3LCII Stainless Steel Body Plastic Impeller Solar Pump

Model Interpretation:
3: Represents a pump body diameter of approximately 3 inches (approximately 76mm), suitable for small-diameter deep wells.
L: Vertical/Centrifugal.
C: Usually represents "Plastic" or "Light-duty".
II: Represents the second generation (Improved Version) or two-stage structure.

Core Form: Multi-stage centrifugal submersible pump.
Core Difference: Plastic impeller + stainless steel guide casing. This is the biggest difference between it and all-metal pumps (such as 4PSS).
Core Working Principle: Multi-stage centrifugal + plastic impeller pressurization
The 3LCII series' working logic is "a balance of cost-effectiveness and performance":
Core Structure: The motor drives the plastic impeller to rotate, and the water flow is pressurized step by step through the stainless steel guide casing under the action of centrifugal force.
Lightweight Advantage: The plastic impeller is extremely light, with low rotational inertia, so it requires very low starting power from the solar panel. In the weak sunlight of the morning, it is often easier to start than high-power metal pumps.
Corrosion-resistant Design: The plastic impeller is inherently resistant to acid and alkali corrosion and will not rust even in water containing trace amounts of chemicals.
Core Features: Economical, corrosion-resistant, low-voltage start

Feature Detailed Description
High Cost-Effectiveness Core advantage. Due to the use of plastic impellers, manufacturing costs are significantly reduced. It is the most economical option for deep well water extraction, very suitable for small farmers with limited budgets.
Never Rusts The impeller material is usually PPO or nylon reinforced with fiber, which will not rust at all. Even in water containing salt or chemicals, the impeller can remain bright and new.
Low-Voltage Soft Start It has strong adaptability to solar panel voltage fluctuations. Even in low light or low voltage conditions, it can still maintain operation or start smoothly, making full use of every ray of sunlight.
Lightweight and Easy to Install The entire machine is lightweight (usually only a few kilograms), and one person can easily complete the well installation without large lifting equipment.

Typical Application Scenarios
The 3LCII series is ideal for home gardens, small farms, and livestock drinking water:
Shallow/Deep Well Water Extraction:
Suitable for deep wells with a depth between 10 meters and 40 meters (depending on the specific model). Home and Garden Irrigation:
Used for automatic watering and sprinkler systems in villa gardens and balcony vegetable gardens.
Small Fish Pond/Water Tank Replenishment:
Used to pump water from a lower level to a rooftop water tank or fish pond for circulation.
Livestock Farming:
Used for automatic water trough replenishment in small farms.

Selection and Usage Recommendations
Strictly Prohibited for Pumping Sand (Crucial):
This is its biggest weakness. Although the plastic impeller is corrosion-resistant, it has low hardness and is not wear-resistant. If the well water contains sand, the sand particles will quickly wear down the plastic impeller, leading to a sharp decrease in flow rate and pressure, and a shortened lifespan.
Recommendation: Only use for clean water or slightly turbid water; absolutely do not use for pumping sand or mud.
Flow Rate and Head Limitations:
The 3LCII series typically has a smaller power output (e.g., 300W-500W), and therefore limited head and flow rate. It is not suitable for deep wells hundreds of meters deep or large-area agricultural irrigation.
Winter Freeze Protection:
If used in cold regions, residual water in the pump body may freeze and expand after shutdown, causing the plastic impeller or pump body to crack. It is recommended to remove the pump from the water or drain the accumulated water in winter.

The 3LCII series is the "economical and practical" option among solar water pumps. If you only need to pump clean water, are budget-conscious, or only need it for small-scale household use, it is more cost-effective than expensive all-stainless steel pumps (such as the 4PSS). But please remember, it is sensitive to sand and is only suitable for clean water environments.