Grundfos Solar Pump CRFlex 3-9

Design specifications:

• Easy to install and simple to use even under the most difficult conditions.
• Materials of construction are stainless steel for the hydraulic parts and cast iron for the pump head and base.
• The CRFlex pump must be protected against rain and direct sunlight.
• The pump consists of a base and a pump head. The chamber stack and the outer sleeve are secured between the pump head and the base by means of stay bolts. The base has suction and discharge ports on the same level (in-line).
• The pump is equipped with a maintenance-free mechanical shaft seal of the cartridge type.
• The vertical distance between the inlet of the CRFlex pump and the dynamic level of the water source must be less than 20 feet.
• 2-pole motor with integrated variable frequency drive.
• power input of 70 to 1250 W.
• motor speed range of 1000 to 3400 rpm.
• The motor has a wide voltage input range (both AC and DC) – it operates at any voltage from 110 to 415 VDC or 220 to 240 VAC (50/60Hz). It can therefore be connected to either PV solar modules, a standby AC generator or mains power supply as required.
• When run on DC power, it utilises Maximum Power Point Tracking (MPPT) function for optimal performance.
• The CRFlex system is protected against overloading, overheating and dry running.
• IO – 50
• Designed specifically for solar-powered systems.
• The IO 50 enables manual starting and stopping of the pump in an CRFlex Solar system and functions as a connection box joining all necessary cables.

Read more in the Product Brochure

Grundfos teams of skilled service technicians provide different services:

• Installation
• Optimisation & Consultancy
• Repair and maintenance: on-site repair, pump check and workshop repair.

Grundfos has service centres in more than 50 countries throughout the world, supplemented by more than 600 authorised Grundfos Service Partners.

Read more on installation and operating instructions.

The lifetime is typically 10 – 20 years.

End of life information for the MGFlex motor is available online.

Unknown.

Built in protection for under and over voltage and system overload. No additional protection is therefore required.

Care should be taken when handling the motor due to the weight.