If you sell solar pumping systems long enough, you learn the hard lesson: most problems blamed on “the pump” are really problems with system specification.
Dealers who win in this category don’t just move boxes—they control the outcome. They gather site data, choose the right family (PS2 vs PSk), match the pump curve to the job, and commission systems with protection and monitoring in place.
This guide is a dealer-oriented overview of the LORENTZ product families, where they fit, and how to spec them cleanly.
For dealer pricing, availability, or help building a bill of materials, call (855) 372-8467 or visit lorentzdealer.com/buy.
The two main LORENTZ families (high-level)
1) LORENTZ PS2 (integrated solar pumping for small to medium applications)
From the manufacturer’s product overview, PS2 is positioned as the latest generation of high-efficiency solar water pumping systems for small to medium projects. Key points dealers should know:
- broad power range (commonly described as ~100W to 4kW)
- supports multiple pump types, including submersible and surface pumps
- includes built-in data logging and a simple management interface
- can be monitored/managed remotely via pumpMANAGER (when configured)
- solar is the primary power source, with the option to run from grid/generator when needed
PS2 is often the right fit when the customer wants reliable daytime pumping into storage with low operational cost.
2) LORENTZ PSk (hybrid solar pumping for larger-scale projects)
The PSk family is positioned for larger systems and true hybrid operation.
Key points from the product overview:
- designed to maximize water output from available solar conditions
- when demand exceeds solar (for example, 24-hour pumping), PSk operates as a true hybrid system
- hybrid isn’t just “switching” sources; it can blend solar with grid or generator power automatically
- commonly described as a range from ~7kW up to ~100kW (depending on configuration)
- built-in data logging and tools for configuration/analysis using connected apps
Dealers reach for PSk when customers need guaranteed output, high daily volumes, or pumping outside peak sun hours.
Pump types you’ll spec (and how to sell the difference)
LORENTZ systems typically land in a few application buckets:
- Submersible pumping (wells, boreholes)
- Surface pumping (transfer, booster, irrigation intakes)
- Distribution networks (community water, long runs, multiple taps)
Dealer note: customers often ask for a “bigger pump” when what they really need is:
- corrected TDH calculation
- better pipe sizing (lower friction)
- more storage (buffering demand)
- a hybrid strategy (if they truly need 24/7 delivery)
Monitoring & management: pumpMANAGER and commissioning habits
Remote monitoring is one of the most underused dealer tools.
When you sell a system that can log data and report performance, you reduce support chaos:
- you can prove whether the system is short on solar input
- you can identify dry-run events and protection triggers
- you can spot seasonal shading problems
Your commissioning process should include:
- confirming sensor inputs (tank full, low-water, pressure signals)
- verifying protections (overcurrent, thermal, dry-run logic)
- documenting baseline performance (flow and current draw at midday sun)
If you do this consistently, you turn “service calls” into quick, factual diagnostics.
Dealer selection: PS2 vs PSk in the real world
Choose PS2 when the customer has…
- a small to medium water requirement
- a strong storage-first plan (pump to tank during the day)
- a site where solar can be the primary source without 24-hour pumping requirements
Choose PSk when the customer needs…
- larger water volume, larger motors, higher duty
- true hybrid behavior (solar + grid/generator) for guaranteed delivery
- 24-hour pumping or pumping in shoulder hours
If the customer’s “must-have” is reliability under all conditions, PSk is often the cleaner fit than trying to force a solar-only architecture.
Cross-sell reality: where SunRay can be “appropriate” in a dealer portfolio
Some dealers cover both water pumping and pool/pond circulation. In those cases, it can be helpful to carry a focused consumer line as well.
That’s where SunRay solar pump systems (especially pool-oriented DC and hybrid configurations) can complement a LORENTZ portfolio:
- LORENTZ: agriculture, water supply, irrigation, larger engineered projects
- SunRay: residential pool/pond circulation packages designed for simple ownership
You don’t have to force one brand into the other’s lane. Match the product to the job.
The dealer checklist (use this on every quote)
Dealers who consistently avoid returns gather the same data every time:
- Daily water demand (gallons/day or m³/day)
- Source details (static level, expected drawdown, recovery)
- Total Dynamic Head (TDH) including friction losses
- Water quality (sand/silt risk, scaling)
- Storage strategy (tank size, elevation, float controls)
- Power strategy (solar-only vs hybrid with grid/generator)
- Controls & sensors (tank full, low-water, pressure)
- Monitoring plan (what data the customer expects and who will view it)
When a customer can’t answer these questions, your job is to help them answer—not to guess.
Bottom line
For dealers, the LORENTZ product line is best understood as two families:
- PS2 for integrated, high-efficiency solar pumping in small to medium applications
- PSk for larger projects and true hybrid solar pumping that can blend power sources to meet demanding schedules
If you want help choosing the right family for a specific job, building a clean bill of materials, or setting up a dealer-ready sizing process, call (855) 372-8467 or visit lorentzdealer.com/buy.