Rockwell Automation 1512B MV Controllers, 200/400A Two-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 54)

46 Rockwell Automation Publication 1500-UM055G-EN-P - May 2013
Chapter 5 Maintenance
Door Interlock Circumvention
Some of the following sections may require moving the isolation switch handle to
the ON position while the medium voltage door is open. The interlocking
safeguards in the mechanism are designed to prevent the handle from moving to
the ON position while the cabinet door is open.
• To circumvent this safety feature, use a screwdriver, or other tool, to
depress the door interlock lever in a downward movement.
• Hold the lever down while moving the handle to the ON (closed)
position.
Figure 45 - Door Interlock Lever
ATTENTION: The door interlock mechanism is designed to prevent access to the
medium voltage cell while the unit is energized. When the unit is in operation,
do not circumvent this interlocking safety feature. Always disconnect and lock
out incoming power (refer to
Power Lock-out Procedure on page 47 ) before
proceeding with any adjustments requiring the handle to be moved to the ON
(closed) position. Failure to do so may result in electric shock causing severe
burns, injury or death.
Door Interlock Lever
ATTENTION: Use suitable personal protective equipment (PPE) per local codes
or regulations. Failure to do so may result in severe burns, injury or death.