Author Topic: FLEX Vacuum  (Read 5886 times)

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Offline Michael Kellough

  • Posts: 4547
Re: FLEX Vacuum
« Reply #60 on: January 30, 2020, 11:09 AM »
Thanks again @Banana   this is very interesting.

I knew that turning down the speed control would reduce current draw but I also knew that blocking the airflow would increase it. I guess that idea was based on simple shop vacs that burn out if air flow is blocked for very long.

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Offline bleomycin

  • Posts: 1
Re: FLEX Vacuum
« Reply #61 on: January 30, 2020, 09:37 PM »
Does anybody know which adapter is compatible with the festool compact cleaning set? The universal hose adapter fitting that came with the vacuum definitely doesn't work with it.

Offline Banana

  • Posts: 17
Re: FLEX Vacuum
« Reply #62 on: January 30, 2020, 09:42 PM »
Thanks again @Banana   this is very interesting.

I knew that turning down the speed control would reduce current draw but I also knew that blocking the airflow would increase it. I guess that idea was based on simple shop vacs that burn out if air flow is blocked for very long.


Perhaps I should have said "fan type" instead of "motor' type.

My limited understanding is that fan design will determine if amps increase or decrease.  If the amount of air the fan has to move decreases because the resistance to airflow increases then the fan blades can spin easier. This allows the motor RPM to increase and the motor amp draw to decrease.

Offline Bohdan

  • Posts: 945
Re: FLEX Vacuum
« Reply #63 on: January 30, 2020, 09:51 PM »
Thanks again @Banana   this is very interesting.

I knew that turning down the speed control would reduce current draw but I also knew that blocking the airflow would increase it. I guess that idea was based on simple shop vacs that burn out if air flow is blocked for very long.

Simple shop vacs use the air flowing thru them to cool the motor. If you block the air flow the motor draws less current, spins faster and overheats.

Offline DynaGlide

  • Posts: 641
Re: FLEX Vacuum
« Reply #64 on: February 07, 2020, 10:57 AM »
@Banana Can we get some more details on how you situated and wired in the relay? As well as a link to the relay/remote you ordered?
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Offline Banana

  • Posts: 17
Re: FLEX Vacuum
« Reply #65 on: February 07, 2020, 03:14 PM »
*edited - Working on a new solution.  Will update post in the near future.
« Last Edit: February 13, 2020, 12:32 PM by Banana »