Product Overview
This manual provides instructions for the installation, operation, and maintenance of your GROHE Square Drain Plug, Model 40565DC0. This drain plug is designed for use with overflow sinks and is compatible with 1/4 inch siphons.
Setup and Installation
Carefully follow these steps for proper installation of the drain plug. Ensure all components are present before beginning.
- Prepare the Sink: Ensure the sink drain opening is clean and free of debris.
- Component Identification: Familiarize yourself with the drain plug components. The GROHE Square Drain Plug is designed for overflow sinks and connects to a 1/4 inch siphon.
- Positioning: Insert the upper part of the drain plug into the sink's drain opening.
- Secure Connection: From underneath the sink, connect the siphon to the threaded lower part of the drain plug. Hand-tighten first, then use appropriate tools to secure, ensuring a watertight seal. Do not overtighten.
- Test for Leaks: Fill the sink with water and check for any leaks around the drain plug and siphon connection. Tighten further if necessary.

Figure 1: Technical drawing illustrating the GROHE Square Drain Plug with key dimensions. The top square plate measures 70mm, the adjustable height from the sink surface to the top of the plug is between 15-24mm, and the siphon connection is G1 1/4.

Figure 2: An isometric view of the GROHE Square Drain Plug, showcasing its square top design and cylindrical body with threaded base for siphon connection.
Operating Instructions
The GROHE Square Drain Plug operates by simple manual placement and removal.
- To Retain Water: Place the square drain plug firmly into the drain opening. Ensure it is seated correctly to create a seal.
- To Drain Water: Lift the square drain plug out of the drain opening.
Maintenance and Care
Regular cleaning will help maintain the appearance and functionality of your drain plug. The drain plug is made of alloy steel with a Super Steel finish.
- Cleaning: Clean the drain plug regularly with a soft cloth and a mild, non-abrasive cleaning agent. Avoid harsh chemicals, abrasive sponges, or scouring pads, as these can damage the finish.
- Stubborn Stains: For more stubborn stains, use a cleaning product specifically designed for stainless steel or alloy steel, following the product's instructions. Rinse thoroughly with clean water after cleaning.
- Inspection: Periodically inspect the drain plug for any signs of wear or damage.
Troubleshooting
If you encounter issues with your GROHE Square Drain Plug, refer to the following common problems and solutions:
- Leakage from Drain:
- Ensure the drain plug is seated correctly and firmly in the drain opening.
- Check the siphon connection underneath the sink for tightness. Tighten if loose, but do not overtighten.
- Inspect the rubber seals (if applicable) for damage or improper placement.
- Difficulty Sealing:
- Clean the drain opening and the underside of the drain plug to remove any debris that might prevent a proper seal.
- Ensure the drain plug is compatible with your sink's drain opening size.
Specifications
| Feature | Detail |
|---|---|
| Brand | GROHE |
| Model Number | 40565DC0 |
| Part Number | 27856400 |
| Compatibility | For overflow sinks, 1/4 inch siphon |
| Material | Alloy Steel (Legierter Stahl) |
| Color/Finish | Super Steel |
| Item Weight | 10.8 ounces |
| Product Dimensions | 3.74 x 2.95 x 2.76 inches |
| GTIN | 04005176491702 |
Warranty Information
Specific warranty details for the GROHE Square Drain Plug are typically provided with the product packaging or can be found on the official GROHE website. Please retain your proof of purchase for warranty claims.
Customer Support
For further assistance, technical support, or to inquire about replacement parts, please contact GROHE customer service. Visit the official GROHE website for contact information specific to your region.
You can find more information and contact details at: www.grohe.com





