Installation
2-12 42-02-2M01 A1
Standard Brake
1. Refer to the brake circuit drawing in your job prints to verify the configuration of the
braking circuit. (Brake control and brake adjustment resistors vary from job to job.)
• Familiarize yourself with the brake pick, hold, and drop time adjustments.
2. Measure the resistance through the brake coil on the lift machine.
3. Initially, adjust resistance across the Brake Drop Time resistor(s) to three times the
measured brake coil resistance.
This resistance determines brake drop time. Too little resistance causes the brake to remain
picked for a longer time, perhaps allowing rollback before stopping the car. Three times brake
coil resistance is usually a good starting point.
4. Connect the wires from the controller to the brake as shown in the job prints. Remember
that brake wires must not be routed in the same conduit with motor power or velocity
encoder wires.
Brake Mechanics
Check basic brake characteristics at this time:
• Ensure that the brake mechanism is clean and in good condition.
• Check that the brake lining makes good contact with the machine braking surface (at least
95% of the pad must be in contact with the braking surface).
• Check that the adjustment of the brake solenoid is not preventing the brake from fully
applying when it is not energized.
• Check to see that the spring adjustments are equal and are torqued to the manufacturer
recommended brake torque settings.
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