12 Volt or 110 Volt?

[DrTimPerkins]

At my own place, I use an old computer power supply that does the same thing.

Ah....those old computer power supplies can come in quite handy. Just pay attention to the warning sign that says "no user serviceable parts inside." Don't ask how I know that.

[wiam]

Ah....those old computer power supplies can come in quite handy. Just pay attention to the warning sign that says "no user serviceable parts inside." Don't ask how I know that.

How do you know that?

[MarquisVII]

Firing up this thread with another question for those that have run both AC and DC.

My AC powered 4008 just died (new last season). I replaced with a DC because of everything I read on this thread and elsewhere on this site. I temporarily have it running off a brand new car battery with a 1A trickle charger on it. The when I turn it on the pump is almost silent (at least compared to the AC version which had a distinct hum/buzz of moderate volume). Battery measures 12.8v with the charger connected pump off, 12.5v when I turn the pump on. It only got to 32-33F today after a big freeze so tubing is still pretty much frozen, but the pump doesn't even seem like it's trying to pull anything and vac stays at zero, albeit there's no liquid in the diaphragm. It just seems too weak to me. Am I wrong and that's just how quiet the DC's are?

Huge flow coming tomorrow so I want to make sure I'm ready!

[mainebackswoodssyrup]

The pump will sound much different and be a little louder when it’s pulling sap. I’ve only ever run 12v pumps but you won’t get any vacuum with a dry diaphragm.

[BAP]

Firing up this thread with another question for those that have run both AC and DC.

My AC powered 4008 just died (new last season). I replaced with a DC because of everything I read on this thread and elsewhere on this site. I temporarily have it running off a brand new car battery with a 1A trickle charger on it. The when I turn it on the pump is almost silent (at least compared to the AC version which had a distinct hum/buzz of moderate volume). Battery measures 12.8v with the charger connected pump off, 12.5v when I turn the pump on. It only got to 32-33F today after a big freeze so tubing is still pretty much frozen, but the pump doesn't even seem like it's trying to pull anything and vac stays at zero, albeit there's no liquid in the diaphragm. It just seems too weak to me. Am I wrong and that's just how quiet the DC's are?

Huge flow coming tomorrow so I want to make sure I'm ready!

Have you tried setting it up so that it pumps some liquid through it to see if it is even working? Sounds like maybe it’s not working.

[MarquisVII]

Running fine now. Yes, I have a recirc but everything was frozen yesterday. Still amazed at how quiet this is compared to AC - it honestly sounds like it's barely on. I suppose the AC one was slowly getting louder as it was on it's way out, but still!