THERMOS ThermoCafé Stainless Steel Flask 350ml User Manual

Introduction

This manual provides instructions for the proper use and care of your THERMOS ThermoCafé Stainless Steel Flask, 350 ml. Designed for everyday individual use, this flask is suitable for various activities including commuting, travel, and sports. Its compact design allows for easy portability in backpacks or handbags.

Key Features:

• Double wall vacuum insulation for retaining hot or cold temperatures.
• Durable stainless steel interior and exterior construction.
• Exterior remains cool to the touch with hot liquids and sweat-proof with cold liquids.
• Features an insulated stainless steel serving cup.
• Twist and pour stopper for easy dispensing without full removal.

Setup and Initial Use

1. Unpack: Carefully remove the flask and all components from its packaging.
2. Initial Cleaning: Before first use, wash the flask, stopper, and serving cup thoroughly with warm water and mild dish soap. Rinse all parts completely and allow them to air dry. Refer to the "Maintenance and Care" section for detailed cleaning instructions.
3. Pre-conditioning (Optional): For optimal temperature retention, pre-condition the flask:
   • For hot beverages, fill the flask with hot water for 5-10 minutes, then empty.
   • For cold beverages, fill the flask with cold water or ice for 5-10 minutes, then empty.

Image: The ThermoCafé flask with its main body, twist-and-pour stopper, and serving cup detached, illustrating the separate components for cleaning and use.

Operating Instructions

1. Filling the Flask:
   • Unscrew and remove the serving cup and the twist-and-pour stopper.
   • Pour your desired hot or cold beverage into the flask. Do not overfill; leave approximately 1 inch (2.5 cm) of space from the top to allow for the stopper.
   • Securely re-insert and tighten the twist-and-pour stopper. Ensure it is fully sealed to prevent leaks and maintain temperature.
   • Screw the serving cup back onto the flask.
2. Using the Twist-and-Pour Stopper:
   • To pour, unscrew the serving cup.
   • Twist the stopper a few turns counter-clockwise to open the pour channel. You do not need to remove the stopper completely.
   • Pour the beverage into the serving cup or another container.
   • After pouring, twist the stopper clockwise until it is fully tightened to seal the flask.
3. Using the Serving Cup: The lid of the flask doubles as an insulated serving cup. Simply unscrew it from the top of the flask to use.

Image: A detailed view of the twist-and-pour stopper, showing the 'OPEN' and 'POUR' markings for controlled dispensing.

Maintenance and Care

Proper cleaning and maintenance will ensure the longevity and performance of your ThermoCafé flask.

• Hand Wash Only: This flask is not dishwasher safe. Wash all components by hand with warm water and mild dish soap.
• Thorough Cleaning: For thorough cleaning, disassemble the flask by removing the serving cup and the twist-and-pour stopper. It is recommended to remove the rubber washer from the stopper and wash it separately to ensure all parts are clean and free of residue.
• Rinsing: Rinse all parts completely with clean water to remove any soap residue.
• Drying: Allow all components to air dry completely before reassembling and storing. This prevents odors and bacterial growth.
• Deep Cleaning (Optional): For stubborn stains or odors, a mixture of baking soda and warm water can be used. Fill the flask with this mixture, let it sit for a few hours or overnight, then rinse thoroughly. A bottle brush may be helpful for reaching the bottom.
• Storage: Store the flask with the stopper slightly loosened or removed to allow air circulation, preventing moisture buildup and odors.

Troubleshooting

If you encounter issues with your ThermoCafé flask, refer to the following common problems and solutions:

• Beverage Not Staying Hot/Cold:
  • Check Stopper Seal: Ensure the twist-and-pour stopper is fully tightened and sealed after filling. A loose stopper can lead to temperature loss.
  • Pre-conditioning: Always pre-condition the flask with hot water for hot beverages or cold water/ice for cold beverages for 5-10 minutes before filling. This prepares the inner wall for optimal insulation.
  • Fill Level: For best results, fill the flask to its maximum capacity, leaving only enough space for the stopper. Partially filled flasks may lose temperature faster.
  • Vacuum Seal Integrity: If the exterior of the flask becomes hot when filled with hot liquids (or very cold with cold liquids), the vacuum insulation may be compromised. This typically indicates a manufacturing defect or damage.
• Leaking:
  • Stopper Tightness: Ensure the twist-and-pour stopper is securely tightened and the pour channel is fully closed.
  • Washer Placement: Verify that the rubber washer on the stopper is correctly seated and not damaged. A displaced or damaged washer can cause leaks.
  • Overfilling: Do not overfill the flask. Leave adequate space for the stopper.
• Unpleasant Odors or Tastes:
  • Thorough Cleaning: Ensure the flask and all components, especially the stopper and its washer, are thoroughly cleaned and dried after each use. Food or beverage residues can cause odors.
  • Deep Clean: Use a baking soda and warm water solution for deep cleaning as described in the "Maintenance and Care" section.

Specifications

Image: The complete ThermoCafé flask with the serving cup screwed on, ready for transport or use.

Warranty and Support

THERMOS products are manufactured to high-quality standards. For specific warranty information regarding your ThermoCafé Stainless Steel Flask, please refer to the documentation included with your purchase or visit the official THERMOS website.

If you require technical support, have questions about product functionality, or need assistance with a warranty claim, please contact THERMOS customer service directly. Contact details can typically be found on the product packaging or the official THERMOS brand website.

Manufacturer: Thermos