Rockwell Automation Allen-Bradley CENTERLINE 600, User Manual

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Rockwell Automation Publication 1512A-UM101B-EN-P - December 2021 59
Chapter 5 Maintenance
6. Manually close the contactor by attaching locking pliers to the contactor
operating lever and pushing down until the armature plate contacts the
magnetic cores (see
Figure 43 ). Verify that the interlock lever overlaps the
isolation switch operating lever by at least 3 mm (0.125 in.) (see
Figure 46 ).
Figure 46 - Isolation Switch Operating Lever Overlap
7. 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 Maintenance
1. Complete the Power Lockout Procedure (refer to Power Lock-out
Procedure on page 49 ).
2. Open the medium voltage door.
3. Inspect the condition of the clevis pin and cotter pins that are shown in
Figure 47 . 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 47 ).
Overlap minimum
0.125 in. (3 mm)
Isolation
Switch
Operating
Lever
Interlock Lever
ATTENTION: To avoid shock hazards, lock out incoming power (refer
to Power Lock-out Procedure on page 49 ) 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.