Mighty Mule MM402 - Manual (Page 12)

2 Mighty Mule FM402 Installation Instructions rev 082211
1. Determine Charging Options for Battery: Transformer OR Solar
NEVER USE TRANSFORMER AND SOLAR PANEL(S) AT THE SAME TIME!
It will damage the control board!
IMPORTANT
• The battery charge is maintained by the 14 Volt transformer included OR optional solar panel(s). The transformer
OR solar panel is connected to the control board using low voltage, 16 gauge, dual conductor, stranded, direct
burial wire [RB509] (page 26).
• All low voltage wire used with the Mighty Mule Gate Opener must be 16 gauge dual conductor, stranded, direct
burial wire.
• The transformer is intended for indoor use. If the transformer can only be plugged into an outside electrical
outlet, a weatherproof cover or housing must be used.
• If your gate is more than 1000' from an AC power source, you will need to use a solar panel charging kit
( minimum 10 watts). Refer to the Solar Panels and Gate Activity Chart below.
Solar Panel and Gate Activity Chart
The table and map illustrate the
maximum number of gate cycles
to expect per day in a particular
area when using from 10 to 20
watts of solar charging power.
The figures shown are for winter (minimum
sunlight) and do not account for the use of
any accessory items.
Accessories connected to your system
will draw additional power from the
battery and will require additional solar
panels.
NOTE: UP to 250 ft. of dual conductor, 16
guage, stranded wire may be used to allow
installation of solar panels in direct sunlight.
See page 26:
10 Watt Solar Panel [FM123]
5 Watt Solar Panel [FM121]
Dual Gate
Winter Ratings
Zone 1 Zone 2 Zone 3
10 Watts 8 16 26
15 Watts 11 20 30
20 Watts 14 28 38
Before You Begin
Zone 3
Zone 1
Zone 2
Zone 3
Zone 3
Zone 3