Rockwell Automation 1512A MV Controllers - 800A One-High Cabinet - Manual (Page 28)

Installation – Arc Resistant (ArcShield) 3-3
1512A-UM102E-EN-P – June 2013
The Medium Voltage door is identified as MV in Figure 3.2.
I M P O R T A N T I M P O R T A N T
Failure to follow the MV door opening procedure
could damage or jam the mechanical door
interlocks. This could result in the mechanical
interlocks not operating as intended and could
result in the door becoming jammed in the closed
position.
Note: On all ArcShield starters, the sticker shown in Figure 3.3 is
attached to each door for your reference.
1) Electrically open the contactor by pressing the STOP button on
the starter or at the remote control location.
2) Move the isolation switch handle to the OFF position.
3) Turn the black release handle counter clockwise 90 degrees.
4) Unbolt the door locking bolts for the upper right hand medium
voltage door.
5) The door is now released and will swing open.
6) The lower right hand MV door will now be able to be opened.
Unbolt the door locking bolts. Turn the release handle counter
clockwise. The door is now released and will swing open.
7) The lower left hand medium voltage door will now be able to be
opened. Unbolt the door locking bolts. Turn the release handle
counter clockwise. The door is now released and will swing open.
8) Reverse the procedure to close the door. Door lock bolts must be
adequately tightened. (Refer to page 1-3 for Torque Values).