1. Introduction
Thank you for choosing the Franke Maris MRG 651 Synthetic Granite Sink. This manual provides essential information for the safe installation, proper operation, and effective maintenance of your new kitchen sink. Please read these instructions carefully before installation and retain them for future reference.

Image 1: Top-down view of the Franke Maris MRG 651 sink, showcasing its black synthetic granite finish, a large main bowl, and a smaller auxiliary bowl with integrated drainers.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the product:
- Installation should be performed by a qualified professional to ensure proper sealing and plumbing connections.
- Wear appropriate personal protective equipment (e.g., gloves, safety glasses) during installation.
- Ensure all plumbing connections are secure and leak-free before regular use.
- Do not place excessively hot items directly into the sink without protection, as extreme temperature changes can cause damage.
- Avoid using abrasive cleaners or harsh chemicals that can damage the sink's surface.
3. Package Contents
Verify that all components are present and undamaged before beginning installation:
- Franke Maris MRG 651 Synthetic Granite Sink unit
- Drain assembly components (strainers, seals, pipes)
- Mounting clips/hardware for countertop installation
- Installation template (may be included or printed from manufacturer's website)
Note: Faucet and plumbing supply lines are typically sold separately.
4. Setup and Installation
The Franke Maris MRG 651 sink is designed for countertop installation. Accurate measurements and proper sealing are crucial for a successful installation. Professional installation is highly recommended.
4.1. Preparation
- Review Dimensions: Carefully examine the provided dimension diagram to ensure the sink fits your cabinet and countertop space.
- Create Cutout: Use the provided template (if available) or the exact dimensions from the diagram to mark and cut the opening in your countertop. Ensure the edges are smooth and clean.
- Clean Area: Ensure the countertop surface around the cutout is clean, dry, and free of debris.

Image 2: Technical diagram illustrating the precise dimensions (in millimeters) for the Franke Maris MRG 651 sink, including overall length (970mm), width (500mm), bowl sizes, and cutout specifications for installation.
4.2. Installation Steps
- Apply Sealant: Apply a continuous bead of silicone sealant around the perimeter of the sink cutout on the underside of the sink flange.
- Position Sink: Carefully lower the sink into the countertop cutout, ensuring it is properly aligned.
- Secure Sink: Attach the mounting clips to the underside of the sink and tighten them against the countertop to secure the sink firmly in place. Do not overtighten.
- Install Drain Assemblies: Install the drain strainers and associated plumbing components into the sink bowls according to the manufacturer's instructions for the drain kit. Ensure all seals are correctly seated to prevent leaks.
- Connect Plumbing: Connect the sink's drain pipes to your household plumbing system. Connect the faucet (if applicable) to the water supply lines.
- Test for Leaks: Turn on the water supply and fill the sink bowls. Check all connections for leaks. Run water through the drains to ensure proper drainage and check for leaks in the drain assembly.
- Wipe Excess Sealant: Remove any excess silicone sealant from around the sink rim immediately after installation.
5. Operating (Usage)
The Franke Maris MRG 651 sink is designed for everyday kitchen tasks. Its synthetic granite material offers durability and resistance to scratches and impacts.
- Use the main bowl for larger washing tasks and the auxiliary bowl for smaller items or food preparation.
- Always use a cutting board for chopping to protect the sink surface.
- Avoid pouring boiling water directly into the sink without running cold water simultaneously, especially if the sink is cold.
6. Maintenance and Cleaning
Regular cleaning will help maintain the appearance and longevity of your Franke Maris sink.
6.1. Daily Cleaning
- Wipe the sink clean with a soft cloth or sponge and mild dish soap after each use.
- Rinse thoroughly with clean water to remove all soap residue.
- Dry the sink with a soft cloth to prevent water spots and mineral buildup, especially in hard water areas.
6.2. Stain Removal
- For stubborn stains, use a non-abrasive liquid cleaner specifically designed for synthetic granite or composite sinks.
- Apply the cleaner, let it sit for a few minutes (as per cleaner instructions), then scrub gently with a soft brush or sponge.
- Rinse thoroughly and dry.
6.3. What to Avoid
- Abrasive Cleaners: Do not use steel wool, abrasive scouring pads, or abrasive cleaning powders, as these can scratch the surface.
- Harsh Chemicals: Avoid strong acids, alkalis, drain cleaners, paint removers, or oven cleaners. If contact occurs, rinse immediately and thoroughly.
- Extreme Heat: While synthetic granite is heat resistant, prolonged exposure to extremely hot pots or pans can cause damage. Always use a trivet or heat protection.
7. Troubleshooting
Here are solutions to common issues you might encounter:
| Problem | Possible Cause | Solution |
|---|---|---|
| Slow Drainage | Clogged drain or P-trap. | Remove and clean the drain strainer. If necessary, clear the P-trap. Avoid chemical drain cleaners if possible. |
| Leaks around drain or pipes | Loose connections or worn seals. | Tighten connections. Inspect and replace worn seals if needed. Ensure proper application of plumber's putty or sealant. |
| Water spots or mineral buildup | Hard water residue. | Wipe the sink dry after each use. For existing buildup, use a diluted vinegar solution (1 part vinegar to 3 parts water), let it sit briefly, then scrub and rinse. |
| Dull surface appearance | Accumulated residue or lack of proper cleaning. | Perform a thorough cleaning as described in Section 6. Consider using a specialized synthetic granite sink enhancer or polish. |
8. Specifications
Key technical specifications for the Franke Maris MRG 651 Sink:
| Feature | Specification |
|---|---|
| Brand | Franke |
| Model Number | MARIS |
| Material | Synthetic Granite |
| Installation Type | Countertop (Arbeitsplatte) |
| Finish Type | Polished |
| Shape | Rectangular |
| Drain Type | Grid |
| Product Dimensions (Overall) | 38.19 x 7.87 x 19.69 inches (approx. 970 x 500 x 200 mm) |
| Item Weight | 36.5 pounds |
| Number of Pieces | 2 (Sink unit and drain components) |
| GTIN (Global Trade Identification Number) | 07612980451517 |
9. Warranty and Support
Franke products are manufactured to high-quality standards. Specific warranty terms and conditions are typically provided with your purchase documentation or can be found on the official Franke website. Please retain your proof of purchase for any warranty claims.
For technical support, spare parts, or warranty inquiries, please contact your retailer or visit the official Franke website for customer service contact information.
Franke Official Website: www.franke.com





