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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
NOTE
Motor Control
q
79
Centers CONT
Maintenance procedures for
all motor control centers
are the same.
a. Visual Inspection. Look for indications of
overheating, arcing, or insulation breakdown.
Physical Inspection.
b.
(1) Feel the doors, enclosure sides, and deadfront,
surfaces of switches with the palm of the hand.
(2) Any surface with a temperature which the palm of
the hand cannot stand for about 3 seconds
indicates trouble.
(3) Shut motor controller down immediately and repair
or replace as necessary.
q
NOTE
Ship Service/
80
Emergency
Maintenance procedures for the Ship Service
Switchboard
and Emergency Generator Switchboards are
the same.
Visual Inspection. Visually check fuses, indicating
lamps, meters, wiring, terminal connections, loose or
damaged components, and general interior and exterior
appearance of switchboard.
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