Nortek Security & Control MIGHTY MULE MM272 Installation Manual page 14

2. Check Direction of Gate Swing
The Mighty Mule 272 is designed for PULL-TO-OPEN
installations. PUSH-TO-OPEN installations require two
Push-To-Open brackets [FM148]. Push-to-Open Installation
Instructions begin on page 27.
3. Prepare the Gates
• Gates must be plumb, level, and swing freely on their
hinges.
• Wheels must NOT be attached to the gates.
The gates must move throughout their arcs without
•
binding or dragging on the ground.
• Note that gates over 250 lb. should have ball bearing hinges with grease fittings.
• The gate post should be secured in the ground with concrete so it will minimize twist or flex when the opener is activated.
• The addition of a horizontal or vertical cross member (if one is not already in place) to provide a stable area for mounting
the gate bracket is also important.
• Trench the driveway in order to lay PVC conduit for the second opener power cable (see illustration on
F
A – Level
B – Plumb
C – Free Swinging
Metal Gate Post
3/16" Drilled
Pilot Hole
Copper Single
Conductor Lug
12awg or Larger
3
MM272 Installation Instructions
A
B
E
C
Metal gate post
D – Posts Secured in Concrete
E – Centerline Mounting
D
F – Good Working Hinges
Ground
6 ft. deep
or more
Copper clad ground rod
(not included)
2 ft. or Less
from post
Copper ground
2 Inches or
rod clamp
Less above
ground
Ground
Your Property
Pull-To-Open
(arm retracts to open)
Gate Opener
Control Box
Gate Grounding
• Shorter wire (6 AWG) is better, 1 to 2 feet recommended.
• Bolt ring terminal at end of cable 4 - 6 inches above
ground level.
NOTE: No grounding system absolutely protects against
lightning strikes. If installed correctly, a grounding system
will help minimize damage to your gate opener.
Your Property
Push-To-Open
(arm extends to open)
page 6).
Horizontal Cross Member
Vertical Cross Member
(recommended)