Safety Practices and Precautions, Continued

Correct Operating Voltage

DANGER Arising from Loss of Ground

Safe Equipment

Use the Proper Fuse

Safety Guidelines

Before switching on the power, check that the operating voltage listed on the equipment nameplate agrees with the available line voltage.

Any interruption of the grounding conductor inside or outside the equip- ment or loose connection of the grounding conductor can result in a dan- gerous unit. Intentional interruption of the grounding conductor is not permitted.

If it is determined that the equipment cannot be operated safely, it should be taken out of operation and secured against unintentional usage.

To avoid fire hazard, use only a fuse of the correct type, voltage rating and current rating as specified in the parts list for your product. Use of repaired fuses or short-circuiting of the fuse switch is not permitted.

DO NOT open the equipment to perform any adjustments, measure- ments, maintenance, parts replacement or repairs until all power sup- plies have been disconnected.

Only a properly trained technician should work on any equipment with power still applied.

When opening covers or removing parts, exercise extreme care since "live parts or connections can be exposed".

Capacitors in the equipment can retain their charge even after the unit has been disconnected from all power supplies.

vi Safety Practices and Precautions

2000585-001

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Siemens DataNET Hub (DNH) user manual Safety Practices and Precautions