Wastewater lifting station Grundfos Sololift2 C-3, compact macerator pump unit for domestic wastewater

Grundfos Sololift2 C-3 is a compact domestic wastewater lifting station that integrates a macerator and centrifugal pump in a single unit. It is designed to collect and macerate sewage and grey water from sinks, showers, washing machines and toilets where gravity drainage is impractical. The unit is suitable for installation below appliance level or in basements to transfer wastewater to the main drain, providing automatic pumping and backflow protection to maintain hygienic and efficient wastewater removal.

Advantages

The compact design of the Sololift2 C-3 allows installation in confined spaces and under fixtures, reducing the need for major structural modification. The integrated macerator reduces solids to a fine slurry, enabling reliable transport through small-diameter discharge pipes. Automatic level-controlled operation eliminates manual intervention, while a robust pump motor delivers continuous performance for domestic wastewater applications. The unit is designed for straightforward maintenance and service access.

Suitable for

• Sinks and washbasins in basements or below-drain level kitchens
• Showers and bathtubs where gravity drainage is not available
• Washing machines and dishwashers located below the main sewer outlet
• Toilet installations where lifting of sewage to the main drain is required

Key specifications

• Combined macerator and centrifugal pump unit for domestic wastewater
• Compact dimensions for installation under fixtures or in tight spaces
• Automatic level-controlled operation with integrated float switch
• Discharge compatible with small-diameter pressure piping for flexible routing
• Designed for solids maceration to allow pumping of toilet waste and grey water
• Suitable for installation below appliance level or in basement applications

How to use

Install the Sololift2 C-3 according to local plumbing codes and the manufacturer’s installation instructions, ensuring correct positioning under the appliance or fixture requiring drainage. Connect inlet fittings from sinks, showers, toilets or appliances to the unit and run a pressure discharge pipe to the main drain or sewer line. Ensure electrical connection is performed by a qualified electrician and that the unit is grounded and protected by the appropriate circuit. Once installed, the unit operates automatically: wastewater enters the collection chamber, the macerator activates when the liquid reaches a set level, and the pump discharges the macerated effluent through the pressure line.

Usage recommendations

Do not dispose of non-biodegradable items, chemicals or oils into the unit. Regularly inspect inlet connections and the discharge line for blockages or leaks. Schedule periodic maintenance as specified by the manufacturer to check macerator blades, seals and electrical connections to ensure reliable long-term operation.