Rockwell Automation 1502 Medium Voltage Contactor, 800A (Series D and E) - Manual (Page 31)

4-2 Maintenance
1502-UM051E-EN-P – June 2013
Routine Maintenance (cont.) 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
hex shaft, moves up into the bearing, replace all three vacuum bottles. (Re-
fer to Figure 4.11) Under normal conditions, this will not be necessary until
the contactor has gone beyond the 250,000 rated life (100,000 for mechani-
cal latch contactors).
HiPot Test (Refer to Chapter 2)
• Check the vacuum bottle integrity.
• Check the insulation resistance.
Lubrication
Note: Lubrication of the contactor is not necessary. Do not grease the armature
shaft plastic bearings, nor the vacuum bottle plastic bearings.
The grease will dry out and impede the free motion of the contactor.
Mechanical Latch Roller Replacement
• The roller on the mechanical latch mechanism must be replaced every
50,000 operations. See Mechanical Latch Roller Replacement Procedure
(refer to page 4-17).
High voltage may be present, which can result in severe
injury or death. It is suggested that a “Hot Stick” be used to
ensure that the equipment is dead. Lock-out any incoming
power and disconnect the control plug from the contactor
before working on this equipment
Before performing any maintenance on the contactor that is
installed inside a starter configuration, for safety, be sure to
follow all procedures noted in the appropriate User Manual
for complete instructions on accessing the power cell com-
partment.
S H O C K H A Z A R D
A T T E N T I O N