Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

Some two-wire pumps have integral start capacitors and others, Franklin and Gould comes to mind, do not. I’d be looking at start up current duration. If by chance the pump motor is without a capacitor and the current remains high for more than a second or two, it’s most likely structural as

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

Allan - my understanding is that with a 2-wire pump, the start capacitor is integrated into the pump housing, underwater. I've never dealt with a 2-wire pump eithermy experience has been with start capacitors in 3-wire pumps being located conveniently above ground in the pump control

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

Have you checked the condition of the batteries. Unless the L-16s are Rolls or  East Penn, it might be about time for some cells to be going bad. - Original Message - From: "RE-wrenches" To: "RE-wrenches" Cc:

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

Dan, I have never had to work with a two-wire pump, so I'm on shaky ground here, but I refer back to what I learned years ago from Windy. The third wire in a three-wire pump carries the starting surge from the capacitor. A two-wire pump lacks this, and thus gets its entire surge-under-load

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

Dan, Have you measured start up current? > On Dec 10, 2016, at 9:39 AM, Drake > wrote: > > The usual wire I see running to most pumps is #10 UF cable. A 450 foot run > might create too much voltage drop. Maybe a buck boost transformer would > help. > >

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

The usual wire I see running to most pumps is #10 UF cable. A 450 foot run might create too much voltage drop. Maybe a buck boost transformer would help. Drake At 12:11 PM 12/10/2016, you wrote: Hi Bob; I checked the connections for corrosion, and the wire size looks like "the usual" for up

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

Michael; Battery bank voltage at 75% SOC is around 24.7v, so it's in the ballpark and the battery bank has only about 3 years on it (8 x L-16) and not much abuse. Dan Fink Adjunct Professor of Solar Energy Technology, Ecotech Institute IREC Certified Instructor™ for: ~ PV Installation

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

What is the battery voltage when the client says that SOC is %75? VFD driven pumps are three phase. There are single phase “soft start” controllers for pumps and motors designed for that application, but not for a two wire fed submersible pump. The pump, for mechanical reasons, not just

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

Hi Bob; I checked the connections for corrosion, and the wire size looks like "the usual" for up here in this area, it's only about 100 feet and the usual well depth around here is 350 ft. Running stouter wire might be an option to consider...but that's a lot of digging. I'm just hoping VSD might

Re: [RE-wrenches] Retrofit variable speed drive to old well pump?

Don't know about the variable speed but are the wires feeding the pump large enough for the distance? Sounds like it might be voltage starved because of a high resistance / bad connection or a long wire run and the need for a larger wire ? Just a thought, Bob Ellison > On Dec 10, 2016, at

[RE-wrenches] Retrofit variable speed drive to old well pump?

Esteemed Wrenches; I have a client in a very remote mountain location who is having trouble with his inverter starting his well pump when battery state of charge is below 75%. 24v system, Magnum inverter. It's a 2-wire pump, unknown age, model, horsepower, or well depth. It has always given him