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 Preventive Maintenance Checks and Services
Table 2-1.
Q - Quarterly
S - Semiannually
D - Daily W - Weekly
A - Annually
M - Monthly
Items To Be
Interval
Item
Procedures
Inspected/
No.
D
W
M
Q
S
A
Serviced
CONTROL CENTERS/SWITCHBOARDS - CONT
Motor Control
WARNING
89
q
Centers -
Consider all electrical leads
CONT
to be energized until
positively proven they are
deenergized.
(3) Test unit with a multimeter to ensure circuits are
deenergized.
(4) Clean interior of controller with rags and dusting
brush to clean hard-to-reach areas.
NOTE
Where relay/contactor
contacts are not accessible
for visual inspection,
consult work center
supervisor to determine
extent of this inspection.
(5) Inspect contact surfaces for sharp projections,
pitting, misalignment, and overheating.
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