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 Preventive Maintenance Checks and Services
Table 2-1.
S - Semiannually A - Annually
Q - Quarterly
D - Daily W - Weekly M - Monthly
Items To Be
Interval
Item
Procedures
Inspected/
No.
D
W
M
Q
S
A
Serviced
CONTROL CENTERS/SWITCHBOARDS - CONT
(1) Ensure that emergency generator is not in
Ship
87
q
operation.
Service/Emer-
gency
WARNING
Switchboard
Draw-Out
Voltages dangerous to life
Circuit
exist when equipment is open
Breakers -
and energized. Do not work
CONT
alone.
CAUTION
Before inspection or any
maintenance work is done, be
sure that the breaker is in
the open position. All
electrical power, both
primary and control sources,
should also be disconnected.
(2) Deenergize circuit breaker.
(3) Periodic inspection of the circuit breaker is
recommended at least once a year. More frequent
inspections are recommended if severe load
conditions, dust, moisture, or other unfavorable
conditions exist.
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