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Pulley Assembly

Pressure Plate

Release Lever

Sleeve 

Brake Mounting Plate

Solenoid Cover

Brake Solenoid

Screw #10-32 x 1/2"

Stud #10-32

INSTALLATION

REMOVE EXISTING BRAKE

1. Disconnect 

power 

to 

operator.

2.  Loosen the motor and remove the belt.

3.   Remove the brake pressure plate, brake release lever and 

pulley assembly.

4. Remove 

the 

solenoid 

cover.

5. Unplug 

wires 

from 

solenoid.

6.  Remove conduit from hole in brake mounting plate.

7. Remove 

brake 

mounting 

plate.

INSTALL NEW BRAKE

1.   Remove the solenoid cover, pressure plate, lever and pulley 

from the brake in the new kit.

2.   Attach brake mounting plate to motor with the four #10-32 

nuts.

3.   Feed wires through the hole in the brake mounting plate. 

Reattach the conduit and connect wires to brake solenoid.

4.   Set the height of the disk/pulley. The optimal distance from 

brake mounting plate to disk is 0.2" for brake performance. 
Setting this gap will also align the pulley.

5.  Assemble the pressure plate and lever arm.

6.   Ensure the brake releases by depressing the solenoid by 

hand. Also, check that brake pads are in contact with disk in 
free state.

7.   If adjustments are required, return to step 4 and move the 

disk as needed.

8. Re-attach 

the 

belt.

9.   Tension the belt by repositioning the motor, then tighten the 

motor mounting bolts.

10. Reconnect power to operator.

LOGIC 5.0 APT BRAKE KIT 

INSTRUCTIONS

K76-37077

To prevent possible SERIOUS INJURY or DEATH, disconnect 
electric power to operator BEFORE installing.
ALL installations and electrical connections MUST be made by 
a trained door systems technician.

Nut

Sleeve

Brake Mounting Plate

BRAKE MOUNTING PLATE SPACING

BRAKE SOLENOID TO CONNECTOR

120-240 VAC BRAKE SOLENOID

ORIENTATION KEY

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