Rowenta TN3800
Rowenta TN3800F4 Beard Trimmer Instruction Manual
Model: TN3800
1. Important Safety Instructions
Please read all instructions carefully before using the Rowenta TN3800F4 Beard Trimmer. Keep this manual for future reference.
- Water and Moisture: Do not use this appliance near water, such as bathtubs, showers, basins, or other vessels containing water. Avoid contact with eyes, skin, and water.
- Power Supply: Always unplug the appliance when not in use, before cleaning, and during charging. Do not use the appliance while it is charging.
- Children: This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
- Damage: Do not operate the appliance if it has a damaged cord or plug, if it is not working properly, or if it has been dropped or damaged.
- Attachments: Use only attachments specified by the manufacturer.
- Storage: Store the appliance in a dry place.
2. Product Overview
The Rowenta TN3800F4 Beard Trimmer is designed for precise and efficient grooming. It features advanced blade technology and a powerful motor for consistent performance.
2.1. Blades - Cut in One Go
The trimmer is equipped with high-performance blades for a clean and efficient cut.
- Titanium Coating: The blades feature a titanium coating for enhanced durability and long-lasting sharpness.
- High Motor Speed: A powerful motor operates at 6500 rpm for efficient trimming.
- Self-Sharpening Blades: Designed to maintain sharpness over time.

Image: The product packaging illustrating the key features of the blades, including titanium coating, 6500 RPM motor speed, and self-sharpening technology.
2.2. Autonomy - Outstanding Endurance
The trimmer offers excellent battery life and convenient charging features.
- 120 Minutes Autonomy: Enjoy up to 120 minutes of cordless use on a full charge.
- Lithium-Ion Battery: Equipped with a reliable lithium-ion battery.
- 90 Minutes Quick Charge: The battery can be fully charged in approximately 90 minutes.
- LED Battery Monitoring: An LED indicator displays the battery charge status.

Image: The product packaging detailing the battery specifications, including 120 minutes of autonomy, lithium-ion technology, 90-minute quick charge, and an LED battery monitoring system.
2.3. Use - Practical and Smart Features
The TN3800F4 is designed for versatile and user-friendly grooming.
- Washable Blades: The blades are washable for easy cleaning and hygiene.
- 39 Settings: Offers 39 precision length settings for various styles.
- Comb Locking System: Ensures the selected comb setting remains secure during use.
- Corded/Cordless Use: Can be used both with and without the power cord for flexibility.
- Pouch: Includes a storage pouch for convenience.

Image: The product packaging highlighting practical features such as washable blades, 39 length settings, a comb locking system, corded/cordless operation, and the included storage pouch.
3. Setup
3.1. Charging the Trimmer
- Ensure the trimmer is switched off.
- Connect the power cord to the trimmer and plug it into a suitable electrical outlet.
- The LED battery indicator will show the charging status. A full charge takes approximately 90 minutes.
- Once fully charged, unplug the trimmer from the power outlet. Do not use the trimmer while it is charging.
3.2. Attaching and Adjusting Combs
- Select the desired comb attachment. The trimmer comes with 2 adjustable combs, offering settings from 1mm to 20mm.
- Align the comb with the trimmer head and gently push until it clicks into place.
- Use the adjustment dial or slider (if applicable) to select one of the 39 precision length settings, with a minimum cutting height of 0.5mm.
- Ensure the comb is securely locked before use to prevent accidental changes in cutting length.
4. Operating Instructions
Before first use, ensure the trimmer is fully charged.
4.1. General Trimming
- Turn on the trimmer by pressing the power button.
- Hold the trimmer with the comb flat against your skin.
- Move the trimmer slowly against the direction of hair growth for an even cut.
- For best results, ensure your beard is clean and dry before trimming.

Image: A visual representation of the trimmer being used for general beard trimming, showing the comb attachment in action.
4.2. Precision Edging
For precise lines and detailing, remove the comb attachment.
- Carefully remove the comb attachment.
- Hold the trimmer perpendicular to your skin.
- Use the edge of the blade to create sharp lines and contours, even in hard-to-reach areas.

Image: The trimmer being used for precise edging, demonstrating how to achieve sharp lines and contours without the comb attachment.
5. Maintenance and Cleaning
Regular cleaning ensures optimal performance and extends the life of your trimmer.
- Turn Off and Unplug: Always switch off and unplug the trimmer before cleaning.
- Clean Blades: The blades are washable. Detach the blade head (if removable) and rinse it under running water. Ensure no water enters the main body of the trimmer.
- Dry Components: Allow all parts to air dry completely before reassembling or storing.
- Lubrication: Periodically apply a drop of light machine oil (not included) to the blades to maintain smooth operation.
- Clean Body: Wipe the body of the trimmer with a damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the trimmer and its accessories in the provided pouch in a dry place.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not turn on. | Battery is depleted. | Charge the trimmer for 90 minutes. |
| Trimmer runs slowly or pulls hair. | Blades are dirty or not lubricated. | Clean the blades and apply a drop of oil. |
| Comb attachment is loose. | Comb not properly attached or locked. | Ensure the comb is securely clicked into place and the locking system is engaged. |
7. Technical Specifications
| Feature | Detail |
|---|---|
| Model Number | TN3800 |
| Blade Material | Titanium |
| Motor Speed | 6500 rpm |
| Power Source | Battery Powered (Lithium-Ion) / Corded |
| Battery Autonomy | 120 minutes |
| Quick Charge Time | 90 minutes |
| Cutting Length Settings | 39 settings (0.5mm precision) |
| Adjustable Combs | 2 combs (1mm to 20mm) |
| Special Features | Washable blades, Comb locking system, Corded/Cordless use, LED battery indicator, Waterproof |
| Dimensions (Package) | 23.8 x 13.8 x 5.6 cm |
| Weight (Package) | 356 grams |
8. Warranty and Support
For warranty information, product registration, or customer support, please refer to the official Rowenta website or contact their customer service department.
Keep your proof of purchase for any warranty claims.
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