1. Introduction
Thank you for choosing the H.Koenig NV680 Handheld Steam Cleaner. This device is designed for effective and chemical-free cleaning of various surfaces using high-temperature steam. Please read this manual carefully before first use to ensure safe operation and optimal performance. Keep this manual for future reference.
2. Safety Instructions
WARNING: Steam is extremely hot and can cause severe burns. Always exercise caution when operating the steam cleaner.
- Ensure the voltage indicated on the appliance corresponds to your mains voltage.
- Do not immerse the appliance, power cord, or plug in water or other liquids.
- Never open the water tank cap while the appliance is operating or under pressure. Allow it to cool down and release pressure before opening.
- Keep children and pets away from the appliance during operation.
- Do not direct steam at people, animals, or electrical appliances.
- Use only distilled or demineralized water to prevent mineral buildup and extend the life of the appliance.
- Unplug the appliance from the power outlet before filling, emptying, or cleaning, and when not in use.
- Do not use the appliance if the power cord or plug is damaged.
- Always hold the steam cleaner by the handle.
3. Product Overview and Components
The H.Koenig NV680 Handheld Steam Cleaner comes with a variety of accessories for versatile cleaning tasks.

Image: The H.Koenig NV680 steam cleaner shown with its full set of accessories, including various brushes, nozzles, extension tubes, and measuring cup.
Included Accessories:
- Floor brush
- Round brush
- Nylon brush
- Stainless steel brush
- Extension hoses (multiple segments)
- Flexible hose nozzle
- Window squeegee
- Floor wiper
- Measuring cup

Image: Close-up view of the different nozzles and brushes that can be attached to the steam cleaner for various cleaning tasks.
4. Setup
- Filling the Water Tank: Ensure the appliance is unplugged and cool. Unscrew the safety cap on top of the unit counter-clockwise. Use the provided measuring cup to fill the water tank with up to 400 ml of distilled or demineralized water. Do not overfill. Screw the safety cap back on clockwise until it is securely tightened.
- Attaching Accessories: Select the appropriate accessory for your cleaning task. Attach it firmly to the nozzle of the steam cleaner. For extended reach or floor cleaning, connect the extension hoses and then the desired tool (e.g., floor brush).

Image: Detail of the water tank cap, indicating where to fill the water.

Image: The steam cleaner assembled with extension tubes and the floor cleaning attachment.
5. Operating Instructions
- Power On: Plug the steam cleaner into a suitable power outlet (230V). The indicator light will illuminate, signaling that the unit is heating up.
- Heating Time: The appliance will heat up in approximately 3 to 5 minutes. The indicator light may change or turn off once the operating temperature (102 °C) and pressure (3.5 bar) are reached.
- Steam Release: Press and hold the steam trigger on the handle to release steam. For continuous steam, some models may have a lock button for the trigger. Release the trigger to stop the steam flow.
- Cleaning Surfaces: Move the steam nozzle slowly over the surface to be cleaned. For stubborn dirt, hold the nozzle closer for a longer duration. The steam output is approximately 40 g/min.
- Tiles & Grout: Use the small round brush or stainless steel brush for effective cleaning.
- Kitchen & Bathroom: The various nozzles are suitable for countertops, sinks, showers, and fixtures.
- Windows: Attach the window squeegee for streak-free cleaning.
- Fabrics: Use a cloth over a nozzle for refreshing and sanitizing fabrics, ensuring not to saturate delicate materials. Test on an inconspicuous area first.
- Refilling: If steam production stops, the water tank is empty. Unplug the unit, allow it to cool for a few minutes, and carefully unscrew the safety cap to refill.
- Power Off: When finished, release the steam trigger, unplug the appliance, and allow it to cool completely before storing.

Image: The handheld steam cleaner in operation, demonstrating steam output with different nozzle attachments.
6. Maintenance and Cleaning
- Emptying the Water Tank: After each use, ensure the unit is unplugged and cool. Carefully unscrew the safety cap and empty any remaining water from the tank.
- Cleaning Accessories: Wash removable accessories with warm, soapy water. Rinse thoroughly and allow them to air dry before storing.
- Exterior Cleaning: Wipe the exterior of the steam cleaner with a damp cloth. Do not use abrasive cleaners or solvents.
- Descaling: Over time, mineral deposits may accumulate, especially if tap water is used. To descale, mix a solution of white vinegar and water (1:1 ratio) and carefully pour it into the cold water tank. Let it sit for a few hours or overnight. Empty the solution and rinse the tank thoroughly with fresh water several times. Operate the unit with fresh water to flush out any remaining residue. Perform descaling every few months depending on usage and water hardness.
- Storage: Store the steam cleaner and its accessories in a cool, dry place, out of reach of children.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No steam or low steam output | Water tank is empty; Unit not heated sufficiently; Mineral buildup. | Refill water tank; Allow 3-5 minutes for heating; Perform descaling procedure. |
| Water leaking from nozzle | Unit not fully heated; Accessory not properly attached. | Wait for the unit to reach full temperature; Ensure accessory is securely fastened. |
| Power indicator light not on | Unit not plugged in; Power outlet issue. | Check power connection; Test outlet with another appliance. |
| Safety cap difficult to open/close | Unit is still under pressure or hot. | Allow unit to cool completely and release any residual pressure before attempting to open. |
8. Specifications
- Model: NV680
- Power: 1200 W
- Voltage: 230 V
- Steam Pressure: 3.5 bar
- Steam Output: 40 g/min
- Water Tank Capacity: 400 ml
- Heating Time: 3 to 5 minutes
- Steam Temperature: 102 °C
- Cable Length: 3 m
- Product Dimensions: 31.5 x 13 x 23 cm
- Item Weight: 2.3 kg
- Material: Alloy steel
- Special Features: High pressure, Fast heating
- Recommended Surface Use: Tiles, kitchen, bathroom, windows, fabrics
9. Warranty and Support
H.Koenig offers a two-year protection on all its products, reflecting our commitment to quality and customer satisfaction. Should you encounter any issues or have questions regarding your NV680 Handheld Steam Cleaner, please contact our responsive customer service. Our team is ready to assist you with any inquiries.
For further assistance, please refer to the official H.Koenig website or contact your local dealer.