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Old 07-08-2012, 11:54 AM   #15
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68-I think people get paranoid when the Owners Manual says not to do it. Just covering their behinds I guess.
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Old 07-08-2012, 12:02 PM   #16
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Look up you model # and check the 120VAC amp requirement from what I can see the maximum AC draw is 2.7@120VAC .

http://gasrefrigeration.net/dom_techdata/MAN_SM.PDF

Your heater element in watts is probably in the 250/325W range.

This would put you in the 400/500 inverter range.
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Old 07-08-2012, 04:45 PM   #17
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Hi everyone, Protagonist- I will look into the Nova Kool products. That sounds sounds real good, thanks. redwoodguy- this is what we are used to doing and what we will do on our upcoming trip. It's a 14 hour drive from home, across the Nevada dessert so you can all see how this got started. We first work with what we have....don't want to be trying anything new on that kind of a trip and put the meds, TV and Airstream in jeopardy. We'll save that for the Salt.
Good luck on your trip!
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Old 07-12-2012, 08:10 AM   #18
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Hi everyone, Woosh-you jumped to the wrong conclusion, there is no owners manual, it's a 1959. Take your opinions and jump somewhere else. Garry-Thank you for this. I'll see what the unit draws and take it from there. It's going to be a portable cooler for the desert trip as of now. redwood guy- thank you.
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Old 07-12-2012, 08:28 AM   #19
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Our ref. does go out sometimes when we run it traveling. Does not restart. It just says "check". I do run it when traveling sometimes. But have that nagging feeling that it is a risk. We give up most of the freezer space and keep a couple of sacks of blue ice frozen up there. Keeps it cool when we do not run it.
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Old 07-12-2012, 08:49 AM   #20
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Why do we men feel, at times, we need to reinvent the wheel? We're all guilty at one time or another.
Some little quotes come to mind;
K.I.S.S. and If it ain't broke, don't fix it.
Good luck.
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Old 07-12-2012, 09:09 AM   #21
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Why do we men feel, at times, we need to reinvent the wheel?
Because the wheels we've seen aren't good enough, and we're all convinced we can invent a better one.

Alternately, because we can't ask for directions and so can't find the place where they sell pre-invented wheels.
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Old 07-12-2012, 09:28 AM   #22
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Steve Jobs might have been a master at Keeping It Simple but he wouldn't have stood still for the worn out Ain't Broke maxim.

He was a master at giving us what we didn't know we didn't have.

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Old 07-12-2012, 02:00 PM   #23
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Just to add some Real Word experience to the subject of the thread:

I am passing through Toronto, enroute Newfoundland, and left the rig on a shopping centre lot last nite at 5 pm, the LG 110v household fridge left powered by the inverter.

I returned today at noon, 19 hours later. The fridge was still at 38F and the batteries at 12v. The electric jack sounded normal when I hitched up.

So I don't know yet just how long the batteries can maintain this fridge but it is obviously a good long time, longer than most enroute jumps between shore power.


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Old 07-12-2012, 02:40 PM   #24
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Hi everyone, Woosh-you jumped to the wrong conclusion, there is no owners manual, it's a 1959. Take your opinions and jump somewhere else.
How pleasant.
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Old 07-24-2012, 08:44 PM   #25
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We have a 65 Overlander, and I have never been able to keep the pilot lit on our original refrigerator while driving? I run it on power before we leave, light it before we hit the road, and by the first stop, whoala, no pilot...Any tips and or hints?
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Old 09-30-2012, 11:27 AM   #26
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Lightbulb

Well, we're talking two different kinds of refrigeration here.

The propane/120V units are absorption cycle, which is great if all you have a bulk energy source, like 120 VAC or propane. They are ridiculously inefficient, using some like 2 BTUs of heat to produce 1 BTU of cooling - that's why trying to run them off a battery is a bad idea.

The LG unit is a Carnot cycle, with a compressor and the like. It runs only on electricity, and uses probably on the order of 1/2 a BTU to produce a BTU worth of cooling. If all you have is electricity, this is the way to go. They're obviously a lot safer, too.
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Old 09-30-2012, 11:30 AM   #27
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We have a 65 Overlander, and I have never been able to keep the pilot lit on our original refrigerator while driving? I run it on power before we leave, light it before we hit the road, and by the first stop, whoala, no pilot...Any tips and or hints?
As a professional firefighter, you're probably intimidating the flame.

Seriously, do you still have the removable shield around the burner and the little slidy door thingy at the pilot lighting hole? You may be getting enough airflow while you're driving to blow it out.
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Old 10-01-2012, 07:08 AM   #28
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FWIW I did actually try this on one of our trips. It was when we were going to the Outer Banks, during which we go through a tunnel that requires the propane to be off. It basically worked, with a couple notes:

1. We have a large solar system atop the trailer.

2. However, it was overcast and we hit some rain that day.

3. The batteries were run down pretty far when we got to the campground. This didn't bother me - we really should "use" those batteries more than we actually do; they'd probably last longer if we did. We have three batteries in ours.

I'd do it again, but only for the shortest stretch possible. I wouldn't make an extra stop to switch back to propane, but I would switch back at the next planned stop. As was theorized above, there just wasn't enough power to keep the batteries charged. (Of course, had it been a sunny day, the equation would be different for our trailer. They'd probably still get run down, but not as quickly. On the other hand, if it's overcast, you probably don't need to worry as much about the fridge in the first place.)
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