Installation manual

19
Powering the System
IMPORTANT INFORMATION, please read:
The Mighty Mule 250 E-Z Gate Opener will not function until the transformer is installed
and the system is activated following the steps on pages 20-22.
The Mighty Mule 250 circuitry is designed to only operate with the transformer connected to
the opener and plugged into an AC outlet. The battery in the Mighty Mule 250 will provide
approximately 12-15 open and close cycles during a power outage. If the transformer is
disconnected or the AC power is interrupted for a prolonged period of time, the battery will
eventually drain down and the opener will not operate (this is normal). When the power is
restored it could take up two (2) hours to fully recharge the battery. Limited use may begin
with 15 minutes after AC power is restored.
The transformer is designed and intended for indoor use. If the transformer will be plugged
only into an outside electrical outlet, a weatherproof cover or housing (available at local
electrical supply stores) must be used.
The only wire acceptable for use with GTO transformers is; 16 gauge, dual conductor, multi-
stranded, direct burial, low voltage, PVC sheathed wire. This particular gauge enables the
transformer to provide an adequate charge through the control board to the battery at distances
up to 1000 ft.
DO NOT use telephone wire or solid core wire. Unlike multi-stranded wire, these types of
wire are inadequate for use with your gate opener system. Telephone wire and solid core wire
do not deliver enough voltage for your gate opener to function properly and will cause the
system to stop working.
Avoid splicing wires together. Splicing permits corrosion and seriously degrades the wire's
ability to carry an adequate current. If you must splice wires contact GTO Technical Service
at 1-800-543-1236.
Do not run more than 1000 feet of wire. If your gate is more than 1000 feet from an AC
power source, you will need to run an AC power source to the gate or within 1000 feet
Comply with all local codes.
Following these instructions carefully will assure that your Mighty Mule 250 will give you many years
of reliable service.