Table C-1. Preventive Maintenance Checks and Services for Electrical Power Systems (Continued)
B - Before
D - Daily
Q - Quarterly
D - During
W - Weekly
S - Semiannually
A - After
M - Monthly
A - Annually
Item to be
Check for and have repaired
D W M Q S A
or adjusted as necessary
DO NOT use solvents to clean electrical
components. Solvents may leave a greasy
film that reduces electrical conductivity.
c. Check components such as panel cov-
ers, housing, and metal surfaces for rust
corrosion, and worn or chipped paint.
Use a wire brush to remove rust and cor-
rosion and paint with zinc chromate
primer and finish to match surrounding
area in accordance with TB 43-0144. Do
rot paint threads or labels.
d. Check engine failure lights by using
PRESS-TO-TEST button. H lamps do not
light, change bulbs when generator being
operated is off-line.
Avoid using solvents for cleaning Internal
portions of electrical system. Solvents often
leave a greasy film on components that may
reduce electrical conductivity.
1) Clean electrical equipment. Avoid
damaging insulation, mounting sys-
tem, and hardware, or impairing elec-
trical properties of item being cleaned.
2) Vacuum internal portions of switch-
board, power panels, electrical con-
trollers, inverters, battery chargers,
and receptacles. Vacuum grit, iron
dust, and copper particles from
3) Wipe dirt from external surfaces of
electrical equipment with dry cheese-
cloth or, if necessary, with a damp
soapy cloth. Wipe dry.
4) Clean circuit breakers, contacts and
relays with fine sandpaper to remove
black discoloration. Do NOT use
5) Clean arc chutes on circuit breakers
with a fine file. Vacuum to remove