n this video we
show a malfunctioning treadmill. In the
video you can see how the motor starts and
sometimes a red light on the board lights up (current limit reached).
The defect may be
due to an incorrect calibration of the LIM trimmer on the board (too
low) or more likely by a demagnetization of the motor, which must
therefore be replaced.
Find spare parts
and assistance for treadmills on the website:
http://www.partsfortreadmill.com
In this second
video, we show abnormal behavior at a more sustained rate.
First of all, it
can be seen that the motor tends to go much
too fast, i.e. at a speed exceeding
the one set on the console.
Moreover, it is seen that as soon as a load is applied (the person
steps on), the motor slows down
significantly and the red light on the board turns on.
This is another
symptom of a demagnetizing engine.
The motor must be therefore replaced.
In this last
video, we see that changing the
setting of the IR trimmer causes sudden changes to the motor
rotation speed. The IR trimmer is the regulation of the minimum
power of the motor (to be set according to motor specification).
The technician
also tries to set the LIMIT trimmer.
LIMIT sets the max. current
to the motor. Clearly there is no change as this trimmer
comes into play as protection of the board when the motor
requires a lot of current.
The third SPEED
trimmer is in this configuration irrelevant because the speed is
controlled on this treadmill (and on many
others) directly from the console, so the control
board cannot make adjustments.
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