Powered by Safety
®
33
IB-65100
Maintenance
B. M
ECHANISM
A
REA
1)
Mechanical
Operation
Remove the circuit breaker front cover
to expose the stored energy mechanism.
Make a careful visual inspection of the
mechanism for loose, damaged, or
excessively worn parts.
Note:
If timing tests are performed as in,
Ch 5 Maintenance,
D. O
PTIONAL
M
AINTENANCE
P
ROCEDURES
, do not
operate the circuit breaker until these
tests are completed. Operation of the
mechanism may alter the “As found”
operating condition of the circuit
breaker’s stored energy mechanism.
For further details, see
Ch 4 Installation,
D. P
LACING
THE
C
IRCUIT
B
REAKER
I
NTO
S
ERVICE
,
4) Mechanical Operation Check.
2)
Lubrication
CAUTION
CAUTION
!
Before applying any type of lubrication to the
circuit breaker, the stored-energy mechanism
should be in the open position, and all springs
should be discharged.
Powell offers a complete lubrication kit
(Powlube-102) which contains all the
lubricants required for maintaining the
circuit breakers. Powlube-102 contains
Rheolube 368A grease, Anderol 456 oil, and
Mobilgrease 28.
Rheolube 368A grease should be lightly
applied to those bearing surfaces that are
accessible. Inaccessible surfaces, such as
bearings, may be lubricated with a light
synthetic machine oil such as Anderol 456
oil. Mobilgrease 28 should be applied to
the electrical contact surfaces.
Lubricate the stored-energy mechanism
and other specified parts in accordance
with
Table B, Lubrication
. See Figures 16
and 17 for labeled lubrication photographs.
Table B, Lubrication
lists the location of all
surfaces that should be lubricated, the type
of lubricant to be used, and the method of
applying the lubricant. The guiding rule
in lubrication is to lubricate regularly, use
lubricant sparingly and remove all excess
lubricant. There is no need to disassemble
the mechanism for lubrication. Tilting the
circuit breaker will enable the lubricant to
cover the bearing surfaces.
