Mighty Mule MM-SL2000B - Manual (Page 18)

6
SL-2000B Instruction Manual 04.26.12
Determining the Mounting Position and Mounting the Operator
Step 2
Install chain brackets at each end of the gate on the inside
(operator side) of the gate (see Overview Illustration, page.
4). Position the tops of chain brackets no more than 6” above
the bottom corners of the gate frame and secure with U-bolts
(see Illustration B). The chain brackets will work on gate
frames 1 3 /
4
” to 2 1 /
2
” in diameter or square tube gates. The
U-bolts provided will work on 2” diameter pipe. Larger gate
sizes will require larger U-bolts.
Step 4
Find the center point between the two roller/fence posts (see
Illustration D). This should coincide with the position of the
center point of the operator. Dig a hole approximately 12” x 28”
wide x 28” deep. Place the operator in the hole on its legs and
position the bottom idler sprockets on the top of the string and
level the unit (see Illustration E). Make sure operator is level and
plumb. With the unit level and in place, pour the concrete and
let set for 24 hours before proceeding to the next step.
BEFORE POURING CONCRETE: 1] Make sure operator is
centered between roller posts and aligned with string; and,
2] Determine method of installing conduit for wiring (see page 5)!
Step 3
Insert a quick release
pin into the center slot
in each of the chain
brackets (see Illustration C). Tie a string to the end of each quick
release pin so that the string is tight between the two chain
brackets (the string will be used to align the operator). The string
should be 7”-10” from the ground (see Illustration B). The chain
brackets can be adjusted up or down on the gate to achieve the
proper height. The goal here is to set the height of the operator
so that when the housing is in place it will clear the ground by 1”
to 4” (see Illustration E).
Quick Release Pin
String
Chain Bracket
String
Chain Sprockets
Operator
(centered between post)
Roller
Gate
Fence Post
Fence Post
Center point between posts
Roller
CL
Sprockets
String 7" to 10"
above ground
Housing
!
!
Level
1" to 4" clearance
Ground Level
position bracket so that string
will be approximately 7" to 10"
from ground level at the point where
the operator will be mounted
Quick Release Pin
String
Chain Bracket
Illustration B
Illustration C
Illustration D
Illustration E