PS1800 C-SJ3-9 Solar Pump System

  • Lift up to 30 – 50 m
  • Maximum flow rate up to 5.5 m³/hour “Centrifugal “
  • Cost efficient pumping
  • Maintenance free
  • High reliability and life expectancy

PS1800 FamilyLORENTZ was established in Hamburg, Germany and has been a quality designer and manufacture of Solar Pumps since 1993. Through the innovative electronic controlling, outstanding manufacturing quality and a simple design, Lorentz have managed to reduce the high cost of solar water pumping. Their submersible helical rotor pumps consist of only two parts, Lorentz’s brushless motors are water filled and maintenance free, while the electronics are NOT inside the submerged motor but easily accessible on the surface.


  • Drinking water supply
  • Livestock watering
  • Pond management
  • Irrigation
  • Windmill replacement
  • Dams, creeks, rivers and tanks


  • 2 years manufacturer’s warranty against defects in material and workmanship


Controller PS1800

  • controlling of the pump system and monitoring of the operating states
  • Mounted at surface (no electronic parts submerged)
  • Two control inputs for well probe (dry running protection), float or pressure switches, remote control etc.
  • Automatic reset 20 minutes after well probe turns pump off
  • Protected against reverse polarity, overload and high temperature
  • Speed control, max. pump speed adjustable to reduce flow rate to c. 30%
  • Solar operation: integrated MPPT (Maximum Power Point Tracking)
  • Battery operation: low voltage disconnect and restart after battery has recovered
  • Max. efficiency 92% (motor + controller)
  • Enclosure: IP 54 (sealed, weatherproof)

Motor ECDRIVE 1200C

  • Brushless DC motor
  • No electronics inside motor
  • Water filled
  • IP68, pressure balanced, unlimited submersion
  • Dynamic slide bearings, material: carbon/ ceramic
  • Wetted material: stainless steel (AISI316), POM, rubber, cable drinking water approved

Pump End – PE

  • High life expectancy
  • None-return valve
  • Dry running protection
  • Material: stainless steel (AISI 316), rubber

Technical Specifications

PS1800 SJ3-9
Lift 30 – 50 m
Maximum flow rate 5.5 m³/hour
Solar operation Nominal voltage 72 – 96V DC, Open circuit voltage max 200V DC
Solar Generator – Wp Maximum 2500 W
Battery operation Nominal voltage 72-96V DC
Weight 11.2 kg

Quality and Safety

  • Stainless steel material – AISI 316
  • Enclosure IP 54 – sealed, weatherproof