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Garage Door Technician
Garage Door Troubleshooting & Diagnostics (Canada)
Commercial & Advanced Diagnostics
Knowledge Check
Commercial & Advanced Diagnostics
Knowledge Check
Knowledge Check
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What is the purpose of a brake system on a commercial jackshaft operator?
A
To prevent the remote from activating accidentally
B
To reduce energy consumption
C
To hold the door in position when the motor stops, preventing drift or fall
D
To slow the door for quiet operation
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