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AcuTemp Refrigerator

Third From Texas

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Interesting!! So I assume each port goes to one battery with a 12 volt charger? Could a 24 volt charger be used so only one plug is needed or wired I wonder. I see how that will work as it wouldn't be any different for the acutemp with the batteries hooked up and charged and being charged at the same time if that makes sense. No damage would occur to it and the fan wouldn't run all the time. I guess a basic trickle charger for a motorcycle is all that is needed, they use that style plug too. Great upgrade!! Not expensive either. I'd bet it could be used in the other direction as well if you can pull 12 volts from one battery for a phone charger if need be but I'd only use it that way if it were getting external power.

The batteries are independent on that side of the box. They are not in series (so not 24v) and not even in parallel. The unit will in fact run off 12/24v (even solar) thru it's internal controller. I just didn't want to push a charge thru that controller w/o knowing what it might fry.


I just top off each side with a couple small 1a NOCO chargers.


You could get two of those for half the price on a single charger that would push 5a to each.
I run this one on my LMTV and it's a great charger.


But for the smaller equipment I use the 1a chargers..
 

Third From Texas

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Great upgrade!! Not expensive either. I'd bet it could be used in the other direction as well if you can pull 12 volts from one battery for a phone charger if need be but I'd only use it that way if it were getting external power.
Yeah, I added a USB 3 charging port inside the cooler. But I only use it when the unit is either pulling from the truck or solar. As you said, the damned thing will stop charging if even one battery gets low.

I tapped it back to a single battery.

Seemed like a nice place to set your phone while charging.. Still puts out a god bluetooth signal from in there and I can hear it if it rings. I feel safer at the beach having the phone out of sight anyway.


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WWRD99

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Yeah, I added a USB 3 charging port inside the cooler. But I only use it when the unit is either pulling from the truck or solar. As you said, the damned thing will stop charging if even one battery gets low.

I tapped it back to a single battery.

Seemed like a nice place to set your phone while charging.. Still puts out a god bluetooth signal from in there and I can hear it if it rings. I feel safer at the beach having the phone out of sight anyway.


View attachment 905398
As many times I've had those batteries out I never noticed they weren't wired at the batteries for 24 volt...makes this charging setup much easier. A small maintaining charger would work perfectly.

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thewams

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Before I even ask a question, thanks so much to everybody here who provided technical input on this thread. I've read through the whole thing and making notes as I'm the new owner of an AcuTemp AX56L that I got off GovPlanet.

Sadly, mine was one of the units where they decided to drain the refrigerant, and unfortunately they did more than just a pinprick. There's one spot of the copper tubing that's punctured and crushed. My plan is to cut out the damaged section and solder in a new piece. What I'm wondering about is the recharge. Has anybody soldered in a charging valve or some other mechanism for making follow-up services easier? I'm starting at square 1 learning about refrigeration, so quite possible that my idea sounds totally stupid to the folks with more experience. Happy to hear it if it is! :LOL:
 

WWRD99

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Before I even ask a question, thanks so much to everybody here who provided technical input on this thread. I've read through the whole thing and making notes as I'm the new owner of an AcuTemp AX56L that I got off GovPlanet.

Sadly, mine was one of the units where they decided to drain the refrigerant, and unfortunately they did more than just a pinprick. There's one spot of the copper tubing that's punctured and crushed. My plan is to cut out the damaged section and solder in a new piece. What I'm wondering about is the recharge. Has anybody soldered in a charging valve or some other mechanism for making follow-up services easier? I'm starting at square 1 learning about refrigeration, so quite possible that my idea sounds totally stupid to the folks with more experience. Happy to hear it if it is!
Charging you'll need a basic kit to hook up with. That's easy...one can of r134a. Tough part is you'll need vacuum to charge properly. You can buy one of those too. You can take it to a shop and let them charge it but I'm not sure what an auto shop would charge plus if it leaked out you have to fix that and charge it again. I bought this kit a long time ago when I did remote repair for ac in cars. People come to me now but I still do rv rooftop ac and I don't have room for them to be parked all over so I'll go to them most of the time. I fixed a ton with that set. It only takes, I think, 10 ounces of charge...but I'm not sure. I don't go by weight and use the guages and temp output to set how much it needs anyhow. Creep up on what the guages say and stop. You definitely don't want to over charge these those little compressors get really mad if you do. A cooking scale will work so you know how much you've put in for that since I doubt you know exactly how to read the guages. It's not magic really. Post up pics of the damaged pipe. It should only be a pin hole but sounds like they got nuts on something.


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thewams

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Post up pics of the damaged pipe. It should only be a pin hole but sounds like they got nuts on something.
Yeah, I don't know what the hell was goin on, but somebody definitely didn't care about re-use. Included here are two pictures of the damaged tube section I need to replace, and one picture of what I'm guessing is where they charged it from the factory. I don't know if it's helpful or just overkill to try to add a serviceable charging valve. It's going to be a non-trivial repair to get new tubing soldered in anyway, so I figured while I was at it, I'll try to future proof for easier maintenance as much as I reasonably can.

And I didn't even think about compressor oil until I read this thread. Hopefully all they did was mangle the refrigerant line. Will be pulling the whole apparatus out to be certain.

Win some lose some with these auctions. Hopefully at a grand total of $200 I'll still be able to salvage a win with this.ax56l_copperdamage_1.jpgax56l_copperdamage_2.jpgax56l_factory_charge_location.jpg
 

WWRD99

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York Pa
Yeah, I don't know what the hell was goin on, but somebody definitely didn't care about re-use. Included here are two pictures of the damaged tube section I need to replace, and one picture of what I'm guessing is where they charged it from the factory. I don't know if it's helpful or just overkill to try to add a serviceable charging valve. It's going to be a non-trivial repair to get new tubing soldered in anyway, so I figured while I was at it, I'll try to future proof for easier maintenance as much as I reasonably can.

And I didn't even think about compressor oil until I read this thread. Hopefully all they did was mangle the refrigerant line. Will be pulling the whole apparatus out to be certain.

Win some lose some with these auctions. Hopefully at a grand total of $200 I'll still be able to salvage a win with this.View attachment 927570View attachment 927571View attachment 927572
That one kit I posted has 2 ports you can install in this. Did yours come with the manuals? That looks like they pierced it 2x in one spot...I'd try one of those valves on the line before I'd replace the line...you can pop the pin out when you install it and hit one of those holes. It has a good chance to cover that up and not leak. I've seen worse. Are your batteries good? They're around 160 a pair now. You'd probably have to buy those irregardless though. If you can find someone that has the vacuum you could borrow for a day you'd be out under 50$ to charge it. I don't think I'd worry about oil right now. Those compressors don't like to let it out unless you turn it upside down. Not sure if you've ever moved a fridge but did it on its back instead of straight up...gotta wait a few hours for the oil to get back into the compressor.

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