Rockwell Automation 1512A MV Controllers - 800A One-High Cabinet - Manual (Page 50)

5-2 Maintenance
1512A-UM102B-EN-P – June 2013
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 (see
Power Lockout Procedure, page 5-3) 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.
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 5.1 – Door Interlock Lever
Door Interlock
Circumvention