1. Introduction
1.1 Product Overview
This manual provides essential information for the installation, operation, and maintenance of your BLANCO DINAS 45 S kitchen sink. The DINAS 45 S is a reversible stainless steel sink featuring a brush finish and a 3 ½ inch basket valve with rotary drain control. Its design includes a draining board, making it a functional addition to any kitchen.
1.2 Safety Information
- Always ensure the water supply is turned off before beginning any installation or maintenance work.
- Wear appropriate personal protective equipment, such as gloves and eye protection, during installation.
- If you are unsure about any part of the installation process, consult a qualified professional.
- Keep all small parts and tools out of reach of children.
2. Setup and Installation
The BLANCO DINAS 45 S sink is designed for drop-in installation. Ensure your countertop opening matches the sink dimensions for a proper fit.
2.1 Required Tools and Materials
- Jigsaw or appropriate cutting tool for countertop
- Drill
- Screwdriver
- Sealant (silicone recommended)
- Measuring tape and pencil
- Adjustable wrench
2.2 Installation Steps
- Prepare the Countertop: Use the provided template (if included, or refer to the dimension diagram) to mark and cut the opening in your countertop. Ensure the cut-out dimensions are accurate.
- Install Faucet and Accessories: Before placing the sink into the countertop, install the faucet, drain control, and any other accessories onto the sink. This is easier to do when the sink is not yet installed.
- Apply Sealant: Apply a bead of silicone sealant around the perimeter of the countertop opening to create a watertight seal.
- Position the Sink: Carefully lower the sink into the prepared countertop opening. Ensure it is properly aligned.
- Secure the Sink: Use the provided mounting clips (not explicitly listed but standard for drop-in sinks) to secure the sink to the underside of the countertop. Tighten them evenly to ensure a snug fit.
- Connect Plumbing: Connect the drain fitting with the space-saving pipe and the 3 ½ inch basket valve to your household plumbing. Ensure all connections are tight and leak-free.
- Test for Leaks: Turn on the water supply and fill the sink. Check all plumbing connections for any leaks.

Figure 2.1: Dimension diagram for the BLANCO DINAS 45 S kitchen sink, showing overall length of 860mm and width of 500mm, with bowl dimensions and drain hole placement.

Figure 2.2: Cross-section diagram illustrating the drop-in installation method for the sink, showing how the sink rim sits on the countertop.

Figure 2.3: Diagram indicating a minimum cabinet width requirement of 450mm for proper installation of the sink.
3. Operation
3.1 Drain Control
The BLANCO DINAS 45 S sink is equipped with a 3 ½ inch basket valve featuring rotary actuation for drain control. To open or close the drain, simply rotate the control knob located on the sink deck. This allows for convenient filling and draining of the sink without needing to reach into the water.
3.2 Reversible Design
This sink features a reversible design, meaning it can be installed with the main bowl on either the left or right side, depending on your kitchen layout and preference. This flexibility should be considered during the initial installation phase.

Figure 3.1: The BLANCO DINAS 45 S sink shown installed in a kitchen setting, highlighting the integrated draining board and faucet area.
4. Maintenance and Care
Proper care will ensure the longevity and appearance of your stainless steel sink.
4.1 Daily Cleaning
- After each use, wipe the sink with a dry cloth to prevent water spots and mineral buildup.
- For general cleaning, use a mild dish soap and a soft sponge or cloth. Rinse thoroughly with clean water.
- Avoid abrasive cleaners, steel wool, or harsh chemicals, as these can scratch the stainless steel finish.
4.2 Preventing Scratches and Stains
- While stainless steel is durable, it can scratch. Use cutting boards and avoid dragging heavy or sharp objects across the sink surface.
- To maintain the luster, occasionally use a specialized stainless steel cleaner and polish, following the product instructions.
- Promptly rinse away acidic foods (e.g., citrus, tomatoes) and strong chemicals (e.g., bleach) to prevent potential staining or corrosion.
4.3 Drain Maintenance
- Regularly clean the basket valve to remove food debris and prevent clogs.
- Avoid pouring grease or oil down the drain, as this can lead to blockages.
5. Troubleshooting
This section addresses common issues you might encounter with your kitchen sink.
5.1 Water Leaks
- Issue: Water leaking from under the sink or around the drain.
- Solution: Check all plumbing connections for tightness. Ensure the drain fitting and basket valve are properly sealed and tightened. Inspect the sealant around the sink rim for any gaps or deterioration. Reapply sealant if necessary.
5.2 Slow Drainage or Clogs
- Issue: Water drains slowly or not at all.
- Solution: Remove the basket valve and clear any visible debris. Use a plunger to attempt to clear the clog. If the clog persists, a drain snake may be required, or professional plumbing assistance might be needed.
5.3 Water Spots or Stains
- Issue: Unsightly water spots or minor stains on the stainless steel surface.
- Solution: These are often caused by mineral deposits from hard water. Clean with a mixture of vinegar and water, then rinse and dry thoroughly. For stubborn stains, a specialized stainless steel cleaner can be used.
6. Specifications
| Brand | BLANCO |
| Model Number | 523378 |
| Material | Stainless Steel |
| Color | Stainlesssteel |
| Product Dimensions (D x W x H) | 20.08"D x 33.86"W x 7.68"H (51cm D x 86cm W x 19.5cm H) |
| Item Weight | 15.75 pounds (7.16 kg) |
| Style | With draining board |
| Installation Type | Drop In |
| Finish Type | Stainless steel brush finish |
| Drain Type | Pop-Up (3 ½ inch basket valve with rotary actuation) |
| Included Components | Drain fitting with space-saving pipe, 3 ½ inch basket valve with drain control (rotary actuation), seal |
7. Warranty and Support
7.1 Product Warranty
For detailed information regarding the warranty coverage for your BLANCO DINAS 45 S kitchen sink, please refer to the warranty card included with your purchase or visit the official BLANCO website. Warranty terms and conditions may vary by region and purchase date.
7.2 Customer Support
If you require technical assistance, have questions about installation, or need to report a product issue, please contact BLANCO customer support. Contact information can typically be found on the BLANCO official website or in your product documentation.
You can visit the official BLANCO store on Amazon for more information: BLANCO Store





