Question about Proform XP Weight Loss 620 Treadmill

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Proform 620 Treadmill belt stops

Hi, My Proform 620 belt stops whenever it wants to. If you step off. It will slowly speed back up to speed. I have connected a volt meter between the red and the black wires. Set volt meter on Vac. Speed 1- 33.7 volts Speed 5- 78.3 volts Speed 10- 66.5 volts If I intentionally staul the belt, the voltage drops to 14 volts Drive motor belt and actual TM walking belt are tight. Any ideas would be greatly appreciated. Thanks Dave

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  • Dave Jan 08, 2013

    Hi Taran_2005,

  • Dave Jan 08, 2013

    Walk belt has been readjusted. Tracking well. I shouldn't be able to stall the motor out. Correct? I believe the motor has lost torgue. What do you think?

  • Dave Mar 20, 2013

    Update....... I finally got around to more troubleshooting. Taran_2005 you were correct in the walking belt being wornout. I replaced the WB and drive belt and adjusted the tension on the WB and it works fine. Fixed my TM problem!!!

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Posted on Jan 02, 2017

  • 95 Answers

SOURCE: Treadmil stops or slows down upon walking.

Check both belts to be sure they are adjusted and not slipping.Check the underside of the walk belt to see if it feels frayed in the center as compared to the edges, the center always wears more than the edges a really worn belt must be replaced. if it is nor worn there is a wax lubricant for proform treadmills that can be purchased at retail stores that sell treadmills.Sears, dicks sporting goods and also treadmilldoctor.com are good places to buy it.

Posted on Aug 01, 2009

  • 3 Answers

SOURCE: Treadmill will not maintain the correct speed.

your belt may not be tight enough and it is slipping which can cause it to move faster than the motor

Posted on Aug 26, 2009

  • 1 Answer

SOURCE: Proform 520

Not sure what's happened here. treadmill won't turn on when red key is inserted. checked electrical plug to make sure it worked. I couldn't see that there's anything wrong with the red key. Have any ideas?

Posted on Sep 12, 2009

taran_2005
  • 10515 Answers

SOURCE: Proform 765 treadmill slows down when step on. Do

Hi,

More likely time to replace the belt. Let me provide you with all the information you need. This information is already there on many websites.

BELT LOSES POWER
(Bogs Down or is Sluggish) 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)
Walking Belt is Worn:
The only certain way to test for a worn walking belt is to take a DC amp draw (if you have a DC treadmill) or an AC draw (for AC). Trying to look at the belt or a feel test is highly unreliable. Better tests, if you lack a DC ammeter (they are expensive for a good one), are a coast test or an incline test. To test the deck, go back to the Troubleshooting section and download the belt and deck inspections instructions. The coast test is to get on the treadmill as the lowest incline setting and walk on the treadmill at 3 MPH. Pull the safety key and it should take you 2-3 full steps to stop (this is a general rule…some like a few Tunturi models stop on a dime even with a healthy belt but most this tests works well upon). Fewer steps indicate high friction.
The incline test is to put the treadmill at max incline and walk on it at 3 MPH. If the treadmill operates normally at max incline but bogs down at minimum incline, replace the walking belt. Gravity takes over for the drive system eliminating the friction problem. On some heavily worn walking belts, this test will not eliminate the problem.
Walking Belt/Motor Belt too Tight:
If you have adjusted the walking belt or motor belt recently, check for this problem. When the belts start slipping, some people just crank down the belts and on treadmills, tighter is not necessarily better. The
tighter the belts, the more the drive system has to work to keep everything moving. You should be able to lift the walking belt (with the treadmill unplugged) in the center of the treadmill about 3” without straining. Tighter belts should be loosen but make sure you don’t create a dangerous slipping situation by loosening.
The motor belt (with the treadmill unplugged) should be able to be turned by hand to almost a 90 degree angle from its normal operating position. Loosen the belt if too tight. Make sure to test for slipping and if it does with the proper tension, replace the motor belt.
Needs Brushes / Demagnetized Motor:
Typically when we find a motor that has lost torque; it needs a new set of motor brushes. Typically we can make brushes for almost any motor if we don’t already stock them. Motor demagnetization is not that common but it does happen and it is normally easy to diagnose. If you have confirmed the belt and/or deck is not worn and the belts aren’t too tight, you can test for a motor torque problem. DO NOT USE YOUR HAND OR ANY OTHER BODY PART TO IMPEDE THE MOTOR…YOU WILL LIKELY LOSE YOUR BODY PART IN THE PROCESS IF THE MOTOR IS GOOD. The step to test for the motor is to use a foreign object preferably on a long shaft. First determine the direction of the motor spin (most have directional movement printed on the motor tag), then apply pressure with an object with downward pressure on the flywheel in the direction the flywheel is turning (do not attempt to put force against the rotating direction of the flywheel as you can easily injure yourself). If you can slow the motor, typically you need brush replacement.
To test for demagnetization, the motor must be disassembled. Once you have the motor retaining bolts removed, remove the motor core by sliding it out of the end of the housing. If the magnets pull the core against the housing and it is difficult to remove, the magnets are good. If the magnets do not attract the core, the motor has to be replaced.
Controller:
This is the most uncommon of the causes. Typically replacing a controller in this situation will not solve the underlying problem and then you will end up replacing a belt as well as a control. Normally if a control is dropping output, it will do it with a person on the belt or not. Tests of DC output dropping is normal in many controls since they have a current limiter which will automatically drop output to prevent burning up the board. This is best diagnosed by eliminating the other possible problems first. If you are left with the control as the cause, replace the control.

