LiftMaster SW420 SW420 S3 BOARD Manual - Page 25
Manual Operation
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Manual Operation 25 Manual Operation To operate the gate manually, disconnect the control arm from the drive hub by removing the hairpin cotter and then the clevis pin and allowing the manual release pin to drop down through the hub. The arm should now be free and the gate can be opened and closed normally. If desired, a padlock can be used in place of the clevis pin to hold the manual release pin in place. Figure 18 01-G0610F17 Doc 01-G0610 Rev A
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Manual Operation
25
Doc 01-G0610
Rev A
Manual Operation
To operate the gate manually, disconnect the control arm from the drive hub by removing the hairpin
cotter and then the clevis pin and allowing the manual release pin to drop down through the hub. The
arm should now be free and the gate can be opened and closed normally.
If desired, a padlock can be used in place of the clevis pin to hold the manual release pin in place.
01-G0610F17
Figure 18