Date: Tue, 26 Aug 2014 14:30:31 -0700
Reply-To: Rocket J Squirrel <camping.elliott@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Rocket J Squirrel <camping.elliott@GMAIL.COM>
Subject: Re: battery question
In-Reply-To: <20140826065520.2XEPL.46095.root@eastrmwml105>
Content-Type: text/plain; charset=utf-8; format=flowed
Now that I'm back . . .
Maybe someone with a greater knowledge of the inner workings of the
Dometic refrigerator can explain why the 12v element, which is rated at
the same wattage as the 120v element, doesn't cause the refrigerator to
get as cold as the 120v element.
--
Jack "Rocket j Squirrel" Elliott
1984 Westfalia, auto trans,
Bend, Ore.
On 08/26/2014 03:55 AM, mcneely4@cox.net wrote:
> Is that the experience you have? Lots of folks have made the same observation. Some even say that the 12V mode will not hold the refrigerator cold over time. Let's hear from some others on the matter. mcneely
>
> ---- Vanagon <camping.elliott@gmail.com> wrote:
>> Makes no sense. The 12v and 120v elements are rated at the same wattage, so they must get equally hot. Since it is heat that drives the ammonia cycle cooling system, both elements should result in the same amount of heat extraction.
>>
>> Last night in camp. Palestrina on the hi-fi.
>>
>>> On Aug 25, 2014, at 12:21 PM, Dave Mcneely <mcneely4@COX.NET> wrote:
>>>
>>> I have found that on 12V the refrigerator will not cool down, though it will hold a cold temperature if cooled first on 110V or propane. mcneely
>>>
>>> ---- Mike Miller <mwmiller6@ATT.NET> wrote:
>>>> Still see 13 + volts so I'm not sure the electrics are hooked up correctly. The frig light is lit though. Maybe it just takes longer than 3 hrs to cool the thing but the fins inside were only slightly cool and that could have been the result of the cold water bottles I loaded it with.
>>>>
>>>> Mike
>>>>
>>>>
>>>>> On Aug 25, 2014, at 7:29 AM, Vanagon wrote:
>>>>>
>>>>> What do you see for a voltage on the house battery with the engine running and the reefer turned on and set to the 12vdc mode?
>>>>>
>>>>> Sent from over my first cup of coffee.
>>>>>
>>>>>> On Aug 24, 2014, at 10:36 PM, Mike Miller <mwmiller6@ATT.NET> wrote:
>>>>>>
>>>>>> Vanites,
>>>>>>
>>>>>> Went camping for a week in my 87 Westfakia Syncro TDI. Put the frig on battery for the drive up hoping to get a air flow current started.
>>>>>>
>>>>>> It didn't seem cold when I got there but it did light right off on propane, which normally doesn't happen.
>>>>>>
>>>>>> And my coach battery was almost drained.
>>>>>>
>>>>>> When I measured the voltage at the house batter it was 11.4 or so and the engine battery was 12.5 or so, with the engine off.
>>>>>>
>>>>>> With the engine running the house battery voltage was 13.1 or 2 and the engine battery 13.7 or so, regardless of rpm.
>>>>>>
>>>>>> Bad battery?
>>>>>>
>>>>>> Bad charging relay?
>>>>>>
>>>>>> Bad juju?
>>>>>>
>>>>>> Mike
>>>
>>> --
>>> David McNeely
>
> --
> David McNeely
>
>
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