I. Core Functional Positioning
The Wilo Drain LP 40 is a professional-grade self-priming sewage pump designed for the large-scale transfer of clean water or lightly contaminated wastewater. Its applications span horticulture, agricultural production, and industrial process technology. Thanks to the corrosion-resistant properties of its polypropylene and bronze components, the pump is also suitable for seawater transfer, extending its utility to specialized sectors such as aquariums and aquaculture.
II. Technical Performance Features
Excellent Self-Priming Capability
Supports a maximum suction lift of 6 meters and features standard 40mm (1½-inch) suction and discharge ports, ensuring rapid negative pressure generation for startup.
Priming time increases scientifically with depth (measured data: approx. 1 minute for 1m depth, approx. 10 minutes for 6m depth), meeting the requirements of various operating conditions.
High-Efficiency Power System
Operates on a single-phase 230V ±10% AC power supply with a rated power of 500W (motor output: 400W). Equipped with a 9μF/450V capacitor, it achieves a high operating speed of 2900 rpm, balancing energy consumption with efficiency.
Corrosion-Resistant Structural Design
The pump housing is made of glass-fiber reinforced polypropylene, the impeller of bronze alloy, and the shaft of stainless steel, providing comprehensive resistance to corrosion from seawater and chemical media.
Intelligent Protection Configuration
Features an IP44 protection rating and Class B insulation, making it suitable for humid environments.
Supports continuous operation mode (S1) and includes a built-in thermal protection mechanism to prevent motor damage due to overheating.
III. Safety and Reliability
Dry-Running Protection Mechanism
Strict requirement: The pump chamber must be filled via the fill port before the initial startup to prevent mechanical seal wear caused by dry friction.
Rigorous Operating Protocols
Installation and commissioning must be performed by qualified professionals. During transport, only the designated lifting eyelet may be used (pulling on the power cable is strictly prohibited) to ensure equipment integrity.
Comprehensive Fault Protection
Equipped with features such as automatic rotor blockage detection, cable breakage protection, and low-liquid-level alarms; includes a fault diagnosis guide (covering suction pipe leak detection and pipeline blockage clearing procedures).
IV. Application Suitability
Mobile dry installation: Suitable for scenarios such as temporary drainage and emergency pumping.
Stationary dry installation: Can be integrated into long-term operation systems, such as aquaculture recirculation systems and industrial water treatment units.
V. Maintenance and After-sales Service
Bearings and mechanical seals feature a maintenance-free design; however, professional inspection by a Wilo-authorized service center every six months is recommended. Technical support centers are located in over 40 countries worldwide, providing localized technical support.
Structure
Self-priming sewage pump with a standard motor, suitable for dry sump installation.
Applications
Sewage
Industrial water
Seawater
Model Code
|
for example: |
Wilo-Drain LP 40/10 |
|
LP |
Self-priming pump |
|
40 |
Nominal diameter (1½") |
|
10 |
Maximum head, in meters |
Technical Data
Power connection: 1~230 V, 50 Hz
Protection class: IP44
Fluid temperature: 3 ... 35 °C
Suction and discharge ports: Rp 1½
Maximum suction lift: 6 m
Materials
Pump housing: PP
Impeller: Brass
Shaft: 1.4006
Mechanical seal: C/Cr
Static seals: NBR
Motor housing: Al
Type
Self-priming centrifugal pump with a modular design; suitable for portable and stationary dry sump installation (non-submersible).
The hydraulic unit features a horizontal suction port and a vertical discharge port. It utilizes a vortex impeller and is driven by a standard motor. The hydraulic unit and motor share a common shaft. A low-vibration base ensures stable installation.
Scope of Delivery
Pump
2x Counter-flanges with G 1½ internal thread
Installation and operating instructions
Accessories
Connection cable kit:
5 m connection cable
Motor protection plug
R 1½ hose connection kit
ZSE level switch
