Rockwell Automation Allen-Bradley 7712, User Manual

Page: 17 / 74

Rockwell Automation Publication 7712-UM001D-EN-P - October 2017 17
Safety Interlock and Accessibility Requirements Chapter 2
Opening the Medium Voltage Door
1. Electrically open the contactor by pressing the STOP button on the
controller or at the remote control location.
2. Move the contactor cart to the isolated position.
3. Ensure the earthing switch is closed (
page 30 ).
4. Lift the release handle and swing the door to the left.
Close and secure the medium voltage door in the reverse order of opening.
ATTENTION: This procedure requires contact with medium voltage
components. To avoid shock hazards, complete the Power Lockout procedure
on page 27 before servicing the equipment. Verify with a hot stick or
appropriate voltage measuring device that all circuits are voltage free. Failure
to do so may result in severe burns, injury or death.
IMPORTANT Failure to open the medium voltage door in the proper manner could
damage or jam the mechanical door interlocks. This may result in the
mechanical interlocks not operating as intended and may result in the door
becoming jammed in the closed position.
TIP This procedure is contained on a label on the door of the controller for your
reference.