Nortek Control Mighty Mule MM571W Installation Manual page 43

Step 1: Enter the secondary arm limit programming mode.
With the power on for your control box, press and hold both the S3 and the S4 buttons at the same time until LED 3 turns on and
the buzzer sounds, and then release them.
Step 2: Program the secondary arm closed limit.
1. Next, press and hold S2 and you will hear a long beep and the arm will begin to extend, closing the gate. Continue holding the
button down until the gate reaches the desired closed position, and then release.
2. If you overshoot the desired closed position, you can use S4 to reverse the gate.
3. Adjust as needed until you are totally satisfied with the closed 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 closed 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.
Step 3: 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 4: Program the primary arm closed limit.
4. Next, press and hold S2 and you will hear a long beep and the arm will begin to extend, closing the gate. Continue holding the
button down until the gate reaches the desired closed position, and then release.
5. If you overshoot the desired closed position, you can use S4 to reverse the gate.
6. Adjust as needed until you are totally satisfied with the closed 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 closed 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.
CLOSED LIMIT PROGRAMMING - PULL TO OPEN
572 Closed Limit Programming
For Pull-to-Open Applications
LED 1
LED 2
LED 3
S2
S3
S4
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MM571W / MM572W Installation Instructions