Chamberlain LiftMaster CSW24V Installation Manual page 15

INSTALLATION
STANDARD INSTALLATION ONLY
POSITION THE GATE BRACKET
NOTE: It may be necessary to attach horizontal reinforcement to the gate before
attaching the gate bracket.
1
Position the operator arm onto the output shaft so that the pin slides into the
slot.
2
Measure 1/4 the length of the gate from the hinge center.
3
Make sure the operator arm is level and tack weld the gate bracket in this
position. Use the set screws on the arm to temporarily hold the arm in place
while determining the correct measurements.
Tack weld
ADJUST THE OPERATOR ARM LENGTH
NOTE: The length of the arm can be adjusted if necessary. If adjusting the length,
ensure that both sections of the arm are adjusted proportionally. Use the set screws
on the arm to temporarily hold the arm in place while determining the correct
measurements.
1
Close the gate and measure the distance of the operator arm from the gate
bracket to the output shaft center. This distance is E.
2
Open the gate 90° (do not allow arms to scissor when open). Measure both
sections of the arm (D and C). The arm lengths are correct as long as C+D=E
(arm should be perpendicular to the gate in the open position as shown).
Proceed to PAGE 16.
2
1/4 of gate length
3
Set Screws
Gate Hinge
Center 1
TOP VIEW - CLOSED GATE
1
TOP VIEW - OPEN GATE
Gate Open
90°
Output Shaft
Set Screws
D
13
STANDARD INSTALLATION ONLY
Slot
Output Shaft
Pin
Set Screws
Output Shaft
E
2
C