Kent,
We're dealing with one right now. Installed late 2005, the last Lorentz we installed because it was at the tail end of all the Lorentz troubles. So 4 1/2 years in residential use.

We were to pull the pump this morning, but postponed one day because of heavy overcast. Troubleshooting suggests that the array checks out and the pump checks out in terms of resistance between phases and to ground. Low water sensor doesn't check out. We replaced the controller (good support from Solar Power and Pump in Elk City OK) but didn't resolve the issue - it's now beyond what the troubleshooting chapter covers.

If I learn anything interesting I'll post it here.
Allan


Allan Sindelar
Allan@positiveenergysolar.com
NABCEP Certified Photovoltaic Installer
EE98J Journeyman Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com



Kent Osterberg wrote:
Fellow wrenches,

Problems with Lorentz pumps have been discussed here before.  Yesterday, I responded to a no water complaint and found that the Lorentz pump we installed in 2007 appears to have seized up during six months of non-use (it's for stock water).  This is the second identical failure for the same customer.  The pump is in a deep well that it is unlikely to over pump and there is a low-water sensor too.  For those of you that have installed these pumps, what types of problems have you observed?  How long are these pumps lasting?  Thanks any replies.

Kent Osterberg
Blue Mountain Solar, Inc.

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