Rockwell Automation 1502 Medium Voltage 400A Contactor - Series E - Manual (Page 46)

46 Rockwell Automation Publication 1502-UM052H-EN-P - June 2013
Chapter 4 Maintenance
Figure 38 - Closing the Contactor
4. After the top screw is finger tight, continue to tighten this screw with a
hand tool. 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
Figure 39 and Figure 40 .
Figure 39 - Gauging the Contacts