TM 55-1930-209-14&P-9-1
2-21.
Preventive maintenance checks and services. See TM 55-1930-209-14&P-9-1, Appendix C for preventive
maintenance checks and services for the electrical power system. See TM 55-1930-209-14&P-1 9 for complete preventive
maintenance checks and services for all ROWPU Barge Systems.
2-22. Troubleshooting. This should be accomplished by following stepson page 13, Section 3: Trouble Shooting Guide,
Electric Power Controls Operation Manual, in Appendix B.
2-23. Maintenance procedures.
These are general maintenance procedures for components of this system. Detailed
repair and maintenance procedures are in manufacturers’ manuals in Appendix Bi which is bound in a separate companion
volume.
WARNING
Make sure all electrical components are electrically dead before starting any cleaning or
Inspection procedures. Circuit breakers must be open (OFF) and appropriately tagged to
preclude accidental activation during these procedures.
2-23.1 Cleaning
a.
In cleaning electrical equipment, avoid damaging insulation, mounting system, and hardware, or impairing
electrical properties of item being cleaned.
b.
Vacuum internal portions of switchboard, power panels, electrical controllers, inverters, battery chargers, and
receptacles. Vacuum grit, iron dust, and copper particles from enclosed areas.
c.
Wipe dirt from external surfaces of electrical equipment with dry cheesecloth or, if necessary, with a damp,
soapy cloth.
d.
Avoid use of solvents for cleaning internal portions of electrical system. Solvents often leave a greasy film on
components that may reduce electrical conductivity.
e.
Clean circuit breakers, contacts, and relays with fine sandpaper to remove black discoloration. Do NOT use
emery paper or emery cloth to dean these contacts. Clean arc chutes on circuit breakers with a fine file.
Vacuum to remove residue.
f.
Electrical contacts may be cleaned with silver polish, fine sandpaper, or a burnishing tool. Do NOT use emery
paper or steel wool. Vacuum to remove residue.
2-23.2
Inspection. Inspect by feeling with the hands and carefully observing conditions of all hardware, cabling mountings,
and hangers. Tighten and/or replace components as necessary.
a.
Inspect each cable as it leaves switchboard. Check fastenings as they exit switchboard and all fasteners,
mounting hardware, and hangers to make sure they are tight.
b.
Check each cable on both sides of its passage through bulkheads. Check that cables and/or electrical conduit
are tight, not rubbing or chafing cables, and free of corrosion and dirt. Conduct same inspection of cables as
they pass through decks and other structural parts of barge.
c.
Check each cable at its destination to make sure it is firmly attached, not rubbing or chafing, and free of
corrosion and dirt.
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