Figure 3-14.Diagram of the portable power distribution panelboard.
While standing a generator watch, you must be alert
and respond quickly when you recognize a problem.
You might not have control of every situation but at
least you can secure the generator and prevent serious
Your primary purpose is to produce power in a safe
and responsible manner. You may notice maintenance
or repair actions that need to be rectified but do not
require immediate attention and do not affect your
watch Make note of these problems so that they will be
taken care of by the repair crew. In addition,
concentrate on doing your job properly, and your efforts
will pay off.
A generator watch involves performing operator
maintenance, maintaining the operators log, operating
a single generator, or operating paralleled generators.
Operator maintenance generally includes whatever
you have to do to start the generator set and keep it
running smoothly and safely. Equipment must be
inspected systematically so that defects can be
discovered before a serious failure occurs. Operator
maintenance includes both prestart checks and
When starting the generator set and preparing to put
it on line, you expect everything to go well. A
systematic inspection before start-up will help ensure
that the generator will operate properly. To do a prestart
checkonthe generator, make the following inspections:
1. Ground cable. See that the cable is intact and
that the connections are tight.
2. Engine. Compare the actual lube oil level to
the appropriate markings (running level or stopped
level) on the dipstick. The stopped level is, of course,
appropriate for prestart checks. Add oil as required.
Check the engine for loose connections; free action
of all moving parts, such as the throttle linkage and the
emergency shut-off lever; and for leaking oil, fuel, or
3. Coolant system. Check that the coolant is at
the required level. Add coolant as required. Using an
antifreeze solution tester, check that the antifreeze