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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