Rockwell Automation 1502 400 Amp Medium Voltage Contactor (Series D) User Manual
Page 41
Maintenance
4-13
1502-UM050D-EN-P – June 2013
Put feeler gauge here
0.030 in. [0.76 mm]
Auxiliary Actuator Bolt
Put feeler gauge here
0.030 in. [0.76 mm]
Auxiliary Actuator Bolt
Figure 4.17 – Gauging Auxiliary Contact Location
6. With the gauge in place, slide the assembly forward until the contact
actuator bottoms out. With the gauge still in place, carefully tighten the
auxiliary assembly retaining nut.
Important: Always use a wrench to hold the bolt head as you tighten the
nut. Make sure the auxiliary assembly does not move as you tighten the nut.
7. When the first nut is tightened, slide out and remove the feeler gauge.
8. Reinstall the green ground wire on the auxiliary assembly retaining bolt.
Install and carefully tighten the second nut.
9. Slowly loosen the top screw of the contactor clamping fixture to remove
the pressure on the armature plate. Loosen the two mounting screws on the
contactor clamping fixture. Remove the fixture.
10. Energize the control circuit in “TEST” mode and exercise the contactor to
verify set-up. Contactor should open and close smoothly and solidly.