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Topic ClosedStarting fridge on propane

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Direct Link To This Post Topic: Starting fridge on propane
    Posted: 19 Apr 2021 at 6:18pm
It should work ok to install the battery in the morning. Then start the fridge on propane so it cools down as fast as possible. Not on 12v which provides much less cooling effectiveness. There is very little thermal mass in the fridge box and components, it's mostly in the food and liquids so if you put those in cold you should be ok. Might want to put in the battery temporarily a couple days before for a half hour or so to be sure the fridge and everything else is working as it should.

When I had my airplane I used to keep an rv in at a mountain airport and flew in, turned on the fridge, went to the store, put in cold drinks and groceries, and went camping. Worked fine and saved many hours of tedious driving.
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Direct Link To This Post Posted: 19 Apr 2021 at 6:18pm
The purpose of a lock is not to make it impossible for someone to steal the battery, but to make it inconvenient enough that the thief decides to look elsewhere.
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Direct Link To This Post Posted: 19 Apr 2021 at 6:10pm
I had a feeling it would be a bad idea to leave the cover on.

I can’t really take the trailer to a friends house because that’s not an option. I do have the battery in a case and I have a locking cable on it but it won’t hold up the ball cutters. I put it together that way basically to keep someone from taking it while in route.
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Direct Link To This Post Posted: 19 Apr 2021 at 6:00pm
It would be a bad idea to start the refrigerator with the cover on because it would block the needed airflow. You could put a chain around the battery with a lock. That would help. Is the battery bare or in a case? You could check out version 1 and version 2 of the battery lock-down system I made. Now I don't use it because the LiFePO4 battery I installed is inside and out of sight.
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Direct Link To This Post Posted: 19 Apr 2021 at 5:55pm
Could you safely leave your R-Pod at a friends house for a day or two before you leave?  At least that way you could run the fridge off your new battery and make sure everything is working satisfactory before leaving.  Sorry to hear about the thievery going on - a sign of our society unfortunately.

Not a good idea to block the airflow from your vents, after ignition/firing of gas at the combustion chamber, heat goes up through your chimney, air temp increases behind the fridge, your bi-metal switch engages causing your muffin fan (s) to kick on and commence the cooling process.  If vents are covered, the above will still happen but the fans will not be allowed to bring in cool air from below and expel the hot air from above causing the cooling ability to be severely restricted.
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Direct Link To This Post Posted: 19 Apr 2021 at 5:21pm
Haven’t put any screens in, but that’s a good idea. I’ll get the compressed air and try that. I’m sure there’s bugs up in there. They’re everywhere.

Kind of hesitant to install the battery on Sunday, the day before the trip, because the storage yard is fairly dark and there have been problems with theft. Just last week I came over and found the both my storage compartment doors had been opened and some of my stuff thrown on the ground and everything rifled through. Doesn’t look like they stole anything, but I’m having a locksmith come out today to replace the universal locks with better key locks including replacing the thumb locks with key locks.

The last thing I want to do is install a $130 battery and then have it stolen that night! I might just do it Monday morning and put all of our food into an ice chest in the back of the truck until we get up into the redwoods.

I have a cover over the trailer, but I’m thinking I should remove that before I start the fridge because I don’t want to block airflow. It would hide the battery on the tongue though. Can I start the fridge on propane first and then remove the cover of the following day? Or is that a bad idea?
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Direct Link To This Post Posted: 19 Apr 2021 at 5:09pm
Have you installed screens over your two vents on the rear side of your fridge?  If not it would be highly recommended to purchase a can of compressed air and blow out the spot around the combustion area as well as up the cooling stack, from below, as well as from the top of the cooling stack, shooting air down.  It only takes a small spider web or bee nest or other debris to cause the fridge to perform less than optimal or not at all.

If things look pretty clean behind your fridge then try to light it with your new group size 27 battery and make sure you have some propane in your tank and that it is turned on as well.  If it lights after one or a few attempts, you should be good to go.
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Direct Link To This Post Posted: 19 Apr 2021 at 4:32pm
Thanks all. I need to buy a new battery because even though I’ve been putting the trickle charger on my original deep cycle battery it no longer holds a charge anymore. I noticed that last year when I tried to move the trailer and the battery wouldn’t operate the power lift. So I need to get a new battery at work. Luckily we are an AC Delco distributor and I can get an M 27 Marine battery at cost. I guess I will install a battery this coming weekend and start the fridge. I know some people have had maintenance issues when their pods have sat for a long time and the fridge won’t light. Is there anything I should clean or look at before hand? Thanks all.
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Direct Link To This Post Posted: 19 Apr 2021 at 4:28pm
I always start my 'fridge on gas the day before I leave and switch to battery on the road.  I believe the owner's manual (such as it is) tells you to do that.  There is enough power available through my 7 circuit trailer wiring to maintain the battery.  This works quite well. 

I use a simple solar panel/controller to maintain my battery in storage. 

Controller
https://smile.amazon.com/gp/product/B004Q820UK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Panel
https://smile.amazon.com/gp/product/B01IFJ73X4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

i have a battery disconnect.  A larger panel, or a sunnier location and this system would keep the battery up without a disconnect. 
John
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Direct Link To This Post Posted: 19 Apr 2021 at 3:50pm
Good to hear you are all vaccinated up and ready to begin to pod! Now I can't answer your question directly as we are awaiting our 192. But, from what I have noted as I have perused many of the discussions here I will try to touch on some important points to help you out.

First, is your trailer level? It must be less than 3 degrees away from level for the propane flame to operate the system properly...damage can quickly occur to your trailer fridge cooling system if it is at more of a tilt than that (damage may occur in as quickly as 15 or 20 minutes from what I have researched).

2nd, is your TT battery(s) fully charged? If it doesn't have a solar panel and charge controller on it and you haven't brought your battery(s) home to charge for an extended period of time (or even a few days if you have no battery isolation switch on your TT), your battery(s) may be low or discharged. And you need battery power to operate your fridge on propane and for it to last until you hook up to leave.

So, if all is good so far I would say you would be able to use your propane to precool your fridge, as long as you don't precool it for a week, and I don't think that is your plan.

From prior experience and also again from other posts her on the forum, make sure you are only putting things in your fridge/freezer that are already cool/frozen. Don't try to use the trailer fridge/freezer to cool or freeze items, you may be asking too much from it! Make sure it is all cold before putting it in before you go.

Hope this has helped and you have a great trip!

ANDY

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