Nortek Control Mighty Mule MM571W Installation Manual page 45

Step 1: Enter the primary arm limit programming mode.
With the power on for your control box, press and hold both the S2 and the S3 buttons at the same time until LED 1 turns on and
the buzzer sounds, and then release them.
Step 2: Program the primary arm closed limit.
1. Next, press and hold S2 and you will hear a long beep and the arm will begin to extend, opening the gate. Continue holding
the button down until the gate reaches the desired open position, and then release.
2. If you overshoot the desired open position, you can use S4 to reverse the gate.
3. Adjust as needed until you are totally satisfied with the open position. Then, press and hold S3 until the buzzer sounds, and
then release.
NOTE:
If you hear three short beeps in succession, that means that the programming mode has timed out and you will
need to enter the programming mode again. You do not have to start the positioning all over. If the open position is already
correct but you have timed out, press and hold S2 and S3 until the buzzer sounds, then release. Then, immediately press
and hold S3 until the buzzer sounds and then release.
Step 3: Enter the secondary arm limit programming mode.
With the power on for your control box, press and hold both the S3 and the S4 push buttons at the same time until LED 3 turns
on and the buzzer sounds, and then release them.
Step 4: Program the secondary arm open limit.
4. Next, press and hold S2 and you should hear a long beep and the arm will begin to extend, opening the gate. Keep holding the
button down until the gate reaches the desired open position, and then release.
5. If you overshoot the desired open position, you can use S4 to retract the arm in.
6. Adjust as needed until you are totally satisfied with the open position. Then, press and hold S3 until you the buzzer sounds,
and then release.
NOTE:
If you hear three short beeps in succession, that means that the programming mode has timed out and you will
need to enter the programming mode again. You do not have to start the positioning all over. If the open position is already
correct but you have timed out, press and hold S3 and S4 until the buzzer sounds, then release. Then, immediately press
and hold S3 until the buzzer sounds and then release.
CLOSED LIMIT PROGRAMMING - PUSH TO OPEN
572 Open Limit Programming
For Push-to-Open Applications
LED 1
LED 2
LED 3
S2
S3
S4
42
MM571W / MM572W Installation Instructions