1. Introduction
Thank you for choosing the KOSTTE Baby Bottle Warmer Model 9300. This device is designed to safely and efficiently warm breast milk, formula, and baby food, ensuring your baby's meals are always at the perfect temperature. Please read this manual thoroughly before use to ensure proper operation and to maintain the product's longevity.

Figure 1: KOSTTE Baby Bottle Warmer Model 9300.
2. Important Safety Information
- Always keep the appliance out of reach of children.
- Do not immerse the main unit in water or other liquids.
- Ensure the power cord is not damaged and is kept away from hot surfaces.
- Unplug the warmer when not in use and before cleaning.
- This product is BPA-free for your baby's safety.
- It is recommended to remove mineral deposits and clean the unit weekly to prevent blockages and ensure optimal performance.
- Do not operate the appliance if it has been damaged in any way. Contact customer support for assistance.
3. Product Features
The KOSTTE Baby Bottle Warmer Model 9300 offers a range of features designed for convenience and safety:
- Rapid Warming: Heats bottles and baby food quickly, typically within 2-5 minutes, depending on volume and starting temperature.
- Wide Compatibility: Spacious design accommodates most brands and sizes of baby bottles and food jars.
- Precise Temperature Control: Utilizes a water bath heating method to ensure even warming without overheating, preserving essential nutrients in breast milk and formula.
- 24-Hour Keep Warm Function: Maintains the desired temperature for up to 24 hours, ideal for nighttime feedings.
- Automatic Shut-off: Calculates optimal heating time and automatically turns off for safety.
- Defrost Function: Gently thaws frozen breast milk and baby food.
- Memory Function: Remembers your last used settings for quick and easy operation.
- BPA-Free: All materials are free from harmful BPA.

Figure 2: Overview of KOSTTE Baby Bottle Warmer key features.
4. Package Contents
Please check the package for the following items:
- KOSTTE Baby Bottle Warmer Main Unit
- Bottle Basket/Lifting Rack
- User Manual
5. Product Overview
Familiarize yourself with the components of your bottle warmer:
- Control Panel: Features an LCD display and touch buttons for mode selection, temperature adjustment, and power.
- Water Tank: The main chamber where water is added for heating.
- Bottle Basket: Used to safely place bottles or food jars into the warmer and remove them.
- Power Cord: For connecting the device to an electrical outlet.

Figure 3: Front view of the bottle warmer showing the digital display and control buttons.
6. Setup
- Unpack: Carefully remove all components from the packaging.
- Clean: Before first use, wipe the main unit with a damp cloth. Wash the bottle basket/lifting rack with warm soapy water, rinse thoroughly, and dry.
- Placement: Place the warmer on a stable, flat, heat-resistant surface, away from direct sunlight and heat sources.
- Connect Power: Plug the power cord into a suitable electrical outlet.

Figure 4: Adding water to the warmer is a simple process.
7. Operating Instructions
General Operation Steps:
- Add Water: Pour approximately 200ml of purified water into the water tank.
- Place Bottle/Bag: Place the bottle or milk bag into the bottle basket and then into the warmer.
- Select Mode: Press the 'M' button to cycle through available modes (Fast Warm, Keep Warm, Defrost).
- Adjust Settings: Use the '+' and '-' buttons to adjust the target temperature or warming time if applicable for the selected mode.
- Start: The warmer will automatically begin the heating process. The display will show the remaining time or current temperature.
- Remove: Once heating is complete, the warmer will automatically shut off. Carefully remove the bottle basket with the warmed item. Always check the temperature of the milk/food before feeding your baby.

Figure 5: Visual guide to the general usage steps.
Specific Modes:
- Fast Warm Mode: Ideal for quickly heating milk or food. The device calculates the optimal time based on volume and material.
- Keep Warm Mode (24 Hours): Maintains a constant, safe temperature for up to 24 hours. Perfect for preparing bottles in advance or for nighttime feedings.
- Defrost Mode: Gently thaws frozen breast milk or baby food, preserving nutrients.

Figure 6: Fast Warm Mode timing guide.

Figure 7: The 24-hour Keep Warm function ensures milk is ready when needed.
Memory Function:
The warmer will remember your last used settings for convenience. Simply place the bottle, add water, and press the power button to start with your previous settings.

Figure 8: The Memory Function simplifies repeated use.
8. Maintenance and Cleaning
Regular cleaning and maintenance will ensure the longevity and hygiene of your bottle warmer.
Daily Cleaning:
- Unplug the warmer and allow it to cool completely.
- Wipe the exterior with a damp cloth. Do not use abrasive cleaners.
- Empty any remaining water from the tank.
- Wash the bottle basket with warm soapy water, rinse, and dry.
Descaling (Weekly Recommended):
Mineral deposits can build up in the water tank, affecting performance. Descale weekly or as needed:
- Mix 50ml of white vinegar with 100ml of cold water.
- Pour the solution into the water tank.
- Allow it to soak for 30 minutes to 1 hour (do not turn on the warmer).
- Pour out the solution and rinse the water tank thoroughly with clean water several times.
- Wipe dry with a soft cloth.
9. Troubleshooting
If you encounter any issues, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Warmer does not turn on. | Not plugged in; power outlet issue; damaged cord. | Ensure it is properly plugged in. Test the outlet with another device. Check the power cord for damage. |
| Milk/food not warming. | Insufficient water; incorrect mode selected; mineral buildup. | Add sufficient water. Select the correct warming mode. Descale the unit as per maintenance instructions. |
| Warming takes too long. | Too much water; mineral buildup; starting temperature too low. | Ensure water level is appropriate. Descale the unit. Allow more time for colder items. |
| Water runs off automatically. | Normal operation after heating cycle. | This is an intended feature for safety and hygiene. No action required. |
10. Specifications
| Specification | Detail |
|---|---|
| Model Number | 9300 |
| Manufacturer | KOSTTE |
| Product Dimensions (L x W x H) | 11 x 11 x 20 cm |
| Product Weight | 950 grams |
| Special Features | Automatic Shut-off, Home Use, Breast Milk Warmer, 24-hour Keep Warm, Rapid Warming |
| Care Instructions | Remove dirt weekly to prevent blockages. |
| Mold Resistant | BPA-Free |
| Batteries Required | No |

Figure 9: Product dimensions for the KOSTTE Baby Bottle Warmer.
11. Warranty and Support
The KOSTTE Baby Bottle Warmer Model 9300 comes with a standard manufacturer's warranty. For detailed warranty information, product support, or any inquiries, please refer to the contact information provided on the product packaging or visit the official KOSTTE website.
We are committed to providing high-quality products and excellent customer service. If you experience any issues, please do not hesitate to contact us.