Rockwell Automation 1502 Medium Voltage Contactor, 800A (Series D and E) - Manual (Page 37)

4-8 Maintenance
1502-UM051E-EN-P – June 2013
Rocker Washer
Gap Adjustment Nut
Gap Locking Nut
Rocker Bar
Rocker Bar
Front View Side View
Figure 4.9 – Rocker Washer Adjustment
12. Repeat steps 9, 10 and 11 for the remaining vacuum bottle assemblies.
Note: Make sure that the rocker washers for all three assemblies just make
contact with the rocker bars as this will ensure synchronized contact move-
ment.
13. REMOVE THE 3/16” ROD DRILL BIT OR SCREW INSERTED IN
STEP 8 FROM BETWEEN THE ARMATURE AND YOKE PLATES.
14. Move the actuator plate up and down manually and check that the rocker
washers make contact simultaneously. If they do not, loosen the nuts below
the appropriate washers and adjust accordingly.
15. Reinstall the return spring and advance the compression bolt until the arma-
ture plate makes contact with the stop as shown in Figure 4.10. Advance the
bolt one additional full turn to ensure that the contactor opens fully. Hold-
ing the Compression bolt in position with a wrench, tighten the compres-
sion bolt locking nut.
Vacuum Bottle Replacement
and Set-up Procedure (cont.)