DHF FLEX Hybrid AC/DC Surface Irrigation Pump

The DHF FLEX is a hybrid, manually primed surface booster pump engineered for high flow requirements. These pumps are often used for general water transfer and irrigation applications.

Technical Specifications

• Pump Type: hybrid Surface, non-self-priming booster pump
• Motor: AC/DC
• Power: 0.75 kW (DHF FLEX 750) and 1.5 kW (DHF FLEX 1500)
• Max Head: 15 m (DHF FLEX 750), 21 m (DHF FLEX 1500)
• Max Flow rate: 17.5 m³/h (DHF FLEX 750), 27.5 m³/h (DHF FLEX 1500)
• Suction Lift: 6 m
• Enclosure Class: Pump-IP54, Controller-IP65
• Controller Current: 18A
• Speed: 3000 rpm
• Clean water or chemical non-aggressive liquids without solids.
• Ambient Temperature: +35°C
• Liquid Temperature: +40°C

Features of DHF FLex Surface Pump

• Hybrid Capability: allows the pump to run on DC solar power or AC mains or a generator.
• MPPT Controller: monitors and protects the pump from overloads.
• Frequency converter: incorporated into the MPPT controller
• Motor: a high-performance AC/DC magnet brushless motor is permanently connected to the pump. The motor can run continuously.
• Power Cable: comes with a 2m waterproof cable.
• Sturdy Construction: has a sturdy frame that houses the pump with controller and enables easier handling.

To ensure the best performance of the pump, size the solar panel capacity with a nominal output 50% greater than the specified motor size. Ensure the input voltage remains between the given limits.

 Pump Construction

• Shaft: AISI304 Stainless Steel
• Pump Body: Cast Iron
• Impeller: Brass
• Frame: Cast Iron

Pump Controller

The pump includes an external smart Maximum Power Point Tracking (MPPT)
An external intelligent MPPT (Maximum Power Point Tracking) controller is provided, offering advanced pump functionality with seamless power source management. Key features include.

Features of the Controller

• Intelligent power source selection: either DC solar, AC mains, or Auto mode, prioritizing DC solar power for optimal energy efficiency
• Automatic switching to AC mains when the DC solar power is insufficient or unavailable, ensuring continuous operation.
• Comprehensive protection including low and high voltage, overcurrent, overtemperature, reverse polarity and dry run.
• User-friendly LED display providing real-time data on voltage, current, power, speed and error codes for easy monitoring and troubleshooting.
• Soft start functionality to enhance the longevity of the motor and pump.

POWER OUTPUTS

Standard test conditions of 1000 W/m² solar irradiance and 25°C are considered when determining the pump output.