[RE-wrenches] Battery changing on SW inverter

[Kent Osterberg]

Glenn,

Righthand Engineering <http://www.righthandeng.com/hm_swca.htm> still 
makes the memory backup device you are thinking about. I recommend going 
though all the menus before you work on the system and writing down the 
settings. You may even find that there are some settings that are not 
appropriate. Keep a copy of how you left the the system programmed in 
case there are ever any questions or need to reprogram it again later.

Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com


On 5/15/2012 1:44 PM, Glenn Burt wrote:
>
> Hello wrenches,
>
> I am quoting a job to do a simple battery bank replacement on an 
> existing system that has a Trace SW4048 inverter.
>
> I have not done any substantial work on these revered systems, but 
> seem to remember that removing the batteries will lose all the custom 
> program settings in the inverter.
>
> I seem to recall there was a product that could be purchased that used 
> a 9V battery to hold up the setting memory while the main batteries 
> were disconnected. Could anyone tell me the name of it?
>
> Or is there a better solution out there? I see a couple of products 
> that claim to read/write the SW memory from Right Hand Engineering and 
> Maui Solar Software -- anyone used them or recommend against them?
>
> Thanks,
>
> Glenn Burt
>
> glb, Consulting Company
>
> NABCEP Certified Solar PV Installer TM
>
> NYSERDA Eligible Installer
>
> Microsoft Certified Professional
>
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