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Subject Topic: Help me identify my fridge winter cover Post Reply Post New Topic
Message posted by chrisnsteffie on 11/9/2017 at 5:29pm
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Hi all,

Towed the caravan to endless places, some trips spanning into the thousands of miles through different countries. The winter cover for my fridge has never budged. Took it a mere 90 mile trip and found it had done a runner!

I need your help identifying it, because I'm all out of ideas. The fridge is a Thetford Norcold N80.

This is what is on the outside of my caravan:


And a close-up:


A Thetford vent apparently looks like this:

Which looks nothing like my vent.
I bought and returned a Dometic vent cover, as it looked similar in the shop, however, they are slightly different - the Dometic removable cover being more curved than the one I need:


Any ideas what brand it might be? Don't see the point in replacing the entire top vent if I can simply find the right cover. Tempted to give 3D printing one a go in the future!

Many thanks

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Message posted by Grampian91 on 11/9/2017 at 7:22pm
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Thats not what i would call the winter cover, its the exhaust cover or flue cover.

The winter cover is the large white panel in the last picture. (front left, the long piece)





Vents seem to be labelled LS100, LS200 or LS300.



Post last edited on 11/09/2017 19:38:57

-------------
Post 1997 licence holder?

Max tow weight = Cars gross laden weight + Caravans gross laden weight.

These 2 figures must not exceed 3500kg. And the Caravans gross laden weight must not exceed the cars UNLADEN weight.

Unless the manufacturer has set a lower limit.

Message posted by chrisnsteffie on 11/9/2017 at 11:13pm
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Thanks for the reply. I had not realised the difference, now I do.

Your information lead me to this PDF, which lists the part I am looking for (pg38, 3C in the exploded diagram), however, it doesn't have a part number.
I had a search for any of the words used for the flue insert/cover, but to no avail.

The only thing I can think left to do is to 3D print one?

It's a pain, the Dometic and Electrolux ones are easy to find!

Message posted by blueexpo97 on 12/9/2017 at 7:39am
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Might be worth sending your pictures to this company, they might be able to help. They are very good to deal with.

-------------
XV yes?

C40 (not B40)
How does a sage know everything about everything? or does he? or does he just think he does?
Remember, if you buy something you bought it, not brought it.

Message posted by Geoff48 on 12/9/2017 at 9:20am
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I've never had a Thetford fridge so my information is internet based only however it seems that the earlier Thetford fridges did not have an exhaust leading from the fridge through the top vent as you do with Dometic (formerly Electrolux). There were many issues with Thetford regarding sealing the fridges to prevent the exhaust fumes entering the caravan. Your pictures show a vent with an exhaust escape so this doesn't tie in with the above information. If you don't get the information from bluexpo's link I'd suggest contacting a Thetford premier service centre. This link gives details   Thetford

Message posted by chrisnsteffie on 12/9/2017 at 5:16pm
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Thanks for the suggestion, blueexpo97 - I've just given them an email, and will await their reply.

Geoff48 - I had read the same, which did initially have me worried, luckily I can see that mine is vented to the outside. I'll give your link a try if blueexpo97's doesn't yield any results.

Thanks thus far!

Message posted by Grampian91 on 12/9/2017 at 6:08pm
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My first thought was 3D print one, but the exhaust is right there and may actually melt a 3D printed part, unless you line the inside with a heat resistant material.

One of the best things i have bought is a 3D printer.

3D printed the endcaps for some LED lights which also houses the on/off switch. A tidy and neat install if i say so myself.





-------------
Post 1997 licence holder?

Max tow weight = Cars gross laden weight + Caravans gross laden weight.

These 2 figures must not exceed 3500kg. And the Caravans gross laden weight must not exceed the cars UNLADEN weight.

Unless the manufacturer has set a lower limit.

Message posted by chrisnsteffie on 12/9/2017 at 7:35pm
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I'll see what the above suppliers say, and then look at crafting one if needs be!
PLA is good to what, 65c, or there abouts. No idea what the exhaust of the fridge would be, I'm assuming it'll be ambient temperature + how cold the fridge is internally + some overhead. Could be wrong on that one though!

Your LED light caps sound cool! 3D printers are perfect for that kind of custom design.

Message posted by Grampian91 on 12/9/2017 at 7:48pm
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Ive seen PLA melt in a hot car. The exhaust temperature will be way above most 3D printed plastics except maybe the stuff that tends to print at 260c+. But that brings its own issues.

The exhaust on the fridge when runing on gas will be very hot. Like sticking your hand over the exhaust of a hot engine.



-------------
Post 1997 licence holder?

Max tow weight = Cars gross laden weight + Caravans gross laden weight.

These 2 figures must not exceed 3500kg. And the Caravans gross laden weight must not exceed the cars UNLADEN weight.

Unless the manufacturer has set a lower limit.

Message posted by chrisnsteffie on 04/10/2017 at 5:55pm
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So, all done with 3D printing one. I exhausted every option I could find for buying one, so, I made one.


First I got the rough size of the cover by measuring the inside of the vent hole (Mk1):


Then, I added in the angle, and adjusted the notch at the bottom (Mk2).

Once I was happy it was a snug fit, I went full size, here it is in action:

The colour is slightly off, but the friction fit is nice and tight. It didn't come off as cleanly as I had hoped from the printer, but I'm happy with it.

Took the caravan out last weekend, and it worked fine. Had the fridge on gas (don't usually have EHU unless its 10C or less outside), and it didn't melt into a puddle, which is what I would have expected. It did warp slightly, it now has a curve to it, I suspect this is due to the tight fit and the heat.

All-in-all though, worked out pretty well.


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