How to fix a Treadmill: Practical advice for DIY repairs

Anyone who has a treadmill will have to repair or fix it sooner or later. You may be having trouble with the wear-resistant platform, but it's nothing serious. You can easily learn how to adjust a treadmill by yourself.

Fixing a treadmill, most common things to do:

Check the power supply. Make sure your treadmill is getting proper power supply. Problems with the other home appliances, the sockets, or the use of extension or adapters may diminish the effectiveness of your treadmill, or even damage the electronic control card.

For safety reasons, be sure to turn off power before performing the following steps.

Clean the treadmill. Make sure that there is no dirt or any other accumulation on the treadmill belt, in the motor housing, or the bottom of the rollers. Dirt can cause friction of the belt and will slow down or cause problems during walking and running on the treadmill. When the treadmill is clean, you can turn on the power and check whether the dirt removal has resolved the problem. Do not forget to clean the deck and the belt with alcohol, removing all dirt and lubricant residues and using the new 100% silicone lubricant on the table.

Examine the speed sensor. Check the speed sensor, you can accumulate dust that annoys speed reading, causing various faults during use. Anything that may have accumulated on or around the speed sensor must be removed. A tapering motion or the appearance of an error (E1, E2) a few seconds after the belt is started may be attributed to the sensor covered by dirty, or defective.

Replace the belt. Follow the manufacturer's instructions or those on our blog to remove the motor cover. Loosen the back of the belt with the screwdriver or the keys. Mark the position of the front roller so that the new belt can easily be re-aligned. Pull the belt from the treadmill deck, then put the new belt on the treadmill. Make sure you buy a suitable belt for the treadmill and ensure its good quality. Do not strain too much. Follow the directions of the manufacturer’s booklet or those on our blog.

If you smell burning, clean everything, adjust the belt (reducing the tension as low as possible) and lubricate the deck. If, after doing so, there is still a burning odor, unplug the treadmill and stop using it until the problem is solved. The motor is overheating, causing the burning smell. It may be that the belt is misaligned or replaced or the deck is chipped. Do not continue training with the risk of causing expensive damage to the motor and / or the treadmill control board.

Replace the motor / board. After identifying the failures, this could be the only solution. Follow the step-by-step manual or the directions on our blog. Put all the small parts of your treadmill in a container, so you cannot lose them and you can reassemble all the pieces more easily. This may not be within the reach of everyone. If you are in doubt, contact a qualified technician and never carry out operations without taking appropriate electrical precautions.

After any intervention you should thoroughly test the smooth operation of the treadmill, first without anyone, up to max. speed, then with a test session. During testing, constantly monitor motor and board temperature, if it rises, it may indicate some mounting error or need of further service.

Never use the treadmill with children, people with disabilities or the elderly as long as you are not sure of the perfect working order of the machine. http://www.partsfortreadmill.com/

How does a DC treadmill motor work? How to avoid treadmill problems?

To avoid problems, it is important to

• purchase treadmills with motors of high quality and appropriate dimensions,
• regularly maintain them
• reduce the coefficient of friction between the belt and deck as much as possible, replacing the belt at regular intervals.

Let's see why these factors are so important

How does the DC treadmill motor work? It is important to have knowledge of the basics so you can understand why it is important to test the treadmill motor properly.

The following applies to most domestic treadmills and some commercial treadmill motors. It does not apply to AC motors, which are mostly used in new commercial treadmills (treadmills for fitness centers and wellness centers).

Permanent magnets (PMDCs) or DC motors are built using fixed magnets mounted around the inside of the chassis. Between the magnets, the center of the engine (inductor) is made by

• a bearing shaft,
• a wrap (winding) which consists of wires, insulated from each other by an insulating resin,
• insulating material and
• metal blades (battery).

The shaft connects the motor to the running belt of the treadmill via a drive pulley and a transmission belt. The motor provides energy to start the treadmill when you press the start button. But how does the motor convert electrical energy into motion?

Mounted on the shaft inside the engine there is a core of iron (rotor) and around it there is a wrap of copper wires known as windings or coil. An electric current is passed through the windings of the motor.

The current comes from a motor control board that is connected to the motor via two brushes. The engine controller's job is to change the AC (alternating, usually 220/240) voltage into the DC and adjust the voltage.

The motor would not work (indeed it would be damaged) if it was directly connected to the wall outlet. The motor control card also allows you to change the motor speed by adjusting the voltage to the motor according to the speed set on the treadmill console.

