Rockwell Automation 1512B MV Controllers, 200/400A Two-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 63)

Rockwell Automation Publication 1500-UM055G-EN-P - May 2013 55
Maintenance Chapter 5
Figure 54 - Isolation Switch Handle Adjustments
To Reduce the Gap Distance
5. Loosen the two screws in the stop bracket and move the stop bracket up
against the interlock lever.
6. With the feeler gauge positioned in the gap, move the interlock lever and
the stop bracket closer to the isolation switch operating lever to reduce the
gap space. Tighten the stop bracket screws.
7. Tighten the nyloc nut until it is snug against the contactor interlock lever.
Do not overtighten the nyloc nut as it will move the interlock lever and
reduce the gap. Proceed to Step 11.
To Increase the Gap Distance
8. Loosen the two screws in the stop bracket and move the stop bracket away
from the interlock lever.
9. Loosen the nyloc nut until the gap reaches the desired size.
Isolation Switch
Operating Lever
Isolation Switch
Handle at halfway
position
Nyloc Nut
Contactor Interlock Lever
Contactor Interlock Rod
Stop Bracket
Switch Interlock Lever
Gap: 0.045...0.060 in.
(1.1...1.5 mm)