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Grundfos Sololift2 - User Manual

Grundfos Sololift2
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Sololift2
50 Hz
1~
Service instructions
GRUNDFOS INSTRUCTIONS
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Summary

Tightening Torques and Lubricants

Service Tools

General Information

Cleaning the Sololift2

Instructions for internal cleaning of the Sololift2 when rarely used.

Cleaning Connected Units

Procedure for cleaning connected units after Sololift2 cleaning.

Periods of Inactivity

Recommendations for flushing and draining the unit during long periods of inactivity.

WC-1, WC-3, CWC-3 Service Procedures

Removing and Fitting the Cover

Steps for safely removing and fitting the cover on the unit.

Replacing the Capacitor

Detailed instructions for replacing the capacitor component.

Replacing the Control Board

Steps for safely removing and installing a new control board.

Replacing the Supply Cable

Guidance on how to replace the power supply cable.

Replacing the Pressure Switch

Instructions for removing and fitting the pressure switch.

Replacing the Motor

Comprehensive guide for replacing the motor unit.

Replacing Grinder Head;Impeller

Procedure for replacing the grinder head and impeller assembly.

Replacing the Grinder Ring

Steps for removing and installing the grinder ring component.

DIP Switch Settings

Explanation of DIP switch settings for motor stop delay.

C-3, D-2 Service Procedures

Removing and Fitting the Cover

Steps for safely removing and fitting the cover on the unit.

Replacing the Supply Cable

Guidance on how to replace the power supply cable.

Replacing the Capacitor

Detailed instructions for replacing the capacitor component.

Replacing the Pressure Switch

Steps for removing and fitting the pressure switch.

Replacing the Motor

Comprehensive guide for replacing the motor unit.

Replacing the Impeller

Procedure for removing and installing the impeller component.

Fault Finding and Troubleshooting

Wiring Diagrams

Exploded Views

WC-1 Exploded View

Diagram showing the assembly of the WC-1 model.

WC-3 Exploded View

Diagram showing the assembly of the WC-3 model.

CWC-3 Exploded View

Diagram showing the assembly of the CWC-3 model.

C-3 Exploded View

Diagram showing the assembly of the C-3 model.

D-2 Exploded View

Diagram showing the assembly of the D-2 model.

Overview

The Sololift2 is a compact and versatile lifting station designed for handling wastewater from various sanitary appliances. It is primarily used in situations where wastewater cannot be discharged directly into the main sewer system by gravity. The device is available in several models, including WC-1, WC-3, CWC-3, C-3, and D-2, each tailored for different applications and wastewater types.

Function Description

The core function of the Sololift2 is to collect and pump wastewater from toilets, washbasins, showers, and other fixtures to a higher-level drain or sewer. It integrates a powerful motor, a grinder head (in WC models), an impeller, and a pressure switch within a compact tank. When wastewater enters the tank, the pressure switch detects the rising water level and activates the motor. In WC models, the grinder head macerates solid waste, such as toilet paper and human waste, into a fine slurry before it is pumped away by the impeller. For C-3 and D-2 models, which handle greywater, the impeller directly pumps the liquid. The pump continues to operate until the water level drops below a predefined threshold, at which point the pressure switch deactivates the motor. A non-return flap prevents backflow of wastewater into the connected appliances. The device is designed for intermittent operation, activating only when wastewater needs to be discharged.

Usage Features

The Sololift2 offers several features that enhance its usability and adaptability in various installations. Its compact design allows for discreet installation, often behind a wall, under a washbasin, or directly next to a toilet. The different models cater to specific needs:

  • WC-1, WC-3, CWC-3: These models are equipped with a grinder system, making them suitable for handling wastewater from toilets containing faeces and toilet paper. The WC-3 and CWC-3 models also have additional inlet connections for other sanitary appliances like showers and washbasins.
  • C-3, D-2: These models are designed for greywater applications, such as from showers, washbasins, bidets, and washing machines, and do not feature a grinder. The C-3 model offers a higher start level option for specific installation requirements.

The device is designed for easy connection to various inlet and outlet pipes. The discharge port is typically adjustable to accommodate different pipe orientations. For models with multiple inlets, flexible connections allow for easy integration with various sanitary fixtures. The control board manages the pump's operation based on the pressure switch readings, ensuring automatic and reliable wastewater removal. Some models also include DIP switches for adjusting the stop delay, offering flexibility in operation.

Maintenance Features

Maintenance of the Sololift2 is designed to be straightforward, with several features facilitating easy servicing and part replacement. The cover can be easily removed by unscrewing a single screw, providing access to internal components. Key components like the capacitor, control board, supply cable, pressure switch, motor, grinder head/impeller, and grinder ring are designed for individual replacement.

For routine cleaning, the Sololift2 can be kept clean through regular flushing of connected toilets. For less frequent use or internal cleaning, a procedure involving disconnecting power, adding detergent to the connected unit, flushing, allowing the detergent to work, and then flushing with clean water is recommended. This helps maintain hygiene and optimal performance.

When replacing parts, the manual provides detailed instructions, including the use of specific service tools such as screwdrivers, polygrip pliers, ratchet spanners, and hexagon keys. It emphasizes the importance of switching off the power supply, closing isolating valves, and disconnecting the supply cable before any dismantling. During assembly, it is crucial to clean and check all parts, replace defective ones, and always use new gaskets and O-rings to ensure a watertight seal. Lubrication and correct tightening torques for screws and nuts are also highlighted to ensure proper reassembly and long-term reliability. The manual also includes wiring diagrams and exploded views for each model, which are invaluable resources for identifying parts and understanding the internal layout during servicing. Safety warnings regarding electrical parts and sharp edges are provided to ensure user safety during maintenance.

Grundfos Sololift2 Specifications

General IconGeneral
Protection ClassIP44
Protection RatingIP44
Power Supply230 V, 50 Hz
ApprovalsCE
Outlet DiameterDN22/25/32
Housing MaterialPlastic
Impeller MaterialPlastic

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