Installation 18
Step 6: Limit Switch Adjustments
Open Limit Switch
Close Limit Switch
Auxiliary Close Limit Switch
OPEN
Direction
CLOSE
Direction
Figure 14: Limit Switch Layout
CLOSE LIMIT SWITCH
The CLOSE limit switch is preset at the factory. If you rotated the pulley in section Arm and Turnbuckle Shaft Adjustments (page 16), you will need to reset the cam on the CLOSE limit switch.
1Back out the set screw on the cam. Then rotate the cam in the close direction so that the switch just clicks when the gate arm is in its lowest position (see Figure 14).
2When the cam is in the desired position, retighten the set screw. This adjustment may have to be fine tuned after turning on power and running the unit for the first time.
AUXILIARY CLOSE LIMIT SWITCH
The AUXILIARY CLOSE limit switch is preset at the factory. If you made an adjustment to the CLOSE cam, you will need to adjust the cam on the AUXILIARY CLOSE limit switch also.
1Position the AUXILIARY CLOSE cam slightly ahead of the CLOSE cam. When the gate arm is on its down travel, the AUXILIARY CLOSE switch will click just before the CLOSE switch.
2When the cam is in the desired position, retighten the set screw.
OPEN LIMIT SWITCH
The OPEN limit switch is preset the factory. This setting may have to be fine tuned after running the unit for the first time.
1Loosen the OPEN cam and rotate in the open direction until the switch just clicks. See Figure 14.
2Retighten the cam.
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