LiftMaster MEGA ARM / MEGA ARM TOWER MATDCBB Green Control Board V.6.4 or newe - Page 6

Installation, Tower Cabinet Dimensions, Concrete Pad, Anchors Mounting Unit, Conduits, Unit Dimensions - of power

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I N S TA L L AT I O N CONCRETE PAD The concrete pad for operator mounting should be approximately 24"x24"x24" in order to provide adequate weight and structure to insure proper and stable operation. Pad should be 6" above finished grade or even with top of curb if one is present. (NOTE: Pad should always extend below frost line in regions where ground will freeze.) ANCHORS (MOUNTING UNIT) Proper anchors for fastening operator to pad will be a 1/2"x6" wedge anchor patterned to match the mounting base of the unit. They should be installed with approximately 1 1/4" showing above concrete surface in order to allow for the 1/2" thick base plate as well as washers for leveling. NOTES: • For automotive use only, no motorcycles, bicycles or pedestrians. • Heater option MUST be used if temperature is 30°or below. • Heater option available for 120 Vac units only. See accessory page for heater part number. CONDUITS Conduits should be restricted to fit the 3 1/2"x3 1/2" opening in pedestal base and 10 1/4" x 8 1/4" for the tower base. Location on pad should be centered and spaced approximately 6" from edge of pad on drive way side (in order to get the most reach out of arm). Separate conduits to be included should be 120/230 Vac main power, low voltage control wiring and one or two extra for loop sensor leads. Conduit size should be limited to 1/2" when possible to reduce crowding if more than four are needed. All conduits must be UL approved. UNIT DIMENSIONS 15-3/4" 3-1/2" 13-1/2" 20-1/4" 41-1/2" 20-1/4" 21-1/2" 41-1/2" 36-1/2" 5" 4" 8" 17-1/2" 9" Pad (24"x24") 12" 8" 5-1/2" 2" Center Line These Dimensions Will Center the Operator on the Pad 3-1/2" 3-1/2" Inside Post 5-1/2" 8" 9" TOWER CABINET DIMENSIONS 12" Pedestal Foot Print of Base on Pad 6" 3-1/4" 13-1/2" 3-1/2" Pad (24" x 24" x 24") Gate Arm Bracket 7-1/8" 7-1/8" 3-1/2" 42" 10-1/4" 42" 36-1/2" 9-7/8" 8-1/4" Open Area In Base For Conduit 13-1/2" 14-1/4" 13-1/2" Side View 12-1/4" Door 14-1/4" Tower Foot Print of Base on Pad 6

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6
CONCRETE PAD
The concrete pad for operator mounting should be approximately
24"x24"x24"
in order to provide adequate weight and structure to
insure proper and stable operation. Pad should be 6" above
finished grade or even with top of curb if one is present.
(
NOTE:
Pad should always extend below frost line in regions where
ground will freeze.)
ANCHORS (MOUNTING UNIT)
Proper anchors for fastening operator to pad will be a 1/2"x6"
wedge anchor patterned to match the mounting base of
the unit.
They should be installed with approximately 1 1/4" showing above
concrete surface in order to allow for the 1/2" thick base plate as
well as washers for leveling.
NOTES:
• For automotive use only, no motorcycles, bicycles or
pedestrians.
• Heater option MUST be used if temperature is 30°or below.
• Heater option available for 120 Vac units only. See accessory
page for heater part number.
CONDUITS
Conduits should be restricted to fit the 3 1/2"x3 1/2" opening in
pedestal base and 10 1/4" x 8 1/4" for the tower base. Location on
pad should be centered and spaced approximately 6" from edge
of pad on drive way side (in order to get the most reach out of
arm). Separate conduits to be included should be 120/230 Vac
main power, low voltage control wiring and one or two extra for
loop sensor leads. Conduit size should be limited to 1/2" when
possible to reduce crowding if more than four are needed. All
conduits must be UL approved.
TOWER CABINET DIMENSIONS
INSTALLATION
UNIT DIMENSIONS
41-1/2"
20-1/4"
15-3/4"
9"
41-1/2"
20-1/4"
8"
13-1/2"
21-1/2"
3-1/2"
36-1/2"
17-1/2"
4"
5"
Pedestal Foot Print of Base on Pad
Inside Post
3-1/4"
6"
5-1/2"
3-1/2"
3-1/2"
12"
Center Line
These Dimensions Will Center
the Operator on the Pad
Pad (24"x24")
Pad (24" x 24" x 24")
8"
8"
9"
12"
2"
5-1/2"
9-7/8"
13-1/2"
3-1/2"
8-1/4"
10-1/4"
Open Area In
Base For Conduit
7-1/8"
Door
14-1/4"
12-1/4"
Tower Foot Print of Base on Pad
7-1/8"
Gate Arm Bracket
42"
Side View
13-1/2"
14-1/4"
36-1/2"
42"
13-1/2"
3-1/2"