Tunze ato to neptune pulsing

[Xxflounderxx]

So since the neptune pmups are junk I bought an tunze ato pump and used a step down transformer from 24v to 12v but it's pulsing. So it is like it's getting intermittent power it pumps then shuts off even with the ato line disconnected any ideas?

 

[Garf]

So since the neptune pmups are junk I bought an tunze ato pump and used a step down transformer from 24v to 12v but it's pulsing. So it is like it's getting intermittent power it pumps then shuts off even with the ato line disconnected any ideas?

Dunno but that's a DC to DC, is the pump DC, or AC?

 

[Xxflounderxx]

Neptune pump is dc 24v

 

[Justfebreezeit]

Tunze is 9v. Might not fall within range

 

[redfishbluefish]

Tunze Osmolator is listed as 3 - 12 V DC.

I'd start by checking your voltages on the converter with a multimeter. What are the actual voltages?

 

[Xxflounderxx]

It says able to 12 should I get a 9v transformer?

 

[Xxflounderxx]

Incoming 24v outgoing 12v but when the pump is pulsing once and I while it will pump but then won't restart

 

[Xxflounderxx]

So when the pump is pulsing I can't really get in incoming voltage it's around 3v

 

[redfishbluefish]

Scratching my head on this one....the Neptune pump is rated at 19 watts, so the power supply has to be at a minimum supplying 19 watts....and that should be enough wattage (amps) for the Tunze. The only other thing I'd check...do you have the wires connect correctly to the Tunze as far as positive and negative.

 

[Xxflounderxx]

I'd tried both ways but i couldn't find a wiring diagram it's like it has problems starting if take the tunze wires of the transformer and touch them by hand 3 to 5 times I can get it to run and stays running but when I turn power off then back on it pulses again

 

[redfishbluefish]

As far as who is positive/negative, the general rule for European wiring is brown is positive and blue is negative.

 

[Xxflounderxx]

So that's how I have it wired. So if the pump has power pulsing and I disconnect the positive and put it back in without Turing off the power the pumps turns on and runs fine. Then if I turn the power of then back on it will not restart

 

[redfishbluefish]

What is the actual label on the 24 volt power supply?

 

[Xxflounderxx]

Power supply to the atk

 

[redfishbluefish]

Power supply to the atk

No picture....it's a 1 second voice message that's garbled.

 

[Xxflounderxx]

Sorry fixed it

 

[Justfebreezeit]

I found a brs question of someone asking about this and brs said the pump is designed to work at 9v that the little controller provides. Take that for what it's worth.

 

[redfishbluefish]

Power supply to the atk

That checks out....wanted to make sure the amps on the pump matched the amps of the power supply. The Neptune pump was rated at 0.8 amps and the power supply was rated at 1.5. You want amps of the device being run to be powered by a supply that is equal to or greater than what is needed....all good.

I found a brs question of someone asking about this and brs said the pump is designed to work at 9v that the little controller provides. Take that for what it's worth.

If you're talking about the Tunze Osmolator pump, it's rated at 3 - 12 volts. The more volts the "faster" it runs.



I'm now at a loss as to what your problem might be. The next thing I'd do is to test the Tunze with some other 12 v power supply I have....or if you have another 24 volt power supply, hook it up to the converter and test that. My thought is that the original power supply is fried.

 

[Justfebreezeit]

That checks out....wanted to make sure the amps on the pump matched the amps of the power supply. The Neptune pump was rated at 0.8 amps and the power supply was rated at 1.5. You want amps of the device being run to be powered by a supply that is equal to or greater than what is needed....all good.




If you're talking about the Tunze Osmolator pump, it's rated at 3 - 12 volts. The more volts the "faster" it runs.



I'm now at a loss as to what your problem might be. The next thing I'd do is to test the Tunze with some other 12 v power supply I have....or if you have another 24 volt power supply, hook it up to the converter and test that. My thought is that the original power supply

The meter is reading 12.1, very would could be maxing out the windings.

I'm in hvac so definitely not an electrical engineer. I just think it might be worth dropping it to 9v and trying again.

Cheap test imo

 

[Justfebreezeit]

Let us know if you got it working, am curious to see the solution.