1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your GROHE Contromix-Public 36109 Single-Lever Basin Mixer. This self-closing faucet, designed for single-hole installation, features a mixing function, a water-saving stop function, and durable GROHE StarLight chrome surfaces. It includes a temperature limiter, a 6 l/min flow limiter, and adjustable runtime from 5 to 40 seconds. For optimal performance and longevity, please read these instructions carefully before installation and use.
2. Product Features
- Single-Hole Installation: Designed for easy mounting on a single basin hole.
- Self-Closing Mechanism: Automatically shuts off water flow after a set duration, conserving water.
- Adjustable Runtime: Water flow duration can be steplessly adjusted from 5 to 40 seconds.
- Temperature Limiter: Integrated feature to prevent scalding by limiting hot water temperature.
- Flow Limiter: Maintains a consistent water flow rate of 6 liters per minute for water efficiency.
- GROHE StarLight Chrome Finish: Provides a durable, scratch-resistant, and easy-to-clean surface.
- Flexible Connection Hoses: For convenient and secure water supply connection.
- Dirt Filter: Integrated to protect the mixer from impurities in the water supply.
- Backflow Preventer: Ensures water flows in one direction, preventing contamination.
- Compatibility: Exclusively compatible with the GROHE Rapid SL installation system.
- Easy Installation: Features pneumatic actuation for straightforward hose insertion.
- Optimized Access: Designed with the smallest possible inspection opening while ensuring optimal access to mounting parts.
3. Components Included
The GROHE Contromix-Public 36109000 package typically includes the following items:
- GROHE Contromix-Public 36109000 Single-Lever Basin Mixer (1/2" timed electronic with metallic mixer)
- Actuation Plate
- Fixings/Mounting Hardware
- Flexible Connection Hoses
- Dirt Filters
- Backflow Preventers
- Care Instructions
4. Setup and Installation
Important: Installation must be performed by a qualified professional in accordance with local plumbing and building codes. Ensure the water supply is turned off before beginning installation.
4.1 Pre-Installation Checks
- Verify that your installation system is a GROHE Rapid SL system, as this mixer is exclusively compatible with it.
- Ensure all components listed in Section 3 are present and undamaged.
- Confirm that the minimum flow pressure of 1.2 bar is available.
4.2 Installation Steps
- Prepare the basin: Ensure the single-hole opening is clean and free of debris.
- Mount the mixer: Insert the mixer body into the basin hole. Secure it from underneath using the provided fixings.
- Connect water supply: Attach the flexible connection hoses to the hot and cold water supply lines. Ensure the dirt filters and backflow preventers are correctly installed.
- Pneumatic Actuation: For easy installation, simply insert the pneumatic hose as directed by the GROHE Rapid SL system instructions.
- Install Actuation Plate: Attach the actuation plate according to the specific instructions for your GROHE Rapid SL system, ensuring optimal access to mounting parts through the inspection opening.
- Check for leaks: Slowly turn on the main water supply and inspect all connections for any leaks.

Figure 1: The GROHE Contromix-Public 36109 Basin Mixer installed on a countertop, showcasing its sleek chrome design. This image illustrates the mixer's appearance after successful installation.
5. Operating Instructions
5.1 Activating Water Flow
To activate the water flow, gently press the top surface of the mixer. The self-closing mechanism will initiate water flow for a preset duration.

Figure 2: Top view of the GROHE Contromix-Public 36109 mixer, highlighting the central START/STOP button and the intuitive temperature adjustment ring. The red arrow indicates hotter water, and the blue arrow indicates colder water.
5.2 Adjusting Water Temperature
The mixer features a temperature adjustment ring. Rotate the ring to achieve your desired water temperature. The integrated temperature limiter helps prevent excessively hot water.
5.3 Adjusting Water Flow Duration (Runtime)
The self-closing mechanism's runtime can be steplessly adjusted from 5 to 40 seconds. This adjustment is typically performed during installation or maintenance by a professional, often accessible via the inspection opening. Refer to the detailed installation guide for specific adjustment procedures.
5.4 Water-Saving Stop Function
The mixer is equipped with a water-saving stop function and a 6 l/min flow limiter to ensure efficient water consumption.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your GROHE Contromix-Public mixer.
6.1 Cleaning the Surfaces
- Clean the GROHE StarLight chrome surfaces with a soft cloth and mild soap or a non-abrasive cleaner specifically designed for chrome.
- Avoid using abrasive sponges, scouring agents, or cleaners containing alcohol, acid, or ammonia, as these can damage the finish.
- Rinse thoroughly with clean water and dry with a soft cloth to prevent water spots.
6.2 Cleaning the Dirt Filter
Periodically inspect and clean the integrated dirt filters in the connection hoses to prevent reduced water flow. This procedure should ideally be performed by a qualified plumber.
6.3 Professional Inspection
It is recommended to have the mixer inspected by a qualified plumber every few years to check for wear, adjust settings, and ensure all components are functioning correctly.
7. Troubleshooting
If you encounter issues with your GROHE Contromix-Public mixer, refer to the following common problems and solutions. For complex issues, contact a qualified plumber.
| Problem | Possible Cause | Solution |
|---|---|---|
| No water flow or very low flow. |
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| Water does not shut off automatically. |
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| Inconsistent water temperature. |
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8. Specifications
| Model Number | 36109000 |
| Brand | GROHE |
| Item Weight | 1.12 kg (2.48 Pounds) |
| Product Dimensions | 41 x 31 x 11 cm |
| Finish Type | Polished (Chrome) |
| Number of Pieces | 1 |
| Batteries Required | No |
| Mounting Type | Deck Mount |
| Number of Handles | 1 (Single-Lever) |
| Minimum Flow Pressure | 1.2 bar |
| Flow Limiter | 6 l/min |
| Runtime Adjustment | 5 - 40 seconds (stepless) |
9. Warranty and Support
9.1 Manufacturer's Warranty
The GROHE Contromix-Public 36109000 mixer comes with a 5-year manufacturer's warranty when sold and shipped directly by Amazon. If purchased from a third-party seller, the warranty information provided by that specific seller will apply. For detailed technical information regarding the warranty, please refer to the official GROHE warranty terms.
9.2 Customer Support
For technical assistance, spare parts, or warranty claims, please contact GROHE customer support or your local authorized GROHE service partner. You can typically find contact information on the official GROHE website or in the documentation provided with your product.





