Avaya S8730 Maintaining Manual page 7

Observer the following rules when working on electrical equipment.
• Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical
outlet. If an electrical accident occurs, you can then operate the switch or unplug the
power cord quickly.
• Do not work alone under hazardous conditions or near equipment that has hazardous
voltages.
• Disconnect all power before:
• Before you start to work on the server, unplug the power cord. If you cannot unplug it,
ask the customer to switch off the wall box that supplies power to the server.
Afterwards, lock the wall box in the off position.
• If you must work on a server that has exposed electrical circuits, observe the following
precautions:
• Regularly inspect and maintain your electrical hand tools for safe operational
condition. Do not use worn or broken tools and testers.
• Never assume that power was disconnected from a circuit. First, verify that the unit is
turned off.
• Always look carefully for possible hazards in your work area. Examples of hazards
are moist floors, non-grounded power extension cables, power surges, and missing
safety grounds.
• Do not touch live electrical circuits with the reflective surface of a plastic dental mirror.
The surface is conductive. Touching a live circuit can cause personal injury and
damage to the server.
• Use only approved tools and test equipment. Some hand tools have handles covered
with a soft material that does not insulate you when working with live electrical
currents.
• Many customers have, near their equipment, rubber floor mats that contain small
conductive fibers to decrease electrostatic discharges. Do not use this type of mat to
protect yourself from electrical shock.
If an electrical accident occurs:
Maintaining the Avaya S8730 Server for Modular Messaging
- Doing a mechanical inspection
- Working near power supplies
- Removing or installing servers
- Ensure that another person, familiar with the power-off controls, is near you.
Another person must be there to switch off the power if necessary.
- Stand on suitable rubber mats to insulate you from grounds such as metal
floor strips and system unit frames. Obtain the mats locally, if necessary.
- When using testers, set the controls correctly and use the approved probe
leads and accessories for that tester.
- Use only one hand when working with powered-on electrical equipment. Keep
the other hand in your pocket or behind your back. This precaution can
prevent a current from passing through your body.
Electrical safety rules
June 2009 7