Introduction
This manual provides essential information for the safe and effective use of your THERMOS 4035.232.050 Ultralight Thermos Flask. Please read these instructions carefully before first use and retain them for future reference. This 500 ml Ultralight flask is designed for superior temperature retention, keeping beverages hot for up to 10 hours and cold for up to 20 hours, while being exceptionally lightweight and durable.
Figure 1: THERMOS Ultralight Thermos Flask (500 ml, Charcoal Black)
Safety Information
- Hot Liquids: Exercise caution when handling hot liquids. Hot beverages can cause scalding.
- Carbonated Beverages: Do not use the flask for carbonated drinks, as pressure buildup can cause the lid to eject forcefully.
- Dairy Products/Baby Food: Do not store dairy products or baby food for extended periods, as they may spoil.
- Microwave/Oven: Never place the flask in a microwave oven, conventional oven, or on a direct heat source.
- Cleaning: Use only mild detergents and avoid abrasive cleaners or scrubbers that could damage the finish or seals.
- Children: Keep out of reach of children, especially when containing hot liquids.
Product Components
The THERMOS Ultralight Flask consists of several key components designed for optimal performance and ease of use.
Figure 2: Exploded view showing the main components of the flask, including the bottle, lid assembly, and seals.
Figure 3: The lid features a safe flow drinking spout for controlled pouring and drinking.
- Flask Body: Double-walled stainless steel construction for insulation.
- Lid Assembly: Includes the main lid, drinking spout, and various silicone seals for leak-proof performance.
- Safety Lock: A mechanism on the lid to prevent accidental opening.
Setup
- Initial Cleaning: Before first use, wash all parts of the flask (body, lid, and seals) with warm, soapy water. Rinse thoroughly and allow to air dry completely.
- Pre-heating/Pre-cooling (Optional): For maximum temperature retention, pre-heat or pre-cool the flask.
- For Hot Beverages: Fill the flask with hot tap water, secure the lid, and let it stand for 5-10 minutes. Empty the water before filling with your desired hot beverage.
- For Cold Beverages: Fill the flask with cold tap water or ice water, secure the lid, and let it stand for 5-10 minutes. Empty the water before filling with your desired cold beverage.
Operating Instructions
- Filling the Flask:
- Unscrew and remove the lid assembly.
- Pour your desired beverage into the flask, ensuring not to overfill. Leave a small space below the rim to allow for the lid.
- Securing the Lid:
- Carefully align the lid assembly with the flask opening and screw it on clockwise until it is firmly tightened. Do not overtighten.
- Engage the safety lock mechanism on the lid to prevent accidental opening, especially when carrying the flask in a bag.
Figure 4: The safety lock mechanism is visible on the lid when closed, preventing unintentional opening.
- Drinking from the Flask:
- Disengage the safety lock.
- Press the button on the lid to open the drinking spout.
- Drink directly from the spout or pour into a cup.
- After drinking, close the spout by pressing it down until it clicks, then re-engage the safety lock.
Maintenance and Cleaning
Proper cleaning and maintenance will ensure the longevity and hygiene of your THERMOS flask.
Figure 5: Key features including dishwasher-safe property.
- Dishwasher Safe: The THERMOS Ultralight Flask is dishwasher safe for convenient cleaning. Place all components on the top rack of your dishwasher.
- Hand Washing: For best results or if a dishwasher is not available:
- Disassemble the lid completely, removing all seals and the drinking spout mechanism if possible.
- Wash all parts with warm, soapy water using a soft brush or sponge.
- Rinse thoroughly to remove all soap residue.
- Ensure all parts are completely dry before reassembling and storing to prevent mold or odors.
- Deep Cleaning: For stubborn stains or odors, a mixture of baking soda and warm water can be used. Let it soak for a few hours or overnight, then rinse thoroughly.
- Storage: Store the flask with the lid slightly ajar to allow air circulation and prevent odors.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Leakage | Lid not tightened properly; seals are dirty, damaged, or missing; safety lock not engaged. | Ensure lid is securely tightened. Check all silicone seals for proper placement, cleanliness, and damage. Replace damaged seals. Engage the safety lock. |
| Poor Temperature Retention | Flask not pre-heated/pre-cooled; lid not sealed correctly; flask left open for too long. | Pre-heat or pre-cool the flask before use. Ensure the lid is tightly sealed and the drinking spout is closed. Minimize the time the flask is open. |
| Difficulty Opening/Closing Lid | Lid overtightened; food/beverage residue in threads; safety lock engaged. | Do not overtighten the lid. Clean lid threads and flask opening thoroughly. Ensure the safety lock is disengaged before attempting to open. |
| Unpleasant Odor | Improper cleaning; flask stored with lid closed. | Clean all parts thoroughly, especially seals. Use baking soda and water for deep cleaning. Store with lid slightly ajar. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | Ultralight insulated drinking bottle |
| Model Number | 4035232050 |
| Brand | THERMOS |
| Capacity | 500 Milliliters (0.5 Liters) |
| Color | Charcoal Black |
| Material | Stainless Steel (18/8) |
| Item Weight | 202 Grams (7.1 ounces) |
| Product Dimensions | 2.56"W x 8.66"H |
| Hot Retention | Up to 10 hours |
| Cold Retention | Up to 20 hours |
| Special Features | Durable, Lightweight, Reusable, Leak-proof, BPA-Free, Sweat-proof |
| Care Instructions | Dishwasher Safe |
Warranty and Support
THERMOS products are manufactured to high-quality standards and are covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty details, duration, and terms, please refer to the warranty information provided with your purchase or visit the official THERMOS website.
For product support, spare parts, or any inquiries not covered in this manual, please contact THERMOS customer service. You can find contact information on the official THERMOS website or through the retailer where you purchased the product.
Official THERMOS Store: Visit the THERMOS Store on Amazon
