CAUTION
maintenance requirements of electrical equip-
ment. Always use the PMS procedures when
A mixture of hydrogen and air can be
doing preventive maintenance, or use the
dangerously explosive. DO NOT permit
applicable technical manual when troubleshoot-
smoking, electric sparks, or open flames
ing. Strictly follow safety precautions found
near charging batteries.
on MRCs and in technical manuals. When
working around electrical equipment, remember
that safety is the most important aspect of the job.
SUMMARY
Use the tag-out procedures, test your meters, use
The information provided in this chapter
the two-man rule, and do not bypass any safety
should help you understand some of the basic
devices.
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