That's my call too, The Unirac TPM was truly an inferior product, and
would both change tilt and rotate on the pole in high winds. It needs to
be pinned to the pole and have bracing added to hold its tilt. The
other 2 look possibly home made, there are quite a few of those around;
folks have some welding equipment and go for it themselves. I recently
replaced a horrible home made pole mount made out of Unistrut, the whole
thing could barely hold up the weight of the modules. Yours don't look
too bad, but I would give it the old field test: grab out on one corner
and put your full weight on it to see how it behaves. I also like to
shake it up and down at the right frequency to see how it behaves too.
It really should be strong enough for a person to be able to crawl
around on it.
The tilt angle looks really extreme, many racking companies do not rate
their systems for tilt beyond 45 degrees.
Also, I would write up some disclaimer to release yourselves from
liability. It should note the substandard racking, the potential for
failure in high winds or snow loads, and that the customer has chosen
not to replace the racks.
Ray Walters
Remote Solar
303 505-8760
On 3/14/19 1:18 PM, Howie Michaelson wrote:
Not sure about the grey steel bracketed one, but the other 2 (?) look
like the old Unirac TPMs, which haven't been in production for more
than 15 years (?).
Howie
*Howie Michaelson
**Sun Catcher*
*****/NABCEP Certified Solar PV Installer™
/**
**Solar Electric Systems Sales & Service
802-272-0004*
On Thu, Mar 14, 2019 at 3:11 PM Lorenzo Ortiz <[email protected]
<mailto:[email protected]>> wrote:
Wrenches,
Anyone recognize these pole mounts?
We adopted a bastard system and are trying to bring it up to code.
Thanks
--
__
Loren Ortiz
Technical PV Design Specialist - Commercial/Residential/Off-Grid
[email protected] <mailto:[email protected]>
californiasolarco.com <http://californiasolarco.com>
*Main:530-274-3671 ext: 311 ****Fax:530-274-7518*
**
<https://californiasolarco.com/referral_form/>
*Showroom located at: 149 E Main St. Grass Valley, CA 95945*
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