跑步機 treadmill

舊的跑步機賣掉幾年了，夠舊但一點問題沒有。

1. Proform  Crosswalk 397

兩年多的proform 397(831.24843.4)，說明書是395(831.24833.0)，皮帶偏左且左端隆起。https://www.treadmilldoctor.com/proform-crosswalk-397-walking-belt-model-248430 

397與395的差別，前者麵板鍵圓角，QuickSpeed檔位1-2-4-6-8-10；後者方角，2-4-6-8-10；跑帶分別為248430/248330。395的surge protector在397中去掉一半，拆馬達蓋板的步驟也去掉了，如下圖左。跑帶張緊不能過度，如下圖右。

網上搜索的結果，看來是皮帶上得太緊使得皮帶膠層滲透到纖維層，變形導致的，不知道加泡熱水能否恢複。熱風我是不敢試的。跑帶背麵兩側有兩片弧形擋片，限製跑帶跑偏，張得太緊它們就造成跑帶變形隆起。我這個機子，即便左側比右側緊很多還是跑偏，才是問題關鍵，原擁有者不懂，搞得皮帶不能用了。

跑步機電機通過傳動皮帶轉動前軸，跑帶後部兩側有調整內六角螺栓，順時針為張緊。通常有下列維護：

1. 跑帶偏向一側：在低速下調整後部螺栓。往左邊偏的話，左邊緊1/4圈右邊送1/4圈。

2. 跑帶打滑或太鬆：低速時上去會停。兩邊同時張緊1/4圈，直至問題解決。正常時，停機用手可掀起跑帶中部3吋。

3. 跑帶的潤滑：每50公裏可在停機後，掀起跑帶，在下麵兩側各上10ml矽油，即跑帶專用耐高溫油，開機轉兩分鍾。美國跑帶內部含油不需潤滑。注意跑帶正麵需有摩擦，反麵需減少摩擦。正麵用抹布擦淨即可。

前後跑帶軸需要時矩形，但問題可以是平行四邊形也可能是梯形。後者需要調整主動軸非電機傳動的另一側，使得跑帶與前軸正交。

https://www.treadmilldoctor.com/belt-moves-to-one-side 

change roller sleeve: https://www.youtube.com/watch?v=DelBSpa3rWw 

2. NordicTrack Treadmill 2200R（NTL15950）

manual: https://www.manualslib.com/download/112732/Nordictrack-2200-R-Ntl1595-1.html 

一是要加surge pretector但不能用GFCI，必須要地線；二是電源先開再放安全鑰匙按Start，不然不轉，電源開關可能因過載而跳起；三是控製台不正常時可能是測速幹簧管的問題，說明書中有調整方法；四是跑帶的張緊以中部兩側都能掀起3-4吋為度；五是跑帶往左/右偏移，順/逆時鍾調左側內六角半圈；六跑帶打滑，順時種調兩側內六角1/4圈。

跑步機通常是直流電以以便調速。橋整電路中串入可控矽觸發調相電路。電機如果有4線的話，其中兩線是火線入和經溫控切斷開關的火線出。兩個幹簧管，一是電機轉速傳感另一是鑰匙。網上該機電機板沒有變壓器，看來是可控矽的。電機286633 2.25HP130VDC(或NTL15951) 300刀以上，坡度電機209758停產。

belt runs for just one second：“To fix E7 error you have to put the safety key in，start it and wait for it to say E7. Now press stop and incline (up) together and hold for 20 seconds. Your treadmill will start to incline up. Take out your safety key. You just restarted your treadmill and can now put the safety key back and your problem will be fixed. I know that each error message means something different for example E7 is an incline error and to solve mine I did the above. However, this might be helpful for other errors since you're restarting your treadmill. You can download a pdf of treadmill troubleshoots off the internet and it will show you the meaning of your errors. Hopefully this helps :) ”

屏幕不亮：反轉鑰匙磁鐵麵正常，可能是霍爾器件極性反轉。

屏幕按鍵逐漸失效，換了個地方一切好了兩天，出事時麵板全亮。網上建議：

Remove the console from the treadmill and remove the back

remove and reattach the ribbon cables that run from the keypads to the control board (they are flat plastic strips that push into the board).
remove and reattach all the connections on the console
reattach the console and calibrate by doing the following:
1. With the key off press the speed + and stop buttons at the same time and hold
2. place the key on and release the buttons
3. press the stop key once
4. press the speed up til it reaches 85
5. if your max speed is 10 mph then it should read about 9.8-10.2

If the keys will not work then the console is bad and would need replaced. You have to buy the whole console because the manufacturer does not sell just the touchpad overlay assembly.

拆卸麵板需先取下兩側方管蓋帽，短螺絲在方管內不要掉下去了。注意下圖管內有線束：

拿下麵板組件，卸下後麵若幹螺絲，蓋板隻在上端有扣，上推即可。

PCB上有兩個7805、一個LM317。一個TIP32C(PNP 4A)燒掉了，換成TIP42C(6A)並加鋁片散熱，修複。

3. Proform 520i

原價$800。打滑，就是腳踩在上麵速度0.4mph時，隨機可見跑步帶及帶動軸不轉。斷電，將若手臂深入跑步帶下若不及其寬度一半，張緊沒問題。手冊說帶的邊緣可掀起3-4“。

卸後側中部螺絲，再將控製台前翻，鬆開底部4螺絲，地上鋪白布，機器複原可取下電機蓋板。按此視頻張緊：https://www.youtube.com/watch?v=G0-d50K2Sls#t=5m48s 實際發現上麵螺栓無法上緊因U件會變形。motor belt 186689 

manual： https://data2.manualslib.com/pdf3/58/5711/571059-proform/520i.pdf