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Jasmine
Karen2578
And how much does such a pump cost?
Michelle5859
Where to buy pumps?
Jacqueline6670
At the Tkach's, he seems to have another 55 and apparently a couple of 70s. I can't say for sure how much they cost; I need to check with him. I took one to try to modify since I already have plenty of various "heaters," and I don't see any alternatives to this pump (except for Ivaki, of course). If you connect it to 60 Hz, the performance increases by almost one and a half tons, and the lift goes from 6 to 8 meters. I have an idea for modifying a UPS or inverter to 60 Hz.
Charles894
We have size 40, about 4 pieces.
Sheila
The pump is not bad, but... it's just as much of a "heater" as all the others.
Whitney
Sorry to interrupt, but do you even have an idea of MD-type pumps in operation? What "heater" are you talking about? Its heated parts do not come into contact with water, as it is a pump with a magnetic coupling and a separate plastic vortex chamber.
Amy5070
If I didn't represent it, I wouldn't say it.
This pump has two rotors.
One rotates under the influence of the electromagnetic field in the stator,
the other rotates with a simple magnet.
Both heat up due to eddy currents.
When I bought such a pump, I also thought it didn't heat up. I turned it on in a small volume (50 liters), the temperature rose to 35, and then I started to think...
You can give it a try.
Lindsey3362
In that case, why did no increase occur in my 15-liter sump after running idle overnight, meaning it circulated water through the injector without being connected to the aquarium?
Kenneth7331
It seems that he meant a "crooked" rotor (where the shaft is not centered). Yes, it will heat the water, there are such eddy currents that even the floor shakes.
Lauren
Any pump heats water, whether it's crooked or straight. There are no miracles. ;(
Keith7534
It's obvious even to an elephant. Let's compare which pump will heat more, the external "magnetic" (like Resun) or the internal (submersible), given the same power.
Rita
I checked the Taiwanese MAC 5, it was eight years ago. The balancing is decent, there is no significant vibration, by the way, it hasn't been turned off or repaired since then. Maybe you didn't heat the water due to a very high air flow through the injector (the water-air ratio is practically 1:1) and as a result, a lot of evaporation - cooling.
Megan
My Ivaki MD 55 RT does not heat water at all, not even by a degree, although the stator itself does get a little warm, but still, it's 130 watts.
Courtney4094
Isn't the Resun MD55 a copy of Iwaki? There is also another clone in nature, the Gen-X PCX-55, at the price of Resun.
Richard
Perhaps the most important clone is the Iwaki American motor, but for the most part, they are still at 110 volts.
Chad231
It would be interesting to test Risan.... As far as I understand, the theory here could be as follows: If the motor rotor and the pump rotor rotate synchronously without slipping, there should be no heating. If there is slipping, meaning the magnetic coupling is insufficient, the alternating magnetic field will induce eddy currents in the pump rotor, and they will heat it up. It's hard to say how it actually is; it's easier to test...