Rockwell Automation 1512A MV Controllers - 800A One-High Cabinet - Manual (Page 64)

5-16 Maintenance
1512A-UM102B-EN-P – June 2013
To avoid shock hazards, lock out incoming power (see
page 5-3) before working on the equipment. Verify
with a hot stick or other appropriate voltage measur-
ing device that all circuits are voltage free. Failure to
do so may result in severe burns, injury or death.
1) Complete the Power Lockout Procedure (see page 5-3).
2) Inspect the grounding of the isolation switch blades. When the isola-
tion switch handle is in the OFF position, the isolation switch blades
must fully engage the grounding pins and be within 0.06 in. (1.5
mm) of the ground bar (see Figure 5-3). When the isolation switch
handle is in the ON position, the blades must fully engage the
incoming line stabs.
Figure 5.14 – Isolation Switch Grounding Adjustment
3) To adjust the distance from the blades to the bar, disconnect the
threaded connecting rod at the handle operating lever. Refer to
Figure 5.11.
4) Turn the threaded connecting rod to lengthen or shorten it. This
will adjust the position of the isolation switch blades in the ON and
OFF position.
Isolation Switch Mechanism
Grounding Adjustment
A T T E N T I O N A T T E N T I O N