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 Preventive Maintenance Checks and Servicer
Table 2-1.
A - Annually
S - Semiannually
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
NOTE
l
Motor Control
81
Centers
Maintenance procedures for
all motor control centers
are the same.
a. Visual Inspection.
Visual Inspection.
(1) Inspect interlock switch handle, controller
switches, and light lenses for cracks,
breakage, and damage. Replace as required.
(2) Pull down switch handle and padlock.
(3) Turn panel door screws 1/4 turn
counterclockwise.
(4) Swing panel door left to open.
(5) Inspect transformer for damage, loose or
broken wires, and frayed or burnt wires.
Replace as required.
(6) Inspect interlock switch for damage, loose or
broken wires, burnt contacts or frayed or burnt
wires. Replace as required.
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