1. Product Overview
The Metabo HWW 4000/25 G is a domestic water pump system designed for automatic water supply, garden irrigation, groundwater pumping, and the transfer, pumping, and circulation of clear water from pressure tanks. It features an energy-efficient and low-noise operation, equipped with a pressure switch on the boiler for automatic activation to meet higher water demands. The system includes a maintenance-free capacitor motor and overload protection to prevent overheating. A high-quality mechanical sealing system ensures a long service life. For user convenience, it has a separate water filling opening for easy pump startup and a tool-free water drain plug to protect against frost damage. This system is suitable for garden irrigation with 1 to 3 sprinklers and operates on single-phase power.

2. Safety Instructions
Always read and understand all safety warnings and instructions before operating this product. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Ensure the power supply matches the voltage specified on the pump's rating plate.
- Do not operate the pump with damaged cables or plugs.
- Protect the pump from frost. Drain water completely if storing in freezing temperatures.
- Do not pump flammable, explosive, or corrosive liquids.
- Keep children and unauthorized persons away from the operating area.
- Always disconnect the power supply before performing any maintenance or cleaning.
3. Setup
3.1 Unpacking
Carefully remove all components from the packaging. Inspect for any damage that may have occurred during transit. Retain packaging for future storage or transport.
3.2 Placement
Place the pump on a firm, level surface in a dry, well-ventilated area, protected from direct sunlight and frost. Ensure sufficient space around the pump for ventilation and maintenance.
3.3 Electrical Connection
Connect the pump to a properly grounded electrical outlet. Ensure the electrical circuit is protected by a residual current device (RCD) with a tripping current of no more than 30 mA.
3.4 Water Connections
Connect the suction line to the pump's inlet and the pressure line to the outlet. Use appropriate fittings and sealants to ensure watertight connections. For optimal performance, the suction line should be as short and straight as possible, and its diameter should not be smaller than the pump's inlet diameter. Install a non-return valve on the suction line to prevent water from flowing back.
3.5 Priming the Pump
Before initial start-up, the pump must be completely filled with water through the separate water filling opening until no more air escapes. This ensures proper suction and prevents dry running. Close the filling opening securely after priming.

4. Operating Instructions
4.1 Initial Start-up
After priming the pump and ensuring all connections are secure, plug the pump into the electrical outlet. The pump will start automatically when water is drawn and the pressure in the system drops below the set activation pressure.
4.2 Automatic Operation
The integrated pressure switch monitors the system pressure. When water is consumed (e.g., opening a tap), the pressure drops, and the pump automatically switches on. Once the water consumption stops and the system pressure reaches the maximum set value, the pump switches off. This automatic function ensures an efficient and convenient water supply.
4.3 Shutting Down
To temporarily shut down the pump, simply close all water outlets. The pump will switch off automatically. For extended periods of non-use or maintenance, disconnect the pump from the power supply.

5. Maintenance
5.1 Regular Checks
Periodically check all connections for leaks. Ensure the suction line is free from blockages and the non-return valve is functioning correctly. Inspect the power cable for any signs of damage.
5.2 Cleaning
Clean the exterior of the pump with a damp cloth. Do not use harsh detergents or solvents. Ensure the motor's cooling fins are free from dust and debris to prevent overheating.
5.3 Winter Storage
If the pump is to be stored in an area where temperatures may drop below freezing, it is crucial to completely drain all water from the pump and connected lines. Use the tool-free water drain plug for this purpose. Store the pump in a dry, frost-free location.
6. Troubleshooting
Before contacting customer support, please refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power supply; Overload protection activated; Motor fault | Check power connection and circuit breaker; Allow motor to cool down; Contact service technician |
| Pump runs but no water is delivered | Pump not primed; Suction line blocked or leaking; Water source empty | Prime the pump; Check suction line for leaks or blockages; Ensure water source has sufficient water |
| Low pressure or flow rate | Partial blockage in suction/pressure line; Air in the system; Worn pump components | Check lines for blockages; Re-prime the pump; Contact service technician for inspection |
| Pump switches on and off frequently | Leak in the system; Pressure tank pre-charge pressure incorrect; Non-return valve faulty | Check entire system for leaks; Adjust pressure tank pre-charge; Inspect/replace non-return valve |
7. Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | Metabo |
| Reference Number | 600971000 |
| Color | Green |
| Style | Domestic |
| Material | Metal |
| Power Source | Electric Cable |
| Voltage | 240 Volts |
| Rated Input Power | 1100 Watt |
| Quantity of Items | 1 |
| Number of Pieces | 1 |
| Maximum Flow Rate | 4000 Liters per hour |
| Maximum Delivery Head | 46 Meters |
| Included Components | METABO 600971000 - Domestic Water Pump HWW 4000/25 G 1100W max. pumping height 46 m |
| Batteries Included | No |
| Batteries Required | No |
| Weight | 17.2 Kilograms |
| Diameter | 1 Picometer |
| Spare Parts Availability | 1 Year |
| Product Dimensions (L x W x H) | 62.6 x 52 x 28.78 cm |
| Item Model Number | 600971000 |
| Country of Origin | China |
8. Warranty and Support
Metabo products are manufactured to high-quality standards and undergo strict quality control. This product comes with a standard manufacturer's warranty, typically covering defects in materials and workmanship for a period specified at the time of purchase. Please retain your proof of purchase for warranty claims.
For technical assistance, spare parts, or warranty service, please contact your authorized Metabo dealer or visit the official Metabo website for local service centers. When contacting support, please have your model number (HWW 4000/25 G) and serial number (if applicable) ready.
- Online Support: Visit www.metabo.com
- Customer Service: Refer to your product packaging or the Metabo website for regional contact information.





