material).
ƒ Printed circuit boards may only be transported and stored in ESD packaging.
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