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Re: CF 741 intermittent start


 

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The only info I will add is that, from your description of blade cover MicroSwitch, your switch is working. It disables and enables, so both positions are providing whatever is necessary, electrically. So you should be able to adjust the position of the switch to make it work as intended. The screws on the MicroSwitch on the blade cover of K975 (diff cover) go in slots, so it can be moved fwd/backwards. Hopefully, yours is similar.

Imran

On Jan 26, 2020, at 8:40 AM, murrayau1 <murraywp@...> wrote:

?Hi all
I am having issues with my CF 741 combination machine. It quite regularly goes dead and refuses to start.
The master switch which controls which part of the combo is functioning has a setting for reverse direction shaper. When you select this, a yellow light is illuminated so it offers an indirect way of finding out whether the machine is powered up. Mostly when I have the no start the yellow light comes on, this seems to indicate a safety microswitch issue. However I recently had an incident where the yellow light did not come on and I fiddled with the red mushroom switch on the jointer and it came good. You have to rotate this switch so that it pops out and I suspect mine may be a bit flaky, has anyone had problems with these? most of the time however I think the problems are due to the safety micro switches.
The microswitch on the saw blade cover is an issue, if I have a cover fully shut the saw won't start, I have to leave at about half an inch ajar. You can generally hear these switches clicking, is this clicking any indication that they are actually working electrically?
Is it the case that if any of the safety micro switches are not enabled for any part of the combo machine nothing will work? That is to say if a microswitch for the saw is indicating a problem then you can't start the jointer. If this is the case it does seem rather daft as it makes it really hard for the poor user to work out which micro switches are at fault. Is it safe to blow the microswitches? with air and is this likely to do any good?
I believe the CF 741 as the following micro switches:
saw blade cover open
planer jointer table down
planer jointer table up
dust hood in planar mode
dust hood in jointer? mode

Is there any way of easily diagnosing which is at fault?



thanks

Murray

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