Re: [RE-wrenches] Lorentz Sub Pump

[Kent Osterberg]

Allan, Here the electrical inspector won't let us install the CU-200 or other SQFlex controls because they are not UL listed.  The pump is not listed either, but he doesn't object to that.  So I've installed the SQFlex pumps using a pair of SQ D QO breakers with interlock kit so they can be run on a generator or solar system.  To turn them off, a 2-gallon pressure tank with pressure switch (adjusted to operate at 10 psi) works great if the PV array is near the pumping system.  Kent Osterberg Blue Mountain Solar, Inc. Allan Sindelar wrote: Jeff, What are the brands and specs of the relays you use? I have always avoided relays on array-direct operation, figuring the widely varying array voltage would wreak havoc with dc coil relays. How do you select a relay, given typical arrays that you use? 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 Jeff Oldham wrote: Hi Roy, You do have a choice about controllers, as I mentioned I use off-the-shelf components. For your need you have at least 2 sweet options - 1) get a relay to switch the pump power and use a float switch to control the coil, go with a SSR for even higher reliability. This is a $50 substitute for a $300 CU-200. 2) Use a Cla-val at the tank and a pressure switch and 2gal press. tank at the pump. This works at any distance w/o control wires and is fully hydraulic and highly reliable plus this valve does not throttle as it reaches full. This is my control of choice if the distance between pump and tank is much over 400', cost must be considered as this is about a $700 setup. -jeff o >From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative SOLutions ____________________________________________________________ Penny Stock Jumping 2000% Sign up to the #1 voted penny stock newsletter for free today! http://thirdpartyoffers.juno.com/TGL3131/4bd0afe9e1274a5860st03vuc _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2828 - Release Date: 04/21/10 23:31:00

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