CT 22 (+SR151 & Mini) circuit board schematics

[Daniel_n]

Hi!

I am looking for a schematic showing the circuit board for the CT22. The order number of the 230V version is 456773 (the board is also marked 452133 and 452132J). I am also interested in the schematic for the 110V version, as well as the schematics for the Festo SR-151 and festool Mini circuit boards, I have no order number for those.

Anyone have these schematics as a pdf or some similar format?

 

[Rick Christopherson]

No, not even Festool USA would be given access to such highly confidential data. (I have asked). However, if you have a specific question regarding the functions, I might be able to assist you. What is it that you are looking for? Because you are asking about both 120V and 240V vac's, I might already know what you are after.

 

[Daniel_n]

Thanks for your answer Rick. Actually I don't know what I am looking for...

A friend of mine, who is very skilled with electronics and that kind of stuff (don't ask me about the details) is having a look at my vacuums to see if it is possible to extend the "after-suction-time" (the period of time before the vacuum shuts off after you have switched off the tool that is hooked up to the vacuum).

As I live in Sweden, I have the 230V version of the vacuums, but my friend told me that the 110V schematic could be of interest as well.

Best Regards//daniel

 

[AlexThePalex]

I can understand you would like to extend the 'after suction time'. I think it's a bit too short too. Very often do I find dust in the hose when I remove it. But like Rick said, such things are closely guarded factory secrets.

 

[fortrout]

I also feel the vac's shut down to quickly. I recently had to hook my Kapex up to a Sears shop vac , I purchased a part from Rockler to run the vac when the saw runs, It stays on after the saw for 10 or 15 seconds ( just an estimate,I have not timed it) LINK to this part http://www.rockler.com/product.cfm?page=17351

 

[WarnerConstCo.]

I also feel the vac's shut down to quickly. I recently had to hook my Kapex up to a Sears shop vac , I purchased a part from Rockler to run the vac when the saw runs, It stays on after the saw for 10 or 15 seconds ( just an estimate,I have not timed it) LINK to this part http://www.rockler.com/product.cfm?page=17351

I have 2 of those, they run for 7 seconds after the tool is off.

 

[Rick Christopherson]

A friend of mine, who is very skilled with electronics and that kind of stuff (don't ask me about the details) is having a look at my vacuums to see if it is possible to extend the "after-suction-time" (the period of time before the vacuum shuts off after you have switched off the tool that is hooked up to the vacuum).

In all likelihood, that function is controlled by a simple RC circuit (resistor/capacitor), and you could extend the time by increasing the value of either component. Unfortunately, the control module is encased in epoxy, so you cannot trace which components on the module might be performing this function, nor would you be able to remove the components and solder new components in their place.

When you were asking about both voltages, I was thinking you were trying to change the voltage on the accessory outlet or something.

 

[vajper]

I happen to be the friend of whom Daniel_n is speaking of. One would think that the after suction time is just controlled by a simple RC net the design is actually a lot more complicated. Or maybe I should say the design consists of a lot of components. The controller board of the CT22 is actually NOT encased in epoxi so I know. There are few hole mounted components on the top side of the PCB. If you flip the PCB there's a lot of SMD components on the back. It possible to draw a schematic (without all passive component values) by just looking at the board but it would take a couple of hours.

I haven't dissected the Mini vac yet but I have seen pictures of its innards and it seems like the 230VAC controller board version is moulded in epoxi.