LiftMaster SL575 Heavy-Duty Commercial Slide Gate Operator - Manual (Page 25)

25
SOLENOID ACTUATED BRAKE
The brake is adjusted at the factory and should not need
additional adjustments for the life of the friction pad.
Replace friction pads when necessary. Refer to the illustration for
identification of components for the solenoid type brake system.
FRICTION CLUTCH
1. Remove cotter pin from nut on the clutch shaft.
2. Back off clutch nut until there is very little tension on the
clutch spring.
3. Tighten clutch nut gradually until there is just enough tension
to permit the operator to move the gate smoothly but to allow
the clutch to slip if the gate is obstructed. When the clutch is
properly adjusted, it should generally be possible to stop the
gate during travel.
4. Reinstall cotter pin.
The friction clutch system is not an automatic reversing device. It
only serves to minimize damage to the gate operator and gate,
and to help minimize vehicle damage. If you need an external
automatic obstruction sensing device, items such as gate edges
and photo beams are available.
CONTROL BOARD PROGRAMMING AND FEATURES
MOTOR LEARN FUNCTION (FORCE PROFILE)
This function is preprogrammed at factory. If either board or
motor is replaced, the control board will need to be
reprogrammed to “LEARN” the specific motor RPM profile of
your operator, the red button “S3” is provided for this. This is
important for accurate force control. Failure to do so may result
in improper and unsafe operation.
NOTE: Motor Learn must be performed in stand alone mode.
1. Ensure that the operator remains attached to the gate
throughout the entire process.
2. Press the motor learn button. The yellow LED should start to
flash rapidly.
3. Push and hold down either the open or the close buttons. The
motor will run for a few seconds and then stop. If the LED
goes out the motor is learned. If the unit activates a limit
before completing the learn or some other error occurs the
LED will go back to on continuously. If this happens try
learning while running in the opposite direction.
To reduce the risk of SEVERE INJURY or DEATH:
• Disconnect power BEFORE performing ANY adjustments.
ATTENTION
AVERTISSEMENT
AVERTISSEMENT
AVERTISSEMENT
WARNING WARNING
CAUTION
WARNING
WARNING
PRECAUCIÓN ADVERTENCIA
ADVERTENCIA ADVERTENCIA
Motor
Learn
Button (S3)
Friction Pads
Solenoid
Release Lever
Plate
Assembly
Clutch Pad
Clutch Plate
Clutch Pulley
Washer
Spring
Cotter pin
Adjusting Nut