|01-23-2013 02:48 AM|
How's it go? "It's better to burn out than fade away". LOL! I learned more than I bargained for in this thread. Y'all are great!
Fwiw, I got the mag fox cleaner. Now I'd rather have a set of the brushes with weed eater line. The fox is tiny. Cool, but tiny.
|01-18-2013 01:25 PM|
A mag drive is still a motor. And a generator, simultaneously.
The electromagnetic coils consume electricity and spin the permanent magnet on the impeller shaft. The rotating permanent magnet in turn produces electricity in the coils - but going in the opposite direction (called "back EMF").
This limits the current that flows through the coils. If the impeller is spinning free and easy, the back EMF is high, and so current consumed is small. If the impeller is jammed, missing, or just starting up, the back EMF is non-existent, and current is much higher. You might have noticed that a filter with a jammed impeller can get quite hot.
As for a filter with clogged media? The impeller is still able to turn, although with a bit more difficulty. Plugged into a watt meter, power consumption is typically about 10% above normal by the time there's significant flow restriction - I've experimented with using this to electronically detect when it's time to clean the media. This shouldn't be able to burn out any decent filter, as they should be designed with an acceptable safety margin. And in reality, the bigger risk is the impeller rattling around as a result of the abnormal flow, suffering physical damage. Still, it's better not to tempt fate. And easier to say "it might burn out" than go into all these details.
|01-15-2013 10:38 PM|
|OVT||What I am trying to say is that there is no motor in mag drives: an electro-magnetic field spinning an impeller in a Fe jacket. Impeller is the only moving part. Yes, the flow will slow down because the impeller cannot maintain the RPMs because of the building back-pressure, but there is nothing to burn out?|
|01-15-2013 07:57 PM|
"For every action there is an equal and opposite reaction"
If you have gunk in the line than it is exerting force backwards to the motor. Basically, increased resistance, which leads to increase in water pressure, which leads to more forces exerted on the pump itself.
Same idea as changing the oil in your car. You know how all the oil commercials promise to prevent/remove deposits.
|01-15-2013 01:55 PM|
|OVT||Um, a motor on a mag drive pump? I would really like to get an explanation on why the motor might burn out as I am trying to understand how it really works. Thanks.|
|12-17-2012 09:16 PM|
|12-16-2012 05:12 AM|
|Neatfish||I have this same filter It's been slowing down a bunch. I opened it up to look inside and it's pretty clean. What could be the problem? All kinds of junk came out the spray bar when I was trying to clean it so I had to do two water changes. I even took off the tubes and ran water through them to see if something was stuck but it was fine.|
|12-07-2012 02:45 AM|
|jester56||Thanks, Seattle. That looks like a good alternative. I just got the MagFox gadget in the mail today and I'll be checking it out Sunday. Will post the results here...|
|12-05-2012 05:33 PM|
I hated removing and cleaning filter lines - I found it time consuming and messy; so I picked up this brush.
Flexible Brush - 5 foot long for 1/2" - 1" diameter tubing; 4" long X 1" wide brush head
|12-05-2012 05:23 PM|
|jester56||Thanks for the info. And I am extremely happy with my CF400!|
|11-30-2012 07:55 PM|
Cleaning the Aquatop CF canister
Hi there--We have cleaning guidelines posted on our blog that you may find helpful. Feel free to call us as well if you have questions: 888 915-2782
We hope you like your CF Canister Filter!
|11-26-2012 02:09 PM|
Hoses on CF400UV
I have a CF400UV canister system and I'm starting to get some grungy buildup in the intake/outflow hoses. Is there a recommended cleaning procedure; special brushes or anything that would help with getting the grime from inside of them?