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DaveC426913
Gold Member
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urgent: mini pond/fountain pump workings
Well, it's not life-or-death but, I've got a deadline for tomorrow to finish this thing I've been working on for months and I've just came bang up against what might be a showstopper.
I'm building a pond widget that is powered by an 11W mini pond pump, http://www.homedepot.ca/webapp/wcs/stores/servlet/CatalogSearchResultView?D=910305&Ntt=910305&catalogId=10051&storeId=10051&langId=-15&Dx=mode+matchallpartial&Ntx=mode+matchall&recN=0&N=0&Ntk=P_PartNumber&showreviews=true". My widget uses the pump for its axle, not for its waterflow. i.e. I've got gears on the pump's axle.
I've just discovered a very strange behaviour in the pump and I'm not sure what to make of it. It seems as if, occasionally, the magnetic motor reverses its direction. It seems that, say if the motor encounters too much resistance turning clockwise, it will just reverse direction, rotating counter-clockwise. It can flip back and forth like this continuously every few seconds.
If this is true, I am scrood. It frankly never occurred to me that a pump might change its direction. (operating as a water pump, this behaviour would have no negative effect, since the turbine blades are symmetical. No matter which way the pump turns, the water would still flow the same direction. That lends credence to the idea that this might be designed behaviour - which is bad for me.)
Can anyone corroborate or disspell this idea?
I've got to find a solution in the next 24 hours or months of work will be wasted...
Well, it's not life-or-death but, I've got a deadline for tomorrow to finish this thing I've been working on for months and I've just came bang up against what might be a showstopper.
I'm building a pond widget that is powered by an 11W mini pond pump, http://www.homedepot.ca/webapp/wcs/stores/servlet/CatalogSearchResultView?D=910305&Ntt=910305&catalogId=10051&storeId=10051&langId=-15&Dx=mode+matchallpartial&Ntx=mode+matchall&recN=0&N=0&Ntk=P_PartNumber&showreviews=true". My widget uses the pump for its axle, not for its waterflow. i.e. I've got gears on the pump's axle.
I've just discovered a very strange behaviour in the pump and I'm not sure what to make of it. It seems as if, occasionally, the magnetic motor reverses its direction. It seems that, say if the motor encounters too much resistance turning clockwise, it will just reverse direction, rotating counter-clockwise. It can flip back and forth like this continuously every few seconds.
If this is true, I am scrood. It frankly never occurred to me that a pump might change its direction. (operating as a water pump, this behaviour would have no negative effect, since the turbine blades are symmetical. No matter which way the pump turns, the water would still flow the same direction. That lends credence to the idea that this might be designed behaviour - which is bad for me.)
Can anyone corroborate or disspell this idea?
I've got to find a solution in the next 24 hours or months of work will be wasted...
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