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Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
I.B. 94A1994R01
Page 25
Effective: April 2005
IB01301018E
SECTION 6: INSPECTION AND MAINTENANCE
6.1 INTRODUCTION
• DO NOT WORK ON A BREAKER IN THE “CONNECTED”
POSITION.
• DO NOT WORK ON A BREAKER WITH SECONDARY
DISCONNECTS ENGAGED.
• DO NOT WORK ON A BREAKER WITH SPRINGS CHARGED OR
CONTACTS CLOSED.
• DO NOT DEFEAT ANY SAFETY INTERLOCKS.
• DO NOT LEAVE MAINTENANCE TOOL IN THE SOCKET AFTER
CHARGING THE CLOSING SPRINGS.
• STAND AT LEAST ONE METER AWAY FROM THE BREAKER
WHEN TESTING FOR VACUUM INTEGRITY.
• FAILURE TO FOLLOW ANY OF THESE INSTRUCTIONS MAY
CAUSE DEATH, SERIOUS BODILY INJURY, OR PROPERTY
DAMAGE. SEE SECTION 2 - SAFE PRACTICES FOR MORE
INFORMATION.
6.2 FREQUENCY OF INSPECTION
Inspect the breaker once a year when operating in a clean, non
corrosive environment. For a dusty and corrosive environment,
inspection should be performed twice a year. Additionally, it is
recommended to inspect the breaker every time it interrupts fault
current.
Refer to the table on following page for maintenance and inspection
check points.
•
Apply one drop of
light machine oil at
locations shown.
Figure 6-1 Lubrication Areas
WARNING