When the electric current passes through the windings inside the magnetic field (created by permanent magnets), the shaft rotates to bring the magnetic balance back to the engine rotation. The rotational power of the motor depends on the force of the magnetic field created by the permanent magnets and the amount of current which travels through the copper windings. Therefore, the bigger the diameter of the motor is the better it is. Because the magnetic field of the permanent magnets is greater and the power at the same current is greater.

In the motor, it is important to couple the concept as it is necessary to make sure that you have a sufficient torque so that the treadmill moves smoothly when you are on it. The motor torque is normally indicated in Watt or Horse Power (HP).

You can increase the torque by increasing the magnetic field of permanent magnets (i.e. using a larger motor) or by increasing the current flowing through the windings. In practice, it is not possible to increase the magnetism of permanent magnets (they are permanent and cannot be changed). So you need to increase the current through windings to get more torque.

The amount of current that can pass through copper wires is limited by the size of the wires and the capacity of the motor control board (MCB) that provides electrical current. If you try to pass too much current you can burn copper windings, which will cause them to blend, or overburden, destroying them.

Small electric dissipation can go unnoticed in a bench test or running the motor with a car battery, but this can cause problems when the engine is connected to the control board and subject to high voltage. http://www.partsfortreadmill.com/

Apply the lubricant to the treadmill

CAUTION: Disconnect the power cord before starting. If the power cord is plugged into an electrical outlet, it can cause serious injury.

Read the instructions completely before starting.

1. Remove the security key and disconnect the power cord.

2. Grasp the right and left edge of the belt and pull towards the rear roller until the seam of the belt is above the rear roller. It may be necessary to pull several times if sewing is not visible at first. Be careful not to squeeze the fingers between the belt and the rear roller.

3. If you have a liquid lubricant (often supplied with the new treadmill), cut the tip of the lubricant tube. Raise a belt edge and apply 1/4 of the pipe to the platform, spreading it in zigzag shape. Try to apply the lubricant to the center of the platform and proceed to a belt edge. Do not apply the treadmill lubricant entirely to the edge of the belt. Leave 3 or 4 inches along the edge of the belt without lubrication. Raise the belt edge on the other side and apply the lubricant in the same way. It is important not to over-lubricate and lubricate the centre of the board / deck. If you have a spray lubricant, you can spray it to the center of the deck simply by lifting one of the two belt edges.

4. Grasp the right and left edge of the belt and pull towards the rear roll as described in Step 2. Do this until the belt sewing over the front roller is visible. In this way, the lubricant has spread evenly on your deck.

5. Connect the treadmill and insert the safety key. Set the treadmill speed to 4/5 km / h and walk on it for a few minutes before starting your training. http://www.partsfortreadmill.com/

When do you know that the treadmill belt needs replacement?

Often when observing the walking belt we stop to check if the belt is ok. We look at the side edges, we see that they look normal, we feel that the belt is in a good condition, the belt is in the right place. However, even in this situation the belt might still need to be replaced.

The lack of visible external signals that the belt has to be replaced, it is not a full insurance that all is fine. The belts are more likely to have problems on the bottom (white texture) than on the upper black side. On the texture side any problem will result in increased treadmill electrical consumption (which in a short time make electricity much more expensive than you would have spent on a new belt) and may bring to failure of expensive components such as controller and motor.

The following picture, from the technical service manual of a well-known European manufacturer of fitness and medical equipment, shows that when you see the black cloth appear on the underlying ribbon, this is to be replaced, although the outer rubber still looks good and even if the edges (where you do not walk) the belt appears still white.

 

To buy high-quality belts with low friction visit this link: http://www.partsfortreadmill.com/index.php/parts-for-treadmill/belt-for-treadmill/

MC-2000E treadmill Motor Controller LEDs troubleshooting

The MC-2000E motor controller has four LEDs that can be used to help troubleshoot electrical problems with this treadmill. Each LED, and its meaning, will be described:

15V- This LED indicates the controller is outputting 15 VDC needed by the controller Iogic circuit. If this LED does not light when voltage is applied, replace the controller.

SPD SIG- Indicates a speed control signal is being received from the console. The LED will flicker as the speed signal is received. If this LED does not light when speed is set above 0.0 MPH, but 15V does, it indicates a problem with the speed wires or console wires

GATE- Indicates that the controller is attempting to respond to an incoming speed signal. If this light is out, no voltage will be sent to the motor. This LED will vary in brightness depending on the speed setting. If this LED does not light when the safety key is inserted and SPD SIG is lit, the controller will need to be replaced.

