Gate arms+ Liftmaster mega arm series User manual

FOLDARM180

LIFTMASTER MEGA ARM SERIES

INSTALL

MANUAL

Patent Pending 2019

IMPORTANT SAFETY INFORMATION

IMPORTANT

Please read all instructions and safety information prior to

attempting installation.

Always disconnect 110V and 12V power from gate operator

equipment prior to touching any wiring or installing anything.

Serious injury could occur if power is not disconnected prior

to installation.

BE HIGHLY CAUTIOUS OF OVERHEAD POWER LINES

Ask for assistance from another person to install gate arms.

Removal and replacement of the gate arm pole is much sim-

pler with two people.

Always use appropriate PPE during installation including

safety glasses, gloves and hearing protection as needed.

Install as directed. GateArms+ LED Barrier Arms and LED

Controllers are intended for use as described herein and by

the product literature available for download at

www.GateArms.com

Any misuse, alteration, or modification of GateArms+

branded products beyond what is described in the available

product literature will void all warranties.

UNBOX-GET ORGANIZED

Tools Needed (not included):

NOTE: First time installations will require an INSTKIT-GATE,

(not included)

1/2" Drill Bit

[3x] Offset Plate Bolt Kit [1x] Articulating Arm Kit

[1x] Offset Plate

Pencil

Level Tool

Measuring Tape

Hand Drill

1/4" Drill Bit

3/8”

Drill Bit

REMOVE EXISTING ARM

Is another brand of articulating arm installed?

If yes, remove it now.

It should look like this.

MARK & DRILL A HOLE 3” BELOW MOTOR SHAFT

3.1 Make a mark 3” below the center of the motor

shaft. If there is a problem using that spot, you can

make your mark between 2” to 3 ½” below the

center of the motor shaft.

3.2 Drill a ½” hole at

the site of the mark,

being careful not to

damage anything on the

inside of the operator.

Step 3.1

Step 3.2

POSITION THE OFFSET PLATE

Place offset plate on operator with the top hole over your

new hole.



The curved neck should be facing away from traffic.



For mounting purposes, we recommend using the

holes indicated in Figure 1. If those holes will not work

for you, you can also use the layout shown in Figure 2.



Use a pencil or marker

to mark where you will

drill, see Figure 3.



Use a level to make

everything straight.

Figure 1

Figure 2

Figure 3

DRILL REMAINING TWO HOLES.



Drill out the holes you marked in the previous step.

INSTALL THE 3 OFFSET PLATE BOLTS

NOTE: If the hole you made is not aligned with the offset

plate, DO NOT force the bolt into the hole!

Make the hole bigger or make a new hole.

Step 5

Step 6

INSERT ARM BOLTS & WASHERS THROUGH BRACKET

NOTE: The next few steps will require assistance.

INSTALL BARRIER ARM ONTO BRACKET

NOTE: Use steel nuts on arm bracket bolts.

Step 7

Use steel nuts

Step 8

MAKE VERTICAL MARK ON OFFSET PLATE

With a helper holding the outer arm up a little higher than

the horizontal position,

make a vertical mark on the offset plate with a pencil

through the hole of the curved end of the arm’s linkage as

shown below.

Hold this end up

Make vertical mark here

10.

RAISE BARRIER ARM UP

 Open the arm fully. Help the

barrier arm while it goes up.

 Gently squeeze the outer arm

and the transmission system

together.

11.

MAKE HORIZONTAL MARK ON

OFFSET PLATE

While gently squeezing the arm

segments together, make another

mark on the offset plate with a

pencil, this time horizontally.

Step 10

Step 11

12.

DRILL HOLE IN OFFSET PLATE

Using a 3/8” drill bit, make a hole at the intersection of the

two pencil marks.

13.

INSTALL THE CURVED END OF THE ARM LINKAGE

ONTO THE OFFSET PLATE AS SHOWN BELOW.

Step 12

14.

INSTALL ADJUSTMENTS: FIX WOBBLING

14.1 To improve wobble in the vertical position, carefully

tighten this screw.

NOTE: This must not be too tight or the arm

segments will stick together when open. This could

damage these parts.

14.2 To improve wobble in the horizontal position, carefully

tighten the bolt indicated here.

NOTE: This must not be too tight or it may interfere

with the elbow motion or cause excess wear.

Step 14.1

Step 14.2

15.

LENGTH ADJUSTMENTS

Your arm should be perfectly

horizontal when down. Is your

arm sagging? If so, you must

tighten the arm.

To make quick adjustments,

loosen the arm bolts in the

bracket and slide the arm left

or right to tighten or loosen.

You can make fine adjustments in

1/16” increments by changing the

position of some bolts. See the

next few pages for instructions.