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The Grundfos 5SQ05-140-230V is a 3 inch stainless steel submersible well pump built for 5 GPM performance with a 1/2 HP, 230V single-phase motor and simple 2 wire installation. Its SQ motor design uses permanent-magnet technology with an integrated micro-frequency converter for efficient operation and strong starting performance.
This pump is designed for durability and dependable well service. Floating impellers with tungsten carbide/ceramic bearings help improve wear resistance in sandy conditions, while integrated protection features help guard against overvoltage, undervoltage, overload, overtemperature, and upthrust during startup. The result is a compact well pump that combines efficiency, protection, and straightforward installation in 3 inch wells.
This pump is a 230V, single-phase model with a 2 wire configuration.
Does this pump require a control box?
No. The product data indicates that this model does not require a control box.
What well size is this pump designed for?
It is a 3 inch diameter submersible well pump intended for wells that accommodate a 3 inch pump.
What motor technology does this pump use?
It uses a permanent-magnet motor with an integrated micro-frequency converter as part of the Grundfos SQ design.
What protection features are built into the pump?
The pump includes integrated protection against overvoltage, undervoltage, overload, overtemperature, and upthrust during startup.
Is this pump designed to handle sandy conditions?
The pump features floating impellers and tungsten carbide/ceramic bearings that are described as providing high wear resistance to sand.
Is there anything important to consider during installation or startup?
Yes. The product literature notes that wells with a high static water level may allow the pump to operate outside its recommended range, and a Dole flow restriction valve may be recommended to help prevent upthrust damage.
Install this 3 inch submersible well pump in a well sized for a 3 inch pump. Use the 230V single-phase 2 wire electrical connection and follow local electrical codes. In wells with a high static water level, flow may need to be restricted with a Dole flow restriction valve to help prevent upthrust damage. Installation should be performed by a qualified professional.
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