BRAKE ADJUSTMENT
The solenoid brake on the SL operator is adjusted
at the factory. If it appears that the brake needs
adjustment due to excessive coasting of the door
proceed as follows:
1. Turn off power to the operator.
2. Loosen lock nut.
3. Tighten adjustment nut to increase spring
pressure.
4. Secure adjustment nut with lock nut.
5. Turn on power and test operator.
6. If more braking is required, repeat steps 1
through 5.
7. If solenoid does not pull in or makes a buzzing
sound when fully retracted, the brake spring is
too tight.
ALWAYS DISCONNECT POWER TO THE
OPERATOR BEFORE SERVICING,
CONNECTING ACCESSORY DEVICES OR
MAKING ADJUSTMENTS.
WARNING
19
OPERATION AND ADJUSTMENT INSTRUCTIONS
IMPROPER ADJUSTMENT OF CLUTCH
SETTING COULD CAUSE ENTRAPMENT,
INJURY OR DEATH. SET CLUTCH ADJUSTMENT
FOR JUST ENOUGH FORCE TO OPERATE THE
DOOR RELIABLY, BUT NO STRONGER. Contact
a service professional to correct any binding,
sticking or other door problems. DO NOT OVER-
ADJUST CLUTCH SETTING TO COMPENSATE
FOR A POORLY WORKING DOOR.
WARNING
SOLENOID
MOTOR
BRAKE ADJUSTMENT BOLT
LOCK NUT
ADJUSTMENT NUT
TURN CLOCKWISE TO INCREASE DRIVE FORCE.
TO ADJUST REMOVE COTTER PIN AND TURN NUT
1/4 TURN AT A TIME UNTIL DOOR OPENS AND
CLOSES SMOOTHLY. TO MAINTAIN PROTECTION OF
EQUIPMENT DO NOT OVER TIGHTEN. REPLACE
COTTER PIN TO SECURE ADJUSTMENT.
CLUTCH ADJUSTMENT
FIGURE 15
Summary of Contents for SL Series
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