GE Industrial Solutions Power Break I 800-2000 Frames 240-600 VAC - Manual (Page 26)

Power Break ® Circuit Breakers
Chapter 4. Maintenance
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W W W WA A A AR R R RN N N NIIIIN N N NG G G G:::: Before beginning any maintenance work,
disconnect the breaker from all voltage sources, both
power and control, and ensure that the breaker is
OFF .
4–1 Inspections
Circuit breakers should be maintained through the
implementation of a systematic maintenance program. A
periodic inspection routine is recommended. The fre-
quency of inspection should depend on the environ-
mental conditions of each breaker. All circuit breakers
should be inspected at least annually. It a breaker is oper-
ated frequently or installed in an area of high humidity,
dust, or dirt, the frequency of maintenance inspections
should be increased. Under extremely adverse conditions,
monthly inspections are recommended.
The maintenance inspection should begin with an overall
visual check. If dirt, grease, or any other foreign material
is found on or in the breaker, it should be thoroughly and
carefully removed. Do not use solvents on insulating mate-
rial.
A rotating program providing for a periodic withdrawal
from service of each breaker in turn for inspection and
maintenance is an excellent means of establishing a high
level of service reliability. In such cases, one or more spare
breakers and all accessories should be available during the
maintenance inspection to replace any breaker that may
be removed for repairs.
N N N NO O O OT T T TE E E E:::: When ordering spare parts, always enclose com-
plete information from the breaker name plate, includ-
ing the breaker’s serial number.
4–2 Lubrication
Moderate lubrication is all that is required for most circuit
breakers. Mechanical bearing points and sliding surfaces
should be lubricated at the regular inspection periods
with a thin film of molybdenum disulfide (Molykote G) or
Mobil 28 grease. GE recommends the use of kerosene for
removing hardened grease and dirt from the latch and
bearing surfaces. All excess lubricant should be removed
to avoid any contamination of dirt or dust.
C C C CA A A AU U U UT T T TIIIIO O O ON N N N:::: Under no circumstances should lubricant be
applied to contact areas.