Rockwell Automation 1512A MV Controllers, 400A One-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 60)

52 Rockwell Automation Publication 1512A-UM100F-EN-P - May 2013
Chapter 5 Maintenance
Figure 51 - Isolation Switch Operating Lever Overlap
14. Open the contactor. Verify that the interlock lever and the rod move freely
and that the return springs move the assembly back to the starting
position.
Isolation Switch Mechanism
Inspection and Lubrication
1. Complete the Power Lockout Procedure (refer to Power Lock-out
Procedure on page 41 ).
2. Open the medium voltage door.
3. Inspect the condition of the clevis pin and cotter pins shown in Figure 52 .
Replace any worn parts.
4. If it is necessary to replace the isolation switch operating lever or the
interlock lever, apply Dow Corning 55 O-ring lubricant (Rockwell
Automation part no. RU-8216, or equivalent) to the pivot points before
installing the new components (see
Figure 52 ).
Overlap minimum
0.125 in. (3 mm)
Isolation
Switch Switch
Operating
Lever
Interlock Lever
ATTENTION: To avoid shock hazards, lock out incoming power (refer to Power
Lock-out Procedure on page 41 ) before working on 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.