The site :-

http://www.treadmilldoctor.com/Treadmill-Belt-Bogs-Down

Any further assistance, let me know.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Oct 10, 2009

  • 3230 Answers

SOURCE: The walking belt on my

Hi there,

You can usually find the screws to tighten the belt at the back of the machine - but be careful not to tighten too much. A quarter turn may be all that is needed. A gentle tug will get the belt back into alignment if it is askew. Remember that if you have trouble tightening or realigning the belt, you should seek advice from the manufacturer or the fitness store where you bought your treadmill exercise equipment.

Most new treadmill machines do not require belt lubrication, and therefore you should only lubricate your belt if the manufacturer specifically recommends it. Most of the manufacturers who do recommend regular lubrication sell kits with instructions and all the equipment you need to make quick work of the task.

Post further comments for more help or information.....

Good Luck!!

Thanks

Posted on Dec 04, 2009

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1 Answer

Tredmill stop when walking


Hi,
Try to tension the Walking belt. If the walking belt is not in tension then the belt will stop when you step on it. Watch the video to find how to tension the walking belt. Every treadmill follows the same procedure.

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hi,
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hi there
it could be 2 things of this problem
1 walking belt slips easy ti fix
1th step; put treadmill in speed of 4 mph and step on side and try with one leg to stop it (be carefull) if you see walking belt stops with align key give more tension from the back of treadmill rear rollers by turning both bolts clockwise same degree with small turns till stops

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Treadmill slows suddenly and when i step off it starts again. only happens to me.


hi it sounds like the belt is too loose, i had the same problem when the wife uses the treadmill works perfect, untill i step on it really slows down and once i step off it runs fine. so i tightened the belt just a fraction and now works fine. check your instruction manuel it will explain how to do this. normally its two screws at the backend of the roller. hope i have helped.

Nov 15, 2010 | Proform XP Weight Loss 620 Treadmill

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My Proform XP 650e Treadmill starts and suddenly stops. The belt turns real fast then it suddenly shuts down like the power was turned off.


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Jun 28, 2010 | Proform XP Weight Loss 620 Treadmill

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The walking belt on my Proform 620 weight loss treadmill is very slick, almost dangerous


Hi there,

You can usually find the screws to tighten the belt at the back of the machine - but be careful not to tighten too much. A quarter turn may be all that is needed. A gentle tug will get the belt back into alignment if it is askew. Remember that if you have trouble tightening or realigning the belt, you should seek advice from the manufacturer or the fitness store where you bought your treadmill exercise equipment.

Most new treadmill machines do not require belt lubrication, and therefore you should only lubricate your belt if the manufacturer specifically recommends it. Most of the manufacturers who do recommend regular lubrication sell kits with instructions and all the equipment you need to make quick work of the task.

Post further comments for more help or information.....

Good Luck!!

Thanks

Dec 04, 2009 | Proform XP Weight Loss 620 Treadmill

2 Answers

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Mar 25, 2009 | Proform XP Weight Loss 620 Treadmill

1 Answer

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To tighten the belt, start by locating the two bolts that adjust the rear roller (one on each side of the unit in the back). Run the unit at about 3 mph. Tighten the bolts a 1/4 turn at a time. Make sure that what you do to one side, you MUST do to the other side or the belt will get off center. After you tighten it 1/4 turn, check the belt to see if it is still slipping. If it is then tighten the belt 1/4 turn again. Continue until the belt does not slip, but do not tighten the bolts more than 2 full turns.

Feb 22, 2009 | Proform XP Weight Loss 620 Treadmill

2 Answers

Treadmill will not maintain the correct speed.


You can get a book by calling 1-800-999-3756. The treadmill you are usine in a cheaper model. the motors on those units are not that strong. when you incline your unit gravity make the belt move faster. Remember incline put a lot of pressure on you lower spine. This can cause injury for some.

Jan 29, 2009 | Proform XP Weight Loss 620 Treadmill

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