Introduction
The Lubi LBI series consists of non-self priming, horizontal, single-stage, centrifugal, end-suction pumps. These pumps are available in both single-phase (2.2 to 3.7 kW) and three-phase (1.5 to 11 kW) power supplies. They feature a compact design with a close-coupled motor and pump for easy installation in limited spaces. The pumps include a maintenance-free mechanical shaft seal and a single-piece pump-motor shaft, with axial suction and radial discharge ports.

Applications
The pumps are suitable for thin, clean, non-explosive, non-aggressive liquids without solid particles or fibers. They are used in water supply systems, irrigation, heating, cooling, air-conditioning, circulation plants, civil, industrial, and fire-fighting applications, as well as pressure boosting in central water systems.

Features and Benefits
Key features include a compact design, easy installation, user-friendly operation, low noise, robust construction, reliable water supply, built-in motor protection, and a back pull-out design for simplified maintenance. The pumps are CE marked.

Operating Conditions
The pumps can handle a maximum sand content of 50 g/m³, with higher sand content reducing pump life. They are designed for non-aggressive, non-explosive atmospheres with relative humidity not exceeding 95%. Performance curves are based on ISO 9906 standards, with tests conducted using clean, cold water at 20°C.

Motor Specifications
The pumps are equipped with Totally Enclosed Fan Cooled, 2-pole induction motors compliant with IS:325. Single-phase motors have built-in thermal overload protection, while three-phase motors require a motor starter. The motors operate at 2900 rpm, with an IP 55 enclosure class and F insulation class.

Construction
The pumps are constructed with materials such as cast iron for the volute, impeller, and flanges, carbon/ceramic/NBR for the mechanical shaft seal, and carbon steel for various components. Optional bronze impellers and stainless steel shafts are available.

Performance Curves and Technical Data
The document provides detailed performance data and dimensional sketches for various models within the LBI series, including flow rates, head ranges, and power requirements. The performance data is based on a motor speed of 2900 rpm and is compliant with ISO 9906 standards.

Contact Information
For sales inquiries, contact Lubi Electricals Limited at [email protected] or [email protected]. The company is located near Kalyan Mills, Naroda Road, Ahmedabad, India.