Install Gate Bracket And Drive Chain - Chamberlain LiftMaster SL930 User Manual

INSTALL GATE BRACKET AND DRIVE CHAIN

THREADING THE CHAIN
Now that the operator is firmly attached, the chain may now be
connected to the gate and operator. Begin by threading the chain
through the sprockets. The sprockets come arranged so that the
chain may be threaded under the idler sprockets and over the
drive sprocket (Figure 8). Alternately, the chain may be threaded
over the idler sprockets and under the drive sprocket by moving
the idler sprockets to the alternate positions above.
NOTE: The cover will need to be modifi ed for the alternate arrange-
ment.
ATTACH CHAIN TO GATE
Attach the gate bracket to the gate using the round or square
U-bolts for round or square gate frames respectively (Figure 9).
Attach the chain to the gate brackets using the chain bolt and
master link as shown. If necessary, the chain may be easily
shortened using a chain breaker. Adjust the height of the gate
brackets until the chain is level and firmly tighten the U-bolts. For
round gate frames, it may be necessary to drive the self tapping
screw through the gate bracket and into the gate.
ADJUST LIMITS
The limit nuts need to be adjusted to cause the gate to stop in the
desired open and closed positions. These adjustments can be
roughly made before power has been hooked up by flipping the
manual release switch and pushing the gate manually (Figure 10).
Push the gate to the open position and adjust the limit nut to
press the limit switch in. The limit nuts can be turned after
pressing down on the guide plate. Push the gate closed and
adjust the other limit nut to press in the other limit switch.
CAUTION: Do not allow the limit nuts to travel past the switch as
this may damage the switches. When finished, make sure the
guide plate is properly engaged with the grooves on the limit
nuts.
I N S T A L L A T I O N
To prevent damage to the operator or gate, DO NOT drive the
limit (nuts) actuators on the shaft past their normal positions.
Figure 8
Figure 9
Master Link
Self Tapping
Screw
Figure 10
Manual Release
Circuit Breaker
Limit Switch
Limit Nut
11
WARNING
CAUTION CAUTION
Idler Sprocket
AVERTISSEMENT
ATTENTION
Drive Sprocket
ADVERTENCIA
PRECAUCIÓN
Guide Plate
Alternate Hole
Chain
Chain Bolt
Gate
Bracket
U-Bolt