Master Recirc Pump Arrives!

moonpod

moonpod

Premium Member
THANKS Roger! I open up my front door and there's this box from Austin, TX there...I'm thinking, "I don't know anyone in Austin...", but of course I'm wrong! Roger is from Austin!

Anyways, first impression, it's pretty solid feeling. I see what you mean about the aluminum fins--definitely NOT for submerged use. It's got threaded in/outs so I'm gonna just slap some barb fittings on and plug it in place of an RD and see how it compares. Killawatt numbers and relative flow.

Once again, Roger comes through!:bum:
 
Master%20Recirc.jpg

Tunze%201073_140.jpg
 
That is a slick looking pump.
It looks smallish.
How is its size in comparison to a Dolphin?
Sean
 
won't be 'til after the holiday.

I'm gonna swap it out for a RD 12. By the numbers should push harder than the RD 12--which in the real world (not the numbers world) pushes harder than a Dart and has less electrical consumption (killawatt meter)
 
Moonpod,

Are you using that for a CL or return? I need something like this so I can plumb my 3 FO tanks together. Please let us know how it works out.
 
OK first impressions, The largest master recirc does indeed push harder than a RD12 (as advertised). I'm gonna let it run for a little while before I get amp draw numbers. It is not silent, there's a small "whir" to the thing--not loud or annoying at all, but the thing is not silent--almost like it's got a small fan, but as far as I can tell it doesn't. It's got a more "regular" height to the intake vs the RD which is a bit higher than the rest. It's also a bit longer than an RD, but still respectiably small.

I replaced a RD12 that was on a closed loop line--the RD had stuff in it anyways and needed to be cleaned. So we'll see how things go. But certainly I think it's quite respectable already b/c it pushes harder than a RD12 and makes Dart level noise.
 
Charles,

People have been asking me why their is a discrepency between amp draw and wattage- basically they don't add up. Can you test wattage as well? This motor is not your straightforward AC motor, it has some sort of driver and this could seriously alter the power factor and explain the discrepency since watt is amps x volts x power factor. If you have a meter that does PF and watts and VA this would be great to know. I just don't have any tanks big enough to test one of these pumps on.
 
I'll see what the killawatt can do. It's all I have,but FWIW on a killawatt, the Dart draws 200-205, the RD12 160w and the RD12 clearly outflows a dart. This pump clearly outflows the RD12 (it's supposed to), but I have no good way to measure flow
 
Yeah, It has to do with power factor which I can't honestly say i ever understood very well. It's good to know it uses less power than it is rated at though.
 
Roger,

Did you ever figure out what was going on with the power rating? Wouldn't our electricity companies determine our bills using amps? Thanks.

Paul
 
As for what is going on with the reading in motors and what are termed inductive loads the formula for watts is not so simple and instead of just amps * volts it is amps * volts * power factor, this is the result of the power factor.
 
I just wonder how quiet is this pump? I am looking into the smaller one 1073.090 2377gph (9000lph). In terms of noise, is it on par with the sequence Dart?

Thanks,

Sean
 
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