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Author Topic: Kapex brushes  (Read 2899 times)

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Offline Peter Durand

  • Posts: 182
Kapex brushes
« on: May 26, 2016, 01:30 PM »
I have a kapex that has been trouble free for a number of years and am very happy with it. My question is about brushes. In the distant past I have replaced brushes on various motors. It was an easy task. Loosen screw, insert new brush, tighten screw.

I understand that the kapex motor uses brushes, and as a wear item, what is the first sign that they need replacing? Also is it a straightforward task?

Thanks,

Peter

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Offline builderbob

  • Posts: 1358
    • RJP Remodeling
Re: Kapex brushes
« Reply #1 on: May 26, 2016, 03:15 PM »
I recently replaced mine. It was very easy. You have to remove the top motor cover, unscrew and remove the brushes and put it back. Very straight forward!
Kapex, TS55, CMS GE, Carvex 420, Domino DF500, MFK 700, OF 2200, OF 1400, OF 1010, EHL65, RAS 115, RTS 400, RO150, ETS 150/3, ETS 125, CT 22 (2), CXS (2), C-15+3, T-12+3, PSB 300 & more MFT's than i can count!

Offline builderbob

  • Posts: 1358
    • RJP Remodeling
Re: Kapex brushes
« Reply #2 on: May 26, 2016, 03:22 PM »
Here's a look at the kapex with the motor cover off. The gold points at north and south are the brushes.

Kapex, TS55, CMS GE, Carvex 420, Domino DF500, MFK 700, OF 2200, OF 1400, OF 1010, EHL65, RAS 115, RTS 400, RO150, ETS 150/3, ETS 125, CT 22 (2), CXS (2), C-15+3, T-12+3, PSB 300 & more MFT's than i can count!

Offline TylerC

  • Festool USA Employee
    FOG Administrator
  • *
  • Posts: 947
Re: Kapex brushes
« Reply #3 on: May 26, 2016, 05:21 PM »
That's a great question. Festool brushes are an auto shut-off brush. When they reach the end of their life, an insulator is exposed and breaks electrical contact with the commutator on the armature and the motor simply will not run. If there is a problem with one of the brushes (chipped, broken, cracked, from heat damage), you may see some arcing or experience other problems. However, without seeing the tool I really cannot diagnose and say the problem is or is not the brushes.

Changing the brushes is pretty straight forward: one lead and one screw on each brush. If you would like to send the tool in for repair and have Festool troubleshoot the machine, you can create a service request here:
 
https://www.festoolusa.com/account/repair/

Offline Peter Durand

  • Posts: 182
Re: Kapex brushes
« Reply #4 on: May 27, 2016, 10:31 AM »
Thanks for the info. Much appreciated.

Peter

Offline ear3

  • Posts: 3237
Re: Kapex brushes
« Reply #5 on: May 27, 2016, 06:59 PM »
So just to confirm @TylerC in case I ever have this issue in the future.  Should I not experience any of the arcing you mention, the first notice I will have on needing to replace the Kapex brushes is that the saw simply will not run (assuming there are no other issues)?

That's a great question. Festool brushes are an auto shut-off brush. When they reach the end of their life, an insulator is exposed and breaks electrical contact with the commutator on the armature and the motor simply will not run. If there is a problem with one of the brushes (chipped, broken, cracked, from heat damage), you may see some arcing or experience other problems. However, without seeing the tool I really cannot diagnose and say the problem is or is not the brushes.

Changing the brushes is pretty straight forward: one lead and one screw on each brush. If you would like to send the tool in for repair and have Festool troubleshoot the machine, you can create a service request here:
 
https://www.festoolusa.com/account/repair/
Kapex KS 120 w/UG Cart and Extensions • CXS Set • T18+3 w/Centrotec Installer's Set • PDC 18/4 • TS 75 • TSC 55 • HKC 55 w/250, 420 and 670 FSK rails • Carvex 420 w/Accessory Kit • Domino 500 Set • Domino 700 XL • OF 2200 w/Base Accessory Kit • OF 1400 • OF 1010 • MFK 700 EQ Set • LR 32 • MFS 400 w/2000, 1000, and 700 extensions • Rotex 90 • Rotex 150 • LS 130 • ETS-EC 150/5 • ETS 150/3 • Pro 5 LTD • RTS 400 • RAS 115.04 • DX 93 • RS 2 • HL 850 • Vecturo OS 400 • CT 26 w/Long-Life Bag • CT Sys w/Long-Life Bag • MFT/3

Offline mastercabman

  • Posts: 1852
  • NORFOLK,VA
Re: Kapex brushes
« Reply #6 on: May 27, 2016, 07:44 PM »
So just to confirm @TylerC in case I ever have this issue in the future.  Should I not experience any of the arcing you mention, the first notice I will have on needing to replace the Kapex brushes is that the saw simply will not run (assuming there are no other issues)?

That's a great question. Festool brushes are an auto shut-off brush. When they reach the end of their life, an insulator is exposed and breaks electrical contact with the commutator on the armature and the motor simply will not run. If there is a problem with one of the brushes (chipped, broken, cracked, from heat damage), you may see some arcing or experience other problems. However, without seeing the tool I really cannot diagnose and say the problem is or is not the brushes.

Changing the brushes is pretty straight forward: one lead and one screw on each brush. If you would like to send the tool in for repair and have Festool troubleshoot the machine, you can create a service request here:
 
https://www.festoolusa.com/account/repair/
Yes
I don't understand!?! I keep cutting it,and it's still too short!

Offline ear3

  • Posts: 3237
Re: Kapex brushes
« Reply #7 on: May 28, 2016, 09:48 AM »
Kapex KS 120 w/UG Cart and Extensions • CXS Set • T18+3 w/Centrotec Installer's Set • PDC 18/4 • TS 75 • TSC 55 • HKC 55 w/250, 420 and 670 FSK rails • Carvex 420 w/Accessory Kit • Domino 500 Set • Domino 700 XL • OF 2200 w/Base Accessory Kit • OF 1400 • OF 1010 • MFK 700 EQ Set • LR 32 • MFS 400 w/2000, 1000, and 700 extensions • Rotex 90 • Rotex 150 • LS 130 • ETS-EC 150/5 • ETS 150/3 • Pro 5 LTD • RTS 400 • RAS 115.04 • DX 93 • RS 2 • HL 850 • Vecturo OS 400 • CT 26 w/Long-Life Bag • CT Sys w/Long-Life Bag • MFT/3