HV BUSS- This LED indicates the capacitor on the controller is charged and is sending voltage to the drive motor. It will only light when both the SPD SIG and GATE LEDs are lit. http://www.partsfortreadmill.com/

 

Euro 30i treadmill Power Board LEDs troubleshooting

The Euro 30i power board has four troubleshooting LEDs to assist the technician when servicing the treadmill. Not all LEDs are mounted on some power boards. The meaning of each of these LEDs is as follows:

240V- This LED lights to indicate the power board is receiving 220-240 VAC. It will light when the treadmill is plugged in and the main on/off switch where the power cord enters the treadmill is turned on.

9VDC- This LED lights to indicate the power board is generating the 8-12 VDC necessary to power the console. It must always light when the 240 VAC LED is lit.

PWM- This LED monitors the speed control signal being sent from the console. This signal passes through the power board on its way to the motor controller. The LED will begin to flicker when treadmill speed is set above 0.0 KPH and turn off when the treadmill is stopped.

TACH- This LED monitors the speed sensor signal to the console. It will flicker as the treadmill is running. When the treadmill is at rest, the LED may remain lit or dim. http://www.partsfortreadmill.com/

Icon treadmill console Calibration Mode (Proform 790CD and other models)

This console has a calibration mode to assist the technician in troubleshooting. To enter this mode, press and hold the Stop and Speed + buttons while inserting the safety key. There are five levels in this mode. Move from one level to the next by pressing the Stop button. Exit this mode at any time by removing the safety key.

Level 1- This level displays how the console has been configured to operate. It also displays the numerical value of each button as it is pressed.

TIME (Left 1/2)- Minimum PWM speed signal '6'

TIME (Right 1/2)- Button Test Values

SPEED- Maximum Speed '19' ('12')

CALS- Roller size '1.9'

DISTANCE- Console software code version

Level 2-

This level is used to calibrate the incline and speed of the treadmill. To calibrate incline, press both Incline buttons. The treadmill will calibrate itself. To calibrate speed, press and hold the Speed + button until the Distance window displays an 85% speed signal. Adjust the MAX SPD pot / trimmer on the controller until the speed window displays 19.0 (12.0). Press Speed - and allow the treadmill to come to a complete stop.

TIME- Internal Test. FP=pass, FF=fail, NC=not configured, NR=not released

SPEED- Actual speed of the treadmill.

CALS- Blinking '1' with hand pulse signal, '2' with chest pulse signal.

DISTANCE- Current PWM speed signal (%) ‘0-85’

Level 3-

This level lights each LED on the console in order. The Speed buttons control the speed of the lighting pattern. Incline + toggles all LED's on and off. Incline - restarts the lighting pattern.

Level 4-

This level displays the total Time and Distance of the treadmill. It also shows the current units of measurement. TIME- Total time in hours

SPEED- Units: 'E'=English, 'rn'=metric

CALS-'d' if Demo mode turned on, else blank

DISTANCE- Total distance in miles

Level 5- Functional Test.

This level allows the treadmill to be tested while still in calibration mode. The treadmill will run normally alter the Start button is pressed, but the displays will show different information.

TIME- Elapsed Time

SPEED- Speed the treadmill is set to run

DIST.- Current PWM speed control signal output '0-85'

CALS- Actual speed the treadmill is running.

Units of Measurement

The units of measurement can be changed between English and Metric in the User Information Mode. Enter this mode by pressing down the Stop button while inserting the safety key. The Speed window will display either E for English or m for metric units of measurement. Toggle between the two settings by pressing the Speed + button.

Demo Mode

The console has a demo built into its software. The demo mode loops the console display through a lighting routine when the treadmill is plugged in, but the key is not inserted. All button presses are disabled. To disable this mode, enter the User Information mode by pressing down the Stop button while inserting the key. The Calories window will display a ‘d’ if demo mode is active. Press the Speed - button to toggle the mode on and off.

Error Code

This console features an Error Code that appears when the console fails a self-test.

E6- Checksum Error. This error indicates the console has failed an internal test. Unplug the treadmill for 30 seconds and try again. If it reappears, replace the console. http://www.partsfortreadmill.com/