Rockwell Automation 1502 Medium Voltage 400A Contactor - Series E - Manual (Page 37)

Rockwell Automation Publication 1502-UM052H-EN-P - June 2013 37
Maintenance Chapter 4
Main Contact Inspection
Visually inspect the wear of the main contacts with the contactor energized.
When any part of the wear indicator line, located on the front side of the shaft,
moves up into the bearing, replace all three vacuum bottles (
Figure 25 ).
Figure 25 - Vacuum Bottle Wear Indicator
HiPot test
Check the vacuum bottle integrity (see page 14 ).
Check the insulation resistance.
Lubrication
Using Aeroshell No. 7 (1 oz tube, Part No. 40025-198-01) grease the actuator
plate where the overtravel springs and washers make contact (
Figure 26 ).
Vacuum Bottle
Wear indicator line
on operating shaft