1. Product Overview
This manual provides instructions for the installation, operation, and maintenance of the GROHE Rainshower 310 Smartactive Cube Head Shower Set. This ceiling-mounted shower set features a 310mm square showerhead with a 142mm shower arm, offering two distinct spray options that can be used individually or combined. The unit incorporates GROHE's Inner WaterGuide insulation to prevent surface overheating and an integrated anti-limescale system with SpeedClean nozzles for easy maintenance.
Figure 1.1: GROHE Rainshower 310 Smartactive Cube Head Shower Set (Chrome Finish)
2. Safety Information
Please read all instructions carefully before installation and use. Retain this manual for future reference.
- Installation should be performed by a qualified professional to ensure proper function and compliance with local plumbing codes.
- Ensure the water supply is turned off before beginning any installation or maintenance work.
- This product is designed for use with instantaneous water heaters (closed water heaters), thermal baths, and storers. It is not suitable for use with open water heaters (low-pressure devices).
- Do not use abrasive cleaners or harsh chemicals on the chrome finish, as this may damage the surface.
- Verify all connections are secure and watertight to prevent leaks.
3. Package Contents
Verify that all components are present and undamaged before proceeding with installation.
- GROHE Rainshower 310 Smartactive Cube Head Shower (310mm)
- Ceiling-Mounted Shower Arm (142mm)
- Mounting Hardware (screws, anchors, seals)
- Instruction Manual
4. Setup and Installation
The GROHE Rainshower 310 Smartactive Cube Head Shower is designed for ceiling installation. Accurate measurements and secure mounting are critical for proper function and safety.
4.1. Pre-Installation Checks
- Ensure the ceiling structure can support the weight of the showerhead and arm, especially when filled with water.
- Confirm that the water supply lines are correctly positioned and accessible for connection.
- Verify compatibility with your water heating system as specified in Section 2.
4.2. Dimensions and Mounting
Refer to the dimension diagram below for precise measurements required for ceiling cutout and installation depth. The shower arm length is 142mm, and the showerhead diameter is 310mm.
Figure 4.1: Installation Dimensions (All measurements in mm)
The installation requires a ceiling opening for the shower arm connection. The total height from the ceiling surface to the bottom of the showerhead ranges from 192mm to 222mm, depending on the adjustable arm extension (142-172mm from the mounting point).
Figure 4.2: Shower Arm and Head Connection Detail
4.3. Installation Steps
- Mark the desired position for the showerhead on the ceiling.
- Create the necessary ceiling cutout according to the dimension diagram (Figure 4.1).
- Install the rough-in box (if applicable, e.g., GROHE Box Ref 264840000) and connect the water supply lines.
- Secure the ceiling-mounted shower arm to the rough-in box or directly to the ceiling structure using the provided mounting hardware. Ensure a watertight seal.
- Attach the Rainshower 310 Smartactive Cube Head Shower to the shower arm. Hand-tighten first, then use a wrench if necessary, being careful not to overtighten.
- Turn on the water supply and check for any leaks.
5. Operating Instructions
The GROHE Rainshower 310 Smartactive Cube Head Shower offers two distinct spray patterns for a personalized shower experience.
Figure 5.1: Showerhead with Spray Options
5.1. Spray Options
- DreamSpray: This setting provides a balanced flow from all nozzles for a luxurious and even spray.
- PureRain / JetRain: This powerful, improved spray option delivers a focused and invigorating water flow.
5.2. Switching Spray Patterns
The showerhead allows you to select between the two spray options or combine them. The method for switching spray patterns is typically integrated into the shower mixer or a diverter valve (sold separately). Consult your shower mixer's manual for specific instructions on how to activate and switch between the DreamSpray and PureRain/JetRain functions.
6. Maintenance
Regular cleaning and maintenance will ensure the longevity and optimal performance of your GROHE Rainshower 310 Smartactive Cube Head Shower.
- Cleaning the Finish: The GROHE StarLight technology ensures a long-lasting chrome finish resistant to dirt and scratches. Clean the surface with a soft cloth and mild soap or a non-abrasive cleaner specifically designed for chrome fixtures. Rinse thoroughly with clean water and dry with a soft cloth to prevent water spots.
- Anti-Limescale System (SpeedClean): The integrated SpeedClean nozzles are designed for easy limescale removal. Simply wipe the silicone nozzles with your finger or a soft cloth to dislodge any mineral deposits. This should be done regularly, especially in hard water areas.
- Inner WaterGuide: The Inner WaterGuide insulation keeps hot water away from the surfaces, preventing them from overheating and extending the product's lifespan. No specific user maintenance is required for this feature.
7. Troubleshooting
If you encounter issues with your showerhead, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Reduced water flow | Limescale buildup in nozzles | Wipe SpeedClean nozzles to remove deposits (see Section 6). |
| Uneven spray pattern | Blocked nozzles | Clean individual nozzles by gently rubbing them. |
| Leaks at connections | Loose connections or damaged seals | Ensure all connections are tightened correctly. Replace seals if damaged. If problem persists, contact a professional plumber. |
| No water or very low pressure | Water supply turned off, main water pressure issue, or blockage in supply line | Check main water supply. Consult a professional plumber if the issue is not resolved. |
If the problem persists after attempting these solutions, please contact GROHE customer support or a qualified plumber.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | GROHE |
| Model Number | 26481000 |
| Style | Ceiling installation (cubic design) |
| Shape | Square |
| Material | Brass |
| Finish Type | Polished Chrome |
| Installation Type | Ceiling Mounted |
| Product Dimensions | 17.01"L x 13.7"W (approx. 43.2cm L x 34.8cm W) |
| Number of Spray Settings | 2 (DreamSpray, PureRain/JetRain) |
| Flow Rate | 2.0 GPM (Gallons Per Minute) |
| Special Features | Inner WaterGuide insulation, Integrated anti-limescale system (SpeedClean) |
| Item Weight | 5.94 pounds (approx. 2.69 kg) |
9. Warranty and Support
GROHE products are manufactured to the highest standards and come with a comprehensive warranty.
9.1. GROHE 5 Year Guarantee
This product is covered by a GROHE 5 Year Guarantee, ensuring quality and reliability. Please retain your proof of purchase for warranty claims.
Figure 9.1: GROHE 5 Year Guarantee
9.2. International Products
Please note that international products may have separate terms, are sold from abroad, and may differ from local products, including fit, age ratings, and language of product, labeling, or instructions. For specific warranty details in your region, refer to the documentation provided with your purchase or visit the official GROHE website.
9.3. Customer Support
For further assistance, technical support, or warranty inquiries, please contact GROHE customer service through their official website or the contact information provided with your product documentation.
