MIL-HDBK-l130
Electrical Equipment Withdrawn from Service. Electrical equipment
2.2.5.3
withdrawn from service, but not removed to storage, should be protected to
inhibit corrosion. Lightning arrestors should be left connected and in
service.
Service switches in empty buildings should be open, and the
continuity and condition of neutral grounds at switches should be checked.
Switches for electrical or mechanical equipment should be left in the "OFF" or
open position. Fuses should be removed and placed inside the fuse boxes,
which should be securely closed. All disconnected wires, corresponding
connections, and switches should be labeled appropriately.
Shrouding. Equipment should be covered completely with plastic or
2.2.5.4
waterproof paper. Covering should be secured in place by waterproof tape
along the edges of the top and sides of the covering or by wire or other
fasteners as long as it is waterproof at the top. The bottom of the shroud
should not be sealed. If two or more sheets of shrouding are joined, joints
need to be sealed so that they are as waterproof as the shrouding material
itself. Shrouding material may be applied in a shingle-type covering with at
least 24 inches overlap; sealing is not required as long as waterproof
protection from above is maintained.
2.2.5.5
Motors, Generators, and Control Equipment. Motors in dry locations
and those totally enclosed should be protected in plastic. All motors and
generator sets on permanent mounts should be protected/preserved in place.
Motors and generators in damp locations should be cleaned, covered, and
removed to dry storage. Motors, generators, control panels, switch boxes,
circuit breakers, fuses, and control devices should be protected from dirt,
dust, water, and mechanical damage by being covered with shrouds. Prior to
shrouding, equipment should be cleaned, lubricated, and securely blocked and
braced to prevent movement. Lubrication procedures that apply to the specific
equipment should be followed in preparing material for inactivation.
a)
Commutators. When accessible, lift the brushes and apply wax-
free, Grade A, grease-proof paper around the commutator; then
let the brushes rest against paper wrapping commutator. Rust-
preventive compound should not be applied to the commutator.
b) Exposed Steel Shafts. Exposed steel shafts of motors and
generators should be cleaned with solvent and coated with
corrosion-preventive compound. Care should be taken to keep
corrosion-preventive compound out of bearings, commutators,
brushes, brush holders, collector rings, windings, and similar
parts.
c)
Bearings and Journals. Grease- or oil-lubricated journals,
bearings, or similar surfaces should be lubricated as
recommended by the manufacturer. Journal boxes and bearings
should be wrapped in plastic or waterproof paper for protection
from dust and dirt.
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