How to trigger kickback stop of Festool TS 60?

[Yoggoth]

Hi! Just bought a new (well, slightly used) TS 60 saw and trying to inspect it.

Also tried to trigger emergency kick back stop with no success:

• removed the blade
• put a saw on its track
• powered the motor
• plunge the saw
• lifted rear side of the saw (green led changed to blinking orange, motor continued spinning)
• landed rear side of the saw (blinking orange led changed to green, motor continued spinning)

What I do wrong (except wasting my time in a stupid way)?

Also done 8.11 Checking the KickbackStop function from the manual with KickbackStop function operates fault-free result.

 

[Crazyraceguy]

I may be totally misremembering, but I think @woodbutcherbower has some experience with this?
IIRC, he either did it, or at least tried? I don't remember the result though

 

[Coen]

8.11

Checking the KickbackStop function
WARNING
Risk of injury from a protruding saw blade.
► Carry out function testing on the guide rail.
► Before the function testing:
– Remove the saw blade,
– Set the cutting depth to 0 mm (FS).
► Set the cutting depth to 0 mm (FS).
► Place the machine on the guide rail.
► Switch on the machine.
► Press the KickbackStop function OFF button
four times at intervals of at least 0.5 seconds
within five seconds.
☑ The KickbackStop function status LED
flashes alternately red and green.
► Within 15 seconds
▻ Press the saw unit down.
▻ Lift the machine at the rear and lower it
again.
☑ A signal sounds, the status LED lights up
green. The KickbackStop function operates
fault-free.
If no signal sounds and the status LED does not
switch to green, the KickbackStop function is
not operating fault-free.
► Check whether the function testing was carried
out correctly.
► Clean the feeler unit behind the saw blade
(see "Changing the saw blade").
☑ If the function testing remains unsuccessful,
the machine must no longer be used.

So, seems yours falls in the last category.

Interesting... I never have to check if the riving knife of my TS 55 is working.

 

[Yoggoth]

So, seems yours falls in the last category.

Pay attention to my last line:

Also done 8.11 Checking the KickbackStop function from the manual with KickbackStop function operates fault-free result.

 

[Coen]

And you did not turn off the KickbackStop?

 

[Yoggoth]

And you did not turn off the KickbackStop?

I did not, and that is why led emits green light.

 

[woodferret]

Yank it faster? Just tilting it off level slowly probably makes it think you're cutting vertically or something which cannot engage the kickback feature because it needs relatively level grade. Mind you, I think that would be a logic error, as it shouldn't be changing mode while engaged.

 

[Coen]

Just tilting it off level slowly probably makes it think you're cutting vertically or something which cannot engage the kickback feature because it needs relatively level grade.

No, it needs a flat surface. There is a spring-loaded lever that is pushed inward to be flush with the bottom of the saw when the saw rides on a flat surface. Whenever the lever can extend beyond it engages the brake.

 

[woodferret]

Flashing orange: ... The saw's plate is not positioned such that it is completely level. Once the saw has been positioned such that is completely level, the LED will switch to green. "

 

[woodferret]

While not demonstrating the blinking orange... this Festool UK video gave me an idea for testing the kickbackstop.



You can cut an aperture in a board using a jigsaw. Then proceed to cut into it with the green light. Once the feeler hits the aperture, it should stop and require you to use the bypass. It should be a safe way to test the kickbackstop.

 

[Coen]

Flashing orange: ... The saw's plate is not positioned such that it is completely level. Once the saw has been positioned such that is completely level, the LED will switch to green. "

Lol. The more I learn about that TS 60 kickback stop, the more ridiculous I find it to be. Or the manual has poor wording... because why would it need to be level... when they sell stick pads so you can cut doors... in place?

 

[woodferret]

Ya, I'm not entirely sure what state that manual is... so I've been taking it at face value.

As for the blinking orange changing to green... it appears there's one more edge case it 'allows' Sedge demonstrates the flag stop going into blinking orange mode, but continues into green without hesitation when that sensor touches rail again. He mentions something about plunge+jerk, alluding that it needs that jerking motion.



Weird edge cases. He does mention however that open holes for registers while cutting floors (without rail) will trigger the stop unless you override, much like the previous video.