Rockwell Automation 1502 Medium Voltage Contactor, 800A (Series D and E) - Manual (Page 35)

4-6 Maintenance
1502-UM051E-EN-P – June 2013
7. Reassemble the assembly using a new vacuum bottle, leaving the bottom gap
locking nut and lock washer off. Position the insulator to achieve the 243.3
mm (9.58 in.) dimension as shown in Figure 4.6 and leave the load terminal
nut loose (the position of the load terminal shall be in the opposite direction
of the wear indicator line on the movable shaft). Repeat this procedure for
the remaining vacuum bottle assemblies.
The 9.58" dimension is not critical, it is simply a good starting point in order
to make the installation easier.
Movable Shaft
Load Terminal
Load Terminal Nut
9.58” (243.3 mm)
Figure 4.6 – Reassembled Vacuum Bottle Assembly
8. Position a 4.76 mm (0.1875 in.) diameter rod, e.g. drill bit or screw, between
the armature plate and the yoke plate to prevent the contactor from closing
as shown in Figure 4.7.
Yoke Plate
(Position 3/16” rod here)
Armature Plate
Figure 4.7 – Set-up Position
Vacuum Bottle Replacement
and Set-up Procedure (cont.)