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MM271 Installation Instructions
MM271 Installation Instructions
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● Monthly, test the obstruction and entrapment protection systems.
● Monthly, service the gate operator (make sure the power switch is OFF). Clean extended operator arm with a soft,
dry clean cloth.
● On all gates weighing 250 lb. or more, routinely grease the ball bearing hinges at least 4 times a year; more
frequently if the gates are near a coastal area.
● Monthly, turn off the power switch and disconnect the Mighty Mule and move the gate to make sure the gate is
moving freely without sticking or binding. Lubricate the hinges or repair the gate as required before reattaching
the Mighty Mule.
● Monthly, check the gate system for potentially entrapments from new landscaping or construction. Eliminate or
guard as required.
● Monthly, check that the warning signs are mounted on each side of the gate and clearly visible. Replace the signs
if they are missing or damaged.
● Replace batteries every 2-3 years and properly recycle old batteries.
AUDIBLE FEEDBACK
Symptom
Diagnosis
Check
1 or more short beeps upon
power up
Circuit Board Powered
Up & Ready
h
Normal Operation
Rapid beeping
h
No battery preset
h
Circuit Board Senses an
Obstruction
h
Blown fuse in battery
harness cable
h
Path of Gate
h
Gate for Level and Plumb
h
Stall Force Adjustment
h
Disconnect Obstruction Detection Devices
h
Battery connections
h
Check fuse
1 beep every 20 seconds off
Low Battery Condition
h
Transformer or Solar Panel Voltage
h
Charge the battery if solar conditions have been poor
h
Battery Harness Connections
h
Battery Under Load
2 beeps every 2 seconds
Position sensor is short circuit.
h
Arm Power Cable for Damage
1 beep every 2 seconds off
Position sensor is open circuit.
h
Arm Power Cable for Damage
1 beep when attempting to
run the gate
Blown fuse
Battery is low or damaged
Loose Connection
h
Check and replace fuse
h
Test battery voltage
h
Check all connections
Additional information can be found by contacting Nortek Security and Control.
If your gate operator does not function properly after it is installed, use this guide before calling the Nortek
Security and Control Service Department.
Troubleshooting Guide
Maintenance
VISUAL FEEDBACK
Symptom
Diagnosis
Check
Power (green) ON
AC or Solar Power Present
Normal Operation
Power (green) OFF
No AC or Solar Power
Transformer:
h
Breaker or GFI
h
Power at AC outlet.
h
Output of Transformer.
h
Voltage on wire at 18 VAC Input
Solar:
h
Solar Panel Wires Reversed
h
Weather
h
Solar Panel Placement
h
Output of Solar Panel
h
Voltage on wire at Solar Input
Status (amber)
Receiving RF Signal
h
Check for a stuck transmitter
h
Receiving RF interference
