Rockwell Automation 1502 400 Amp Medium Voltage Contactor (Series D) - Manual (Page 40)

4-12 Maintenance
1502-UM050D-EN-P – June 2013
Figure 4.15 – Closing the Contactor with the aid of a wrench
4. After the top screw is finger tight, continue to tighten this screw with a
hand tool. Note: The armature stop bracket will flex a little; this is
acceptable but do not over-tighten and bend the armature stop plate. It is
important that the armature plate is held tightly against the magnet cores.
The contactor must be fully closed.
5. Place a wide blade 0.030 in. (0.76 mm) feeler gauge between the plastic
auxiliary actuator tips and the steel actuator plate. To aid the installation
of the feeler gauge, the gauge can be put in place as the clamping block
screw is being finger tightened (Step 3). Reference Figures 4.16 and 4.17.
Figure 4.16 – Gauging the Contacts
Auxiliary Contact Set-up
Procedure (cont.)