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Fig. 9 Pulling Switch Open
Open Position
Closed Position
5° Over Travel
5° Over Travel
Fig. 10 Pushing Switch Open
(Shown in Closed Position)
Switch Adjustment Tips
The section will cover the concepts to properly adjust your switch.
When operating the switch, the offset bearing should “snap” over dead-center in the closed and open
positions. This is also referred to as toggle. This serves as a signal to the operator that the switch is either
fully open or closed. This is also a safety feature that insures that the switch is locked in the open and
closed positions.
Adjustments can be made to the offset rod to equalize the toggle in the open and closed positions. A change
in the offset rod length will also affect the final position of the open or closed switch blade as described
below:
If the offset bearing is
pulling
the switch open (Fig. 9):
•
Shortening will reduce toggle pressure in the closed position and add in the open position. It may also
decrease blade roll in on close and increase blade open angle.
•
Lengthening will reduce the toggle pressure in the open position and add to the close position. This
should increase the blade roll in on the close position and decrease blade open angle.
If the offset bearing is
pushing
the switch open (Fig.10):
•
Shortening will increase toggle pressure in the closed
position and decrease in the open position. This should
increase the blade roll in on the close position and
decrease blade open angle.
•
Lengthening will reduce the toggle pressure in the close
position and add to the open position. This will decrease
blade roll in on close and increase blade open angle.
