Transcript
Service Bulletin: Treadmill Deck Friction Testing Prepared by: Craig Burfield & Brian Nelson
Date Prepared: 4.24.2017
Models Affected: All Commercial Treadmills
Time Required: 15-20 minutes
Bulletin Number:
DESCRIPTION This process is replacing the Amp Draw Testing procedures as taught in the past. Follow the instructions below to measure the coefficient of friction between the belt and deck. This reading will give an indication as to the amount of wear of each of these components and help you determine what steps need to be taken on the deck and running belt if any. REQUIRED TOOLS Online Remedy access Treadmill friction measurement power cord (Part# ZMS4006476) Multi-meter with a current clamp capable of measuring average current (True RMS) Recommend: Brand – Amprobe, Model - AMP-210 (see last page of this instruction for more information)
AMP-210
Power Cord
PROCEDURE 1. Setting up the treadmill a. Turn off the treadmill at the power switch b. Unplug the frame power cord from the wall outlet c. Plug the treadmill frame power cord into the new cord d. Plug the new cord into the wall outlet 2. Warming up the deck and belt a. Walk or run on the treadmill for 3-5 minutes
1| Revision Date: 6.28.2017 | Revised by: Brian Nelson
3. Setting the meter a. Hang the power cord with the black, green and white (brown, yellow, blue for 220v) wires around the handlebar
b. Set the meter to amp reading and clamp the BLACK (BROWN for 220v) wire
Important: make sure the BLACK/BROWN wire is positioned at the top of the clamp to obtain true readings
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4. On an Internet connected device, navigate to the Deck Friction Calculator found under the “Tools” header in Online Remedy 5. Enter the FRAME Serial Number into the space provided in the Deck Friction Calculator The steps below may require you to change the belt stop (tread sense) setting. If you do change any settings, please be sure to reset them back to what they were. 6. Measurement 1: No user, no incline a. Set the treadmill to 3.2 MPH/5.0 KMPH at 0% incline. Do not walk on the treadmill at this time b. Once the desired Speed is achieved, begin recording the average current over a 15 second period by pressing ‘REC’ on the meter c. Stop the average current recording by pressing ‘HOLD’. d. To find the average current value, press ‘REC’ three times. It will show you the values in this order: Max, Min, Avg. Enter the recorded average current value into the Friction Calculator (enter the number to the nearest tenth – ex. 3.7) e. Turn off your meter to reset it 7. Measurement 2: With user walking, no incline a. Set the treadmill to 3.2 MPH/5.0 KMPH at 0% incline b. Once the desired Speed is achieved, begin walking normally on the center of the running belt, ¾ of the way towards the front. Record the average current over a 30 second period by pressing ‘REC’ on the meter c. Stop the average current recording by pressing ‘HOLD’ then step on the side rails or press Stop on the console (do not stop walking until you press Hold or the reading will be inaccurate) d. To find the average current value, press ‘REC’ three times. It will show you the values in this order: Max, Min, Avg. Enter the recorded average current value into the Friction Calculator (enter the number to the nearest tenth – ex. 3.7) e. Turn off your meter to reset it 8. Measurement 3: With user walking, full incline a. Set the treadmill to 3.2 MPH/5.0 KMPH at 15% incline b. Once the desired Speed and incline is achieved, begin walking normally on the center of the running belt, ¾ of the way towards the front while not holding onto the handlebars. Record the average current over a 30 second period by pressing ‘REC’ on the meter c. Stop the average current recording by pressing ‘HOLD’ then step on the side rails or press Stop on the console (do not stop walking until you press Hold or the reading will be inaccurate) d. To find the average current value, press ‘REC’ three times. It will show you the values in this order: Max, Min, Avg. Enter the recorded average current value into the Friction Calculator (enter the number to the nearest tenth – ex. 3.7) e. Turn off your meter to reset it 9. With all values entered in the Deck Friction Calculator, use the chart below to determine what your next steps should be
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Friction Value .000 to .250
Result Low friction - no action necessary
.251 to .400
Med/high friction – Follow the steps below to determine next step High friction – flip/replace deck and replace belt
.400 and above
CTS/Technician – Document all findings in the case. 1. Record the friction reading in the case then follow the steps below to determine next steps. Be sure to record all data in the case. 2. Obtain/record the miles and time 3. Check the tension of the running belt. If it is too loose or too tight, tension properly and take new readings (readings from a loose OR tight belt will be higher than a properly tensioned belt). 4. Inspect the front and back rollers for lumps. Roll the belt with your hand or foot. Do you see lumps on the roller? These lumps are dust mixed with wax. Once it mixes, it will not redistribute to the running surface. 5. Lift the belt enough to get your hand under. Feel the surface of the deck in the “running/walking” area. Is it sticky, do you feel grooves? 6. If the reading is between .251 - .315, rotate the deck. a. Loosen the running belt. Remove the deck bolts and slide the deck out b. Rotate the deck front to back as shown below (DO NOT FLIP) c. Wipe the deck clean with a dry cloth d. Use a plastic scraper to remove as much dirt/wax buildup from the rollers as you can before re-installing the deck – be sure to vacuum or sweep away any debris you scrape from the rollers e. Before you re-install the deck, use a sharpie and write “Rotated” and the mileage and date on the end of the deck that will face the rear roller
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7. If the reading is .316 or above, reach under the unit and feel if there is a fresh side of wax (has it been flipped already or not) a. Can scratch off wax = not flipped b. Can-not scratch off wax = already flipped (can-not use that side again) 8. If the reading is .316 or above, you will need a new belt and flip or replace the deck based on your finding in Step 6. If you need to order the parts, remove the deck and rotate it 180 degrees as shown above to lower friction until you can come back with parts needed
WHEN REPLACING A DECK, PLEASE REPLACE THE ELASTOMERS (DECK SHOCKS) AT THE SAME TIME Parts Deck Deck bolts Front elastomers Middle elastomers Back elastomers Running belt
5/7 Series Frame 004301-B 004562-AB (4) 0000089487 (2) 0000089488 (4) 000763-E (2) 0000094489
1/3 Series Frame 004284-AB 004562-AB (4) 0000095661 (2) 0000095662 (4) 0000091092 (2) 0000094490
Remember: The running belt is not needed when rotating the deck. New side of wax, new belt.
True RMS is measured by using a mathematical equation measuring an average of current over a given amount of time. Only a meter stating it measures “True RMS” is guaranteed to give an accurate AC voltage or current measurement. If a meter does not state it is “True RMS”, it will output derived values of AC voltage or current assuming a perfect sine wave and therefore may be inaccurate in real world applications. Click on the links below to purchase the multi-meter shown on page 1 (Amprobe AMP-210) https://www.grainger.com https://www.amazon.com http://www.globaltestsupply.com
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