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Controlling water pump speed

Jack B

Member
Joined
3 Jan 2020
Messages
163
Location
London
Having finally found the right converter for my Octo VarioS 6 pump, it works a treat - but is probably more powerful than I need for the flow I'm after, even if I revert to the 24v converter. Will find out for sure when I get it fitted.

If it is indeed too poweeful, would it be possible to fit the equivalent of a dimmer switch into the power cable to reduce speed? Obvs I could get a smaller pump but I quite like the idea of having a pump with lots of power in reserve for future tank upgrades
 

zozo

Member
Joined
16 Apr 2015
Messages
8,316
Location
Netherlands
Am I correct to assume you have this pump in a sump?

Then you do not really need another controller dimmer to regulate turnover.

naamloos-jpg-jpg.161595


Valve closed you will have the full turnover to the tank. Open the valve a bit then it will run a part of this back into the sump and less to the tank.
This way it's very easy to regulate and fine-tune the main turnover to the tank.
 

fredi

Member
Joined
25 Feb 2013
Messages
70
You can pwm the pump, using an ssr (solid state relay), and signal generator
 
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