1. Product Positioning and Design

Designed for Wastewater Drainage: Suitable for pumping fiber-free rainwater and greywater (e.g., from washing machines, bathtubs, sinks); not suitable for liquids containing long fibers, or for flammable or corrosive liquids.

Self-Venting Design: Features a built-in air vent valve to automatically release air, ensuring efficient operation.

Flexible Installation: Supports vertical, inclined, or horizontal installation; the discharge outlet must be positioned at the highest point to ensure effective venting.

2. Key Features

(1) Operating Modes

Automatic Operation (Models with float switch):
Starts and stops automatically based on liquid level; the float switch cable length is adjustable (100–200 mm) to control the switching differential.
Lever-arm version suitable for narrow pump pits (minimum dimensions 300 × 350 mm), allowing precise adjustment of start/stop levels.
Manual Operation (Models without float switch):
Requires external switch control; suitable for scenarios requiring manual intervention.

(2) Low-Level Pumping Capability

With inlet strainer: Minimum pumping level of 20 mm.
Without inlet strainer: Can pump down to 3 mm from the bottom; suitable for complete drainage needs (ensure water is free of clogging particles).

(3) Thermal Protection Mechanism

Built-in thermal cutout switch; automatically cuts power during dry running or overload and resumes operation after cooling, protecting the motor.

3. Safety and Protection

IP68 Protection Rating: Fully dustproof and waterproof; capable of continuous submerged operation.

Safety Warnings:
Keep out of reach of children; maintenance must be performed by qualified personnel.
Must be grounded and equipped with a 30 mA Residual Current Device (RCD) for electric shock protection.

4. Typical Applications

Drainage of low-lying areas in buildings (e.g., basements, drainage pits).
Drainage for roof gutters, tunnel sumps, swimming pools, and fountains.
Emergency flood drainage (CC7/CC9 models suitable for outdoor use).