vIf you need to work on a machine that has exposed electrical circuits, observe the following precautions:
–Ensure that another person, familiar with the
Remember: Another person must be there to switch off the power, if necessary.
–Use only one hand when working with
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 the 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 maintenance information. Use extreme care when measuring high voltages.
vRegularly inspect and maintain your electrical hand tools for safe operational condition.
vDo not use worn or broken tools and testers.
vNever assume that power has been disconnected from a circuit. First, check that it has been
vAlways look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds.
vDo not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage.
vDo not service the following parts with the power on when they are removed from their normal operating places in a machine:
–Power supply units
–Pumps
–Blowers and fans
–Motor generators
and similar units. (This practice ensures correct grounding of the units.)
vIf an electrical accident occurs:
–Use caution; do not become a victim yourself.
–Switch off power.
