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ESC user manual: high power system for RC model can be very dangerous . manual assumes no responsibility for personal injury, property damage or consequential losses resulting from the product .

ESC is specially designed for multi-rotors: 1. Start-up Protection: ESC will shut down the motor when it fails to start the motor normally in 2 seconds by increasing the throttle value . 2. Throttle Signal Loss Protection: When the ESC detects loss of signal for over 0.25 second, it will cut off the output immediately . 3. Motor Lock-up: if the motor lock-up is detected, it'll try to restart the motor (thrice) to resume its output .

Upon installing a new Flame ESC or radio controller, please calibrate the throttle range. If the throttle stick is not fully depressed at the minimum position, the motor may produce brief beeping sounds.

The motor's beeping indicates it wasn't on the correct bottom setting to start rapidly, as the throttle range was too narrow. To resolve this, recalibrate the throttle position or check that the throttle wire has been properly connected to the channel on the receiver.