For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
IB01301018E
I.B. 94A1994R01
Page 34
Effective: April 2005
6.10 LUBRICATION
All parts that require lubrication have been lubricated during the
assembly with molybdenum disulphide grease. Cutler-Hammer No.
53701QB. Over a period of time, this lubricant may be pushed out
of the way or degrade. Proper lubrication at regular intervals is
essential for maintaining the reliable performance of the mechanism.
The breaker should be relubricated once a year or per the opera-
tions table (Table 6.3), which ever comes first. The locations shown
in Figure 6-1 should be lubricated with a drop of light machine oil.
After lubrication, operate the breaker several times manually and
electrically.
Roller bearings are used on the pole shaft, the cam shaft, the main
link and the motor eccentric. These bearings are packed at the
factory with a top grade slow oxidizing grease which normally should
be effective for many years. They should not be disturbed unless
there is definite evidence of sluggishness, dirt or parts are dis-
mantled for some reason.
If it becomes necessary to disassemble the mechanism, the
bearings and related parts should be thoroughly cleaned, remove old
grease in a good grease solvent. Do not use carbon tetrachloride.
They should then be washed in light machine oil until the cleaner is
removed. After the oil has been drawn off, the bearings should be
packed with Cutler-Hammer Grease 53701 QB or equivalent.
s
g
n
i
t
a
R
s
n
o
i
t
a
r
e
p
O
w
o
l
e
b
d
n
a
A
k
9
2
0
0
0
2
A
k
9
2
e
v
o
b
A
0
0
0
1
p
m
A
0
0
0
3
0
0
0
1
Table 6.3 - Proper Lubrication Times Per Rating
SYMPTOM
INSPECTION AREA
PROBABLE DEFECTS
FAILS TO CLOSE
• Closing Springs not charged
• Control Circuit
• Control Power
(Fuse blown or switch off)
• Secondary Disconnects
• Motor Cut-off Switch
(Poor or burned contacts.
Lever not operational.)
• Terminals and connectors
(Poor or burned contacts)
• Motor
(Brushes worn or commutator
segment open)
• Mechanism
• Pawls
(Slipping or broken)
• Ratchet Wheel
(Teeth worn or broken)
• Cam Shaft Assy.
(Sluggish or jammed)
• Oscillator
(Reset spring off or broken)
Table 6.4 - Troubleshooting Chart
(Continued on next page)
