Approximate age please..... [RE-wrenches]

Mon Aug 2 19:35:05 PDT 2004

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Hi y'All
Johnny Hill at Sierra Solar sold lots of that vintage ARCO modules.
His URL is http://www.sierrasolar.com/

cul  deant

Windy Dankoff, Dankoff Solar wrote:

>
>
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> John,
>
> Are they 1 X 4 foot modules?
>
> What is the model number?
>
> Windy
>
>
>
>
> On Aug 2, 2004, at 5:01 PM, Dan Rice wrote:
>
>>
>> John,
>>     Sounds like you have Arco M-51's, although, from my old notes, 
>> the Arco
>> 16-2300 was very similar if not identical. If it's either of these, 
>> they're
>> 35 mono-crystalline cell modules -two outside rows of 12 cells and 
>> one row
>> of 11 cells in between. In the Home Power archive, Issue 36 (Aug/Sept 
>> 1993),
>> P.1 shows an  AEE ad listing "10 year old M-51 modules from a Washington
>> State Utility Company." That would place production sometime around 
>> 1983.
>> The ad pictures something that looks potentially correct, though it 
>> lists
>> them as 36-cell (the photo image looks like a 33 cell 16-2000, but it 
>> also
>> looks like it's been cut off at the bottom). The ad also claims peak 
>> output
>> of 2.4 A @ 16.5V, which is close to 40 W. The M-51's I saw were not 
>> labelled
>> with performance specs.
>>     Home Power Issue 33, page 24, shows a photo of the inside of the 
>> M-51
>> J-box I believe you're referring to. The caption on the photo begins 
>> "This
>> ancient module has one of the finest junction boxes we surveyed." I 
>> guess 10
>> years old meant "ancient" back then. Now that's just broken in.
>>     The 16-2300's I saw were labeled by Arco with the model number
>> (16-2300), but they're identical to the M-51 in size, number of 
>> cells, and
>> J-box. The only two I've seen were re-labeled  "Tested and warranted by
>> Dankoff Solar Products, Santa Fe, NM. Nominal Volts 12, Amps: 2.2, Peak
>> Power 33 watts at 16 volts." Windy may remember back that far; it's 
>> before
>> my time in this line of work.
>>     BTW, I recently had need to find data on Shell SQ-80 modules (last
>> year's model, not the new "P" version). Shell has seen fit to delete web
>> access to data sheets for all of their products except current 
>> production.
>> They claim that providing spec sheets on modules that are no longer
>> available caused too much confusion among web site visitors. Never 
>> mind that
>> wrenches might actually want to match their new products to last years'
>> offerings. Those who use Shell products might want to let Shell know 
>> that
>> dropping access to information is counter productive. (I'd love to 
>> see data
>> sheets on all of the old Arco/Siemens/Shell products -there are 
>> plenty of
>> them out there -what would be the harm?) BP has recently dropped their
>> technical notes section from their web site also -a pretty sad industry
>> trend. (I've griped to both companies -the tech support folks sound
>> receptive to the concern -let your voice be heard, fellow "consumers").
>>
>> Dan Rice
>> Abundant Sun, LLC.
>
>
>>
>> ----- Original Message -----
>> From: "John Veix" <john at gosolar.co.nz>
>> To: <RE-wrenches at topica.com>
>> Sent: Monday, August 02, 2004 2:10 PM
>> Subject: Approximate age please..... [RE-wrenches]
>>
>>
>>
>> Hi all,
>>
>> I've just inherited a system that has 14 of ARCO 55w panels - they 
>> have the
>> big round junction box with 4  connectors inside.
>>
>> What would their approximate age be please.
>>
>> They are working fine, just a reduced output. A couple of the mounting
>> junction boxes came loose and had to be re-glued back on.
>>
>>                                 thanks a lot,
>> John V
>>
>>
>>
>>
>>
>
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