Rockwell Automation 1512B MV Controllers, 200/400A Two-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 66)

58 Rockwell Automation Publication 1500-UM055G-EN-P - May 2013
Chapter 5 Maintenance
Figure 57 - Isolation Switch Handle Mechanism Lubrication Points
5. Inspect the mounting hardware on the isolation switch operating lever and
contactor interlock rod (see Figure 57 ). Tighten any loose hardware.
6. Inspect the isolation switch blades and the incoming line stabs (see
Figure 63 ). The mating surfaces must be clean and well lubricated.
7. Remove any dirt and dried grease.
8. Lubricate the isolation switch blades and the isolation switch blade pivot
points with Nyogel 759G (see Figure 58 ).
Contactor Interlock Rod
Lubrication Points
(at replacement only)
Interlock Lever
Clevis Pins and Cotter Pins
Threaded Connecting Rod
Isolation Switch
Operating Lever
IMPORTANT Do not scrape or file the parts. This may remove the plating and expose
the underlying copper to corrosion.
IMPORTANT Lubricate the isolation switch blades a minimum of once per year to
avoid excessive wear to the components and to prevent the isolation
switch blades from overheating.