refrigerator - Fiberglass RV


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Old 03-21-2003, 03:17 PM   #1
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refrigerator

Does anyone have any experience with coolmatic fridges? I just got a new dometic which does not fit. I thought I was careful about measuring, but it is way too deep. I thought height and width were the only considerations and now I will have to pay shipping. So I will be more careful this time. I called trillium and they are installing coolmatic fridges that run off the battery or land line with converter. I like the idea as they are well suited to solar operation but I don't want to end up with another refridgerator I don't want/can't use. Any thoughts any one? Is there an advantage to gas power fridge, or would coolmatic be the way to go?
Thanks.
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Old 03-21-2003, 03:47 PM   #2
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Hi Maggie! :wave

I don't know anything about the coolmatics in particular, but do you know the amperage it will use when running on DC?

My Dometic pulls 10 or more amps per hour (someone please correct me, for I think it may be as much as 12). Since my solar panel only generates 3.1 amps under perfect conditions, you can see there's no way our set up would support it.

Doesn't mean it can't be done... A 3.1 amp panel isn't all that big (it's about 45 watts), and we just have a single house battery. Also our fridge is probably larger than what you're looking at (given that your dimensions are restrictive).

But, yes, running a refrigerator on propane is really a good way to go if you're planning on boon-docking.

I'm guessing Norcold doesn't make a fridge small enough, either? :nope
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Old 03-21-2003, 03:59 PM   #3
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get a 3 way fridge

Boon-docking......run the fridge on propane!!! :)

You'll spend more on a solar panel that'll feed it than the cost of the fridge. :o

Use the solar to replentish low amp electrical usage.

Two propane bottles and two batteries are helpful.

I have both a portable AC/DC fridge and a 3-way installed in the trailer.
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Old 03-21-2003, 05:21 PM   #4
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Portable AC/DC fridge

Don, your comment reminded me we have one of those electric coolers (ours is Igloo) that doesn't have a compressor, but runs a (loud) little fan and cools 30 or more degrees below the ambient temp.

So, I did a google for coolmatics and found:

Quote:
COOLMATIC MDC-50
* *
Capacity: 45 litres, including 4 litres freezer compartment
Voltage: * 12/24 volts
Average power input: * 45 watts
Power consumption: * at 5C interior temperature and 25C ambient temperature: 0,8 Ah/h, and at 32C ambient temperature: 1.0 Ah/h
System: * fully hermetic Danfoss BD35F compressor with integrated control electronics, low-voltage protection adjustable for consumer or starter battery, electronic fuse, automatic reverse pole protection, statically ventilated wire condenser, aluminium rollbond evaporator; mechanical, continuously variable thermostat
Material: body of plastic, middle section of coated sheet steel; inside door lining and interior: polystyrene (white); door with magnetic sealing, door with double lock (top and bottom), door for right or left mounting
Colour: door frame/body: grey; coated door panel (pale grey)
Insulation: 35 mm solid polyurethane foam
Delivery kit: * height-adjustable coated folding grille with locking shackles and fixture; interior light as standard
Weight: 15 kg
*
Ref. No. MDC-050
*
Accessory:
Ventilation panel
* *
Ref. No. 8000G-003
*

Contents, specifications and availability are subject to changes serving the technical improvement.
Notice it says at 32 C degrees, it only uses one amp/hour.

I dunno. Might work?

More info
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Old 03-21-2003, 05:41 PM   #5
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Wow, thanks for responding. It sounds like it might be a good thing. Does anybody out there have one of these coolmatics? I think norcold makes a model that will fit depthwise but the other measurements are off. I think we'll have to build a collar for whatever we get. I like the idea of a groovy coolmatic magic refrigerator, but there is a lot to be said for tried and true too.
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Old 03-21-2003, 05:52 PM   #6
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Well, Maggie, to be honest, if Norcold makes a 3 way that will work, I'm conservative enough to advise you to go with that - the propane feature is really that good!

But, maybe someone else will chime in here, someone who's seen one of these Coolmatics in action. Even at only 1 amp per hour, that's still 24 amp hours a day... which is significant. (But, like I said, it might work; you'd surely want two batteries. Do you have room for two batteries?)

If you do go the coolmatics route, I'll sure be interested in hearing your experiences with it!!

