Limit Switch Adjustment; Manual Gate Arm Operation; Manual Gate Arm Operation (Option); Drive Belt Tension - Delta AG812 Instruction Manual

Limit Switch Adjustment

The Limit Switches are preset at the factory for standard operation across a level lane. The limit
switches are adjustable to allow gate arm travel adjustments, where necessary.
CAUTION: Do NOT attempt to adjust the limit switches with the power on. Power switch
must be placed in the 'Off' Position before adjustments are made. The directions indicated
below are made when viewing the Gate from the gate arm side, Gate raise direction is
clockwise (CW), Gate lower direction is counter-clockwise (CCW).
1. To adjust the gate arm for more downward travel, loosen the thumb screw on the down
limit switch cam and rotate slightly CW. Tighten screw, turn Power switch 'On' and
check by operating the Auto-Manual switch. Turn Gate 'Off' and re-adjust as necessary.
2. To adjust the gate arm for less downward travel, loosen the thumbscrew on the down
limit switch cam and rotate slightly CCW. Confirm as above.
3. To adjust the gate arm for more upward travel, loosen the thumbscrew on the up limit
switch cam and rotate slightly CCW, Confirm as above.
4. To adjust the gate arm for less upward travel, loosen the thumbscrew on the up limit
switch cam and rotate slightly CW. Confirm as above.
Manual Gate Arm Operation (Standard Feature):
CAUTION: Do NOT manually operate gate unless power has first been turned off! There
is potential for sever injury if power is restored while manually operating gate.
All AG812 Gates have the capability to be manually raised or lowered. The normal method to
manually raise or lower the gate arm's position is to:
1. Unlock the access cover.
2. Set the 'POWER' Toggle Switch to 'OFF'.
3. Move the drive belt around by hand, thereby moving the gate arm either up or down as
desired. Use care! Having the hand caught between the pulley and belt is painful!
Manual Gate Arm Operation (Optional):
The AG812 can be ordered with a manual crank to perform manual operation. The Gate's top
cover is fitted with a plastic plug, which when removed will allow the crank assembly to be used
to rotate the special sheave on the motor shaft.

Drive Belt Tension:

The drive belt requires periodic tension checking. Improper tension of the drive belt can result in
erratic gate arm motion. See Troubleshooting Section.
Copyright 2013 Delta Scientific Corporation
All Rights Reserved
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Document A2021.6