NovaScale Blade safety and regulatory information v
Electrical Safety
CAUTION:
Electrical current from power, telephone, and communication cables can be hazardous. To
avoid personal injury or equipment damage, disconnect the server system power cords,
telecommunication systems, networks, and modems before you open the server covers, unless
instructed otherwise in the installation and configuration procedures.
✏ Important: Observe the following rules when working on electrical
equipment.
•Use only approved tools and test equipment. Some hand tools have handles covered with a soft
material that does not protect you when working with live electrical currents.
•Many customers have rubber floor mats (near their equipment) that contain small conductive
fibers to decrease electrostatic discharges. Do not use this type of mat to protect yourself from
electrical shock.
•Find the emergency power-off (EPO) switch, disconnect switch, or electrical outlet in the room.
If an electrical accident occurs, you can quickly turn off the switch or unplug the power cord.
•Do not work alone under hazardous conditions, or near equipment that has hazardous voltages.
•Disconnect all power before:
—Performing a mechanical inspection
—Working near power supplies
—Removing or installing main units
•Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the
customer to power-off the wall box (that supplies power to the machine) and to lock the wall box
in the off position.
•If you need to work on a machine that has exposed electrical circuits, observe the following
precautions:
—Ensure that another person, familiar with the power-off controls, is near you. Remember:
another person must be there to switch off the power, if necessary.
—Use only one hand when working with powered-on electrical equipment; keep the other
hand in your pocket or behind your back.
—Remember: There must be a complete circuit to cause electrical shock. By observing the
above rule, you may prevent a current from passing through your body.
•When using testers, set controls correctly and use the approved probe leads and accessories for
that tester.
•Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such
as metal floor strips and machine frames.
•Observe the special safety precautions when you work with very high voltages; these
instructions are in the safety sections of the maintenance information. Use extreme care when
measuring high voltages.
•Regularly inspect and maintain your electrical hand tools for safe operational condition.