:sunny
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Old 03-21-2003, 05:58 PM   #7
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Maggi O
I like the idea of having propane on my fridge.I do have 2 Batteries on my unit but prefere Propane.
My 2Cents CDN:wave
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Old 03-22-2003, 08:26 AM   #8
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Quote:
Orginally posted by Mary F
that doesn't have a compressor, but runs a (loud) little fan and cools 30 or more degrees below the ambient temp.
30 degrees??? so if it's 100 degrees out your unit would be 70 degrees inside, unless you have the ac on. not good eough for most things. I ran a ref (on the large size) in Miss, once in 112 degree weather. everything stayed nice. ran propane in the day and elec. at night. propane at night would freeze the lettuce. I know I could have just turned it down, but I don't like the propane lighter light when I'm trying to sleep. :) usually ended up taping a paper over it. :lol
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Old 03-22-2003, 09:09 AM   #9
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Quote:
Orginally posted by Mary F
COOLMATIC MDC-50 * *
Capacity: 45 litres, including 4 litres freezer compartment
Voltage: * 12/24 volts
Average power input: * 45 watts
Notice it says at 32 C degrees, it only draws one amp. *
I don't want to rain on your parade:sad but power (P) equals current (I) times voltage (V) ie P=IE. Therefore an average input power of 45 watts at 12 volts requires approximately 4 amps of current.

Larry (x USAF electronics instructor)
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Old 03-22-2003, 09:57 AM   #10
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Hey, better to rain now!

Larry, I was just quoting the part where it says:

Power consumption: at 5C interior temperature and 25C ambient temperature: 0,8 Ah/h, and at 32C ambient temperature: 1.0 Ah/h


But I won't argue, it sounds too good to be true!

:cblob


p.s. I always preferred watts = amps x volts. But you're right. I didn't check their math this time. :wink
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Old 03-22-2003, 10:06 AM   #11
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Quote:
Originally posted by Thomas and Janifer

* * * * * * <div class='quotetop'>QUOTE
Quote:
Originally posted by Mary F
that doesn't have a compressor, but runs a (loud) little fan and cools 30 or more degrees below the ambient temp.
30 degrees??? so if it's 100 degrees out your unit would be 70 degrees inside, unless you have the ac on. not good eough for most things. [/quote]

Exactly, Jana. We got it to use in a motel. And in a motel room we were able to actually keep milk. BUT, the little fan is loud enough that we always had to set it in the bathroom, and keep the door shut... It does run on 12v, and with an extension cord we could (and did, but only a time or two) put it in the back of our pickup (we have a shell top), plug it into the truck's powerpoint. In summer, it really wasn't very effective... and we've not used it in years. There's a reason I had forgotten we even have the thing.

:sunny
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Old 03-22-2003, 12:07 PM   #12
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Koolatron cooler

We have a Koolatron which is the same type of cooler as Mary has described.

The fan is noticable but not a bother but our fan has been replaced and the old fan had gotten quite loud before it quit.

We use it in the van all the time and it keeps things cold. On the very hottest summer days it must be kept in the shade but there have only been a couple of times we found it didn't keep things cool enough. Then we add ice. We have a thermometer inside it and keep an eye on the temp on really hot days.

We even use it at Christmas when the house fridge is full.

It will run for about 4 hours off the van battery. Some people run them off a solar panel.
Nancy
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Old 03-22-2003, 04:05 PM   #13
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OK I think I'm getting a headache... I looked into the norcold with the depth of 21 inches. Our cabinet is 19 inches deep. The dometic which is sitting in the camper right now is 24 inches deep. Those three inches would make a big difference. So we were going to ship the dometic back and get the Norcold (or coolmatic) until...I noticed the advertised dimension of this dometic is also 21 inches deep. Does that mean the norcold is really also 24? I think we may keep this dometic and frame it in somehow. The longer it is in our yard the more we are bonding with. I don't like to pay shipping once let alone three times. I really appreciate the responses about propane. It seems there is an advantage to go that way.
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Old 03-22-2003, 06:34 PM   #14
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here's a link to norcolds conversion charts.

http://www.norcold.com/conversion_main.cfm

I think dometic also has one on their site. Personally, I prefer a 3 way fridge- ac/battery/propane- like the boy scouts--- Always Be Prepared !!!
Get it?( I know; my humour is strange)
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