Nortek Control Mighty Mule MM571W Installation Manual page 20

T
THE OPERATOR MUST BE INSTALLED WHILE FULLY RETRACTED, WITH THE GATE IN THE OPEN POSITION.
Your Property
Step 3
● With the gate in the OPEN position,
use clamps to secure the operator
to the gate post and center cross
member of the gate.
● Ensure that the operator is level.
● With the operator arm temporarily
secured to the gate, check to
ensure there is at least 2 inches
of clearance between the operator
arm and gate. (See illustration in
Step 4 below).
Step 4
● Disconnect the operator arm from the
gate bracket.
● While supporting the operator, swing
the gate and operator to the closed
position.
● Check for recommended clearances
and binding as shown. Ensure the
rear mount of the operator does
not press up against the post pivot
bracket assembly in the closed
position as indicated in the diagram
to the right. Note the circled portion of
the diagram.
● Ensure that the necessary arm /
stroke does not exceed 20 inches.
● Make adjustments to the
mounting brackets to achieve the
recommended clearances. Improper
clearance will cause undue stress on
the operator and may cause physical
damage and/or strain the motor.
TIP: Turning the pivot bracket over
gives more hole alignment options for
the gate post pivot bracket assembly.
MM571W / MM572W Installation Instructions
PULL-TO-OPEN OPERATOR MOUNTING
2" Min.
WARNING: ENSURE THE REAR MOUNT DOES NOT MAKE CONTACT WITH THE
POST-BRACKET ASSEMBLY DURING ANY POINT OF THE GATE TRAVEL.
2" Min. - Pinch-Point Clearance
1
Open
Position
17
N
Top View
20" MAX.
2
Closed
Position