Set The Closed Position Limit For Pull-To-Open Installation - Nortek Security & Control Mighty Mule HD272 Installation Manual

Step 6
At the AC outlet, strip
wire. Attach these stripped ends to the transformer terminals. A dab of
household petroleum jelly on each terminal will help prevent corrosion. We
suggest adding crimp on fork lugs to the end of each wire before attaching it
to the transformer.
Make sure the exposed wires do not touch each other!
17
HD272 Installation Instructions
1 / 2 " of insulation from the ends of the low voltage Set the CLOSED Position Limit for PULL-TO-OPEN
Installation
Your transmitter must be able to operate the gate. If not see, "Personalize Your Transmitter Setting on
Note: The OPEN limit is when the opener is fully retracted and the gate is in the full open position. The open limit setting can
only be adjusted by moving the gate bracket. To achieve the optimum closed position, you must adjust the CLOSED limit setting:
Step 1
Remove the Control Box Cover. Make sure the Control Box switch is ON and that the gate is in the OPEN POSITION (arms fully
retracted).
Step 2
Press and HOLD the 2nd opener JOG CLOSE button on the control board and be prepared to RELEASE the button when the gate
reaches the desired closed position/limit. Use the JOG OPEN and CLOSE buttons to "fine tune" the gate position if necessary.
Step 3
Press and HOLD the 1st opener JOG CLOSE button on
the control board and be prepared to RELEASE the button
when the gate reaches the desired closed position/limit. Use
the JOG OPEN and CLOSE buttons to "fine tune" the gate
position if necessary.
Step 4
With the gates in the desired closed positions PRESS and
HOLD the SET LIMIT button until the alarm and RED
Light come on. Then release the button.
NOTE: The opener must be extended more than 7 inches to
set limits.
Step 5
NOTE: When the control box cover is removed the receiver range is reduced to less than 5 feet.
Press the transmitter button once (within 5 feet of the control board) and allow the gates to fully open. The alarm will beep once
when both gates reach the OPEN LIMIT. This indicates the limits for both arms are programmed in memory.
Step 6
Press the transmitter button and allow the gates to fully close to verify that they stop at the desired positions. Repeat Steps 2-5 if
correction is needed.
NOTE: If the gate stops and reverses you may need to adjust the Stall Force (see below).
CAUTION
For safety reasons the Dual Sense Stall Force setting on the Mighty Mule control board comes from the factory set to the 10 o'clock position. This
setting may need adjustment depending on the size and weight of the gate.
ALWAYS KEEP SAFETY AT THE TOP OF YOUR LIST WHEN ADJUSTING OR SERVICING YOUR GATE SYSTEM.
page 20.
FIRST Opener STATUS
JOG Buttons
1st OPR.
OPEN < JOG > CLOSE
SECOND Opener
JOG Buttons
2nd OPR.
MIN MAX OFF 120
SEC.
STALL FORCE AUTO CLOSE
SET
PWR.
LIMIT
REMOVE JUMPER FOR
PUSH TO OPEN OPTION
SET LIMIT Button SET LIMIT Light
HD272 Installation Instructions
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