Engel on 24v?

Submitted: Saturday, Feb 03, 2007 at 23:15

ThreadID: 41942 Views:7676 Replies:5 FollowUps:7

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Leroy

Any one done this and does it perform any better? (i reckon it performs great on 12v)

Leroy

Reply By: furph - Sunday, Feb 04, 2007 at 07:45

Sunday, Feb 04, 2007 at 07:45

Your Engel is only kidding you, it doesnt run on 12v. at all, it runs on 240v. all the time.
The 12v. input is to an invertor which provides the 240v. 50 htz.a/c . The compressor piston pump is similar to those 240v. airless spray paint guns
furph

AnswerID: 219582

Follow Up By: Leroy - Sunday, Feb 04, 2007 at 09:47

Sunday, Feb 04, 2007 at 09:47

now that sounds like a furphy!

Leroy

FollowupID: 480161

Follow Up By: bobsa - Sunday, Feb 04, 2007 at 11:46

Sunday, Feb 04, 2007 at 11:46

Hi,
The Engle runs a Swing compressor,and this operates on 20 volts AC 50 hz.
This compressor has a permanent magnet a one end and the piston has a electromagnet attached to it. When voltage is applied the piston vibrates at 50 times a second .The piston is the only moving part and the unit can operate on quite extreme angles.
The new engle can operate on 240, 12, 24 volt ,they will sense what the voltage is, and run. This means that you can connect both power leads at the same time ( 240 and the 12/24 volt lead) and it will look first for 240 then secondly 12/24 volts
The old engle will not do this and are rated for 240 volt, 12 volt only, or 240 volt 24 volt only.
Remember most things run on smoke once it leaves the appliance they are normally stuffed.
So watch your voltages on the old model engle.
Regards Bob

FollowupID: 480191

Follow Up By: hoyks - Sunday, Feb 04, 2007 at 12:07

Sunday, Feb 04, 2007 at 12:07

My wife found if you push really hard you can make the 240V plug fit in the 12V socket.

Not recommended. There was a flash, all the lights went out in the house and the magic smoke escaped.

It took the fridge repairer a while to sort it but it runs again, just no inbuilt circuit protection anymore.
The fridge is 30 years old now so when it goes next time, I think we will have a do not resuscitate order on it.

FollowupID: 480198

Follow Up By: Leroy - Sunday, Feb 04, 2007 at 18:35

Sunday, Feb 04, 2007 at 18:35

geeze Hoyks lol ...ah women what can you say....I'm still chuckling!

Leroy

FollowupID: 480275

Reply By: burnsy - Sunday, Feb 04, 2007 at 09:51

Sunday, Feb 04, 2007 at 09:51

Leroy I too have pondered over this question so I tried it.
I found that the compressor seems to run harder & I definitely noticed that it ran for less time to maintain temp. This could be attributed to less voltage drop due to less amperage draw. If you run your engle on 12v & change to 240v you will notice a difference in compressor speed. My Engle compressor definetly does NOT run on 240v. Another thing I have done is mount a computer fan on the inside of the caseing that is wired in parallel to the compressor. This seems to help also with efficiency & it is 12v & still running ok. I am no expert but enjoy fiddleing around,some things work & some things don't.

Regards Mike.

AnswerID: 219595

Reply By: Polaris - Sunday, Feb 04, 2007 at 10:41

Sunday, Feb 04, 2007 at 10:41

We have an Engel 90L upright in our motorhome - running on 24V. Because the current draw on 24V is half the draw on 12V, then the fridge can be wired with much smaller diameter wire.
Voltage losses due to wire size (as a percentage) on 24V are lower than 12V and resulting reduced performance will be less noticeable.
Our motorhome has 24V as well as 12V, but i use the 24V system for fridges and pumps, simply because they work better. Even use 24V/240V inverters - because the current is half of a 12V version for the same watts output.

AnswerID: 219612

Reply By: Member - Pesty (SA) - Sunday, Feb 04, 2007 at 10:51

Sunday, Feb 04, 2007 at 10:51

There are thousands of car fridges in trucks running all over the country, most would be 24v.
We have one running in our fire truck, but dont think it works any better.

Cheers Pesty

AnswerID: 219616

Reply By: furph - Sunday, Feb 04, 2007 at 18:28

Sunday, Feb 04, 2007 at 18:28

Also, the fridge units using the Danfoss compressor have an a/c motor. The motor is an induction type (no commutator), exactly like a normal domestic fridge except it works on a voltage (nom) 12-24. The electronic controller senses the supply voltage (12 or 24) and converts the dc input to a modified sine wave a/c to run the compressor.
furph

AnswerID: 219715

Follow Up By: Leroy - Sunday, Feb 04, 2007 at 18:36

Sunday, Feb 04, 2007 at 18:36

engel doesn't use a danfoss compress but the sawafuji swing motor.

Leroy

FollowupID: 480277

Follow Up By: furph - Sunday, Feb 04, 2007 at 20:00

Sunday, Feb 04, 2007 at 20:00

Sorry leroy, should have been more clear in my post.
I am referring to the all the other units, Waeco, Trailblaza, etc. etc. which have the Danfoss compressor.
If you can find a sectioned view of the Engel compressor pump you would see what I mean by its piston being activated by an alternating current power source, not a rotating induction motor
I could stand corrected on current mod. Engels being 12/24v. dc as well as 240v. ac. (mine is 12/240v. only)
furph

FollowupID: 480300

Follow Up By: bobsa - Monday, Feb 05, 2007 at 09:46

Monday, Feb 05, 2007 at 09:46

Hi, Furph,
Just had a look at my Engle Id plate on the back as follows, manufac. date 2002,
Model MT35F-G4 ( AC240v 50 hz. DC12/24 ) AC/DC automatic switch over.
This is the dark grey one .
cheers
bob

FollowupID: 480413