Rockwell Automation 1512A MV Controllers - 800A One-High Cabinet - Manual (Page 46)

Common Installation 4-7
1512A-UM102B-EN-P – June 2013
A T T E N T I O N A T T E N T I O N
Some control circuit configurations may require
control jumpers to let the contactor close during
the test procedure. Do not jumper any isolation
switch contacts such as ISa or ISb (see page 5-12,
figure 5.18, for the location of these contacts).
Using jumpers for these contacts may result in
equipment damage or injury to personnel.
2) Electrically operate the contactor several times. Inspect the armature
plate to verify that it fully contacts the magnetic cores.
3) Turn the selector switch to the OFF position and unplug the test
voltage.
4) Remove any metal filings or loose hardware from around the
magnetic cores of the vacuum contactor. The debris is attracted to
the coil once it is energized and could prevent the contactor from
closing properly.