Re: [RE-wrenches] PV output but no power

[Kevin Pegg]

I can also commend Kyocera's excellent customer service re: the KC120 failure 
issue. We had one site that involved a large crane on a barge to access panels 
perched up on tracker on a rock bluff by the ocean - and they covered 100% of 
the costs for that, several thousand, which was clearly above and beyond 
warranty obligations.

Kevin

From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of Starlight Solar Power Systems
Sent: July-02-16 3:55 PM
To: RE-wrenches 
Subject: Re: [RE-wrenches] PV output but no power

The dates of the defective KC-120-1 (and KC-80-1) are from late 1998 to Dec. 
2002. Any modules in the date period will be replaced at no cost by Kyocera. 
Talk about amazing commitment to the customer, these modules only had a 1 year 
defect warranty. 15 years later and they are still replacing them with 
remanufactured units.

Bill, the typical failure is Voc of about 10 volts. However, the failure can be 
intermittent. For this reason, any modules in the date period should be 
replaced even though they appear to test OK.

Larry Crutcher
Starlight Solar Power Systems


On Jul 2, 2016, at 3:17 PM, Mac Lewis 
mailto:maclew...@gmail.com>> wrote:

Kyocera had a batch of 120s and 85s that had bad solder connections from a 
certain year. I'm not remembering the year at the moment but we are still 
finding them.
Kyocera has been really amazing about honoring the warranty.

On Jul 2, 2016 2:52 PM, "Jerry Shafer" 
mailto:jerrysgarag...@gmail.com>> wrote:
Wrenches
Bypass diods fail and may short
Jerry
On Jul 2, 2016 1:49 PM, "frenergy" 
mailto:frene...@psln.com>> wrote:
I just came upon a small off-grid system: 12 volt, 4, Kyo 120's (I,mppt= 7.1A; 
Voc = 21.7 or so), Trace C40 with display, etc.   The combiner has fuses for 
each PV/landing.  At noon, output of the array is 10.5 amps.  Clamping the 4 
pvs I get 5.5 amps on 2 PVs and 0.0 on 2 others.  I disconnect leads from 
terminals in PV j-box of the 'dead' PVs and I get Voc=18.5 (pretty hot day) and 
Isc= 6 amps. However when I reconnect these same PVs to the combiner there is 
no change in combined amps.  Fronts and backs of PVs look good, no burns, 
browns, bubbles in backsheet, under the glass looks fine, its all good.  Inside 
the J-boxes look perfect/new.
Ideas?
Thx,
Bill

Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net

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Re: [RE-wrenches] grundfos SQFlex

[Kevin Pegg]

We usually use timer relays so that the pump will only run x minutes out of the 
hr, timed so that the well has sufficient time to recharge between pump runs. 

Wouldn't artificially increasing the pressure by a restriction valve cause the 
pump to use more energy? I have never tried that that was suggested in other 
comments. 

Kevin

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of jay
Sent: June-30-16 5:43 PM
To: RE-wrenches 
Subject: [RE-wrenches] grundfos SQFlex

Hi All,

Any trick methods to keep a SQflex running on AC power at a given flow rate 
that is less than full power?

I’ve got a well that is just on 1 gpm, around 150’ lift.

the sqflex 3-2 will do it, but at 3gpm with full watts, an amazing 265 watts.


thx

jay

peltz power
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