As I told you guys befour the belt slows down when some one trys to jog on it but I tried without a person it "s running really fast so could you please do give me some advice about it?
The first place to look would be the condition of the walking belt and deck. If they are worn, dry or several years old the friction between the walking belt and deck might be causing the drive motor to slow down during your workout. If the walking belt and deck have never been replaced we would recommend starting with that repair since these are parts which will need to be replaced anyway during the life of the treadmill. if you continue to experience problems following this repair, there may be a problem with a weak drive motor or in some cases a motor control board which is failing to send the appropriate amount of current to the drive motor during a workout.
SOURCE: T3 - It slows down then speeds up, has mind of its own.
It sound like the Motor Control Board is failing call Life Fitness @ 1-800-351-3737 they will give you additional information and locate a servicer in your area
This condition is when the treadmill operates normally without a person on the belt and then slows down when someone steps on the
belt or when the treadmill operates normally for a given period of time
with someone on the belt then abruptly begins to slow down.
There are four typical causes for this problem (listed in order of our experience:
1) The walking belt and/or deck are worn. (85% of the time)
2) The walking belt and/or motor belt are too tight- if you have adjusted either recently. (8% of the time)
3) The motor has lost torque and needs brushes or has demagnetized. (5% of the time)
4) The controller is dropping output. (2% of the time
Test every step.
http://www.youtube.com/watch?v=38w4PkiWIBY&feature=related
http://www.youtube.com/watch?v=-oeXTKqWECw&feature=related
http://www.youtube.com/watch?v=GPI6dFJCUA4
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