> My two cents
>
> Some of the AC side problems On xantrax, schieder, ... systems I have come
> across were resolved after finding the right combination of firmware
> updates and/or full PCB swaps. If the SCP is relatively new compared to the
> inverter then they may not be "talking" the same xanb
Back to the original post. A commercial system doesn't mean they used
paving blocks. I have seen many that did not. Fly ash is also a product
of coal combustion that can be used to make a stronger concrete, though
it won't necessarily help in this case, as it is lighter.
On 6/30/2018 7:05 PM
Regular cement blocks absorb water, freeze thaw cycle destroys them.
Paving blocks are made with silica fume, denser than cement,dont absorb
water, don't suffer freeze thaw damage. They are designed for walkways and
driveways.
There are cement looking pavers , 12x12 x 2" ,also made with fume.
Any
I am pretty sure it is the freeze-thaw cycle that the blocks are exposed
to. I have inspected hundreds of system in the Northeast and this is a
recurringproblem. It has to be part of the maintenance protocols or
there will be insufficient weight to resist thewind uplift forces. Chris
On 6/30
Kirk,
Had the same thing happen to me on a commercial ballasted system installed
back in 2004. Had to be moved around to allow installation of a new roof
system. Replaced all the ballast in 2017. I'm located in Western NY, thus
the same weather you see. The blocks were on a stainless steel pan of
All,
I have a 6 year old ballasted roof system in which about 50% of the solid
cap blocks(16"L x 8"w x 4"D) are cracked and crumbing, some are close to
rubble. I assume it was a bad batch, but has anyone seen this before? What
might be the preventive remedy in the future? A coating of some sort?
Way too many issues when you mix equipment manufacturers. Do you want
torture?
Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail offgridso...@sti.net
text 209 813 0060
Dave John BlittersdorfDave
> Hello Group.
> I have a customer with
Hi all
I have 2 old mate 1’s, pre 4.0 firmware.
I just noticed on a new FNDC paperwork, a statement from OB that states they
will update any pre 4.0 firmware to latest rev. ( as the FNDC requires 4.0 or
better. )
When I called OB and talked to tech support, they said no, they wont cover it.
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