Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your DUPASU Electric Lunch Box Food Warmer. Please read it thoroughly before first use and retain it for future reference.
Important Safety Instructions
- Always open the exhaust cover before heating to allow steam to escape.
- Do not immerse the main heating base unit in water or any other liquid.
- Ensure the power cords are securely connected before plugging into an outlet.
- Keep out of reach of children.
- Do not use if the power cord or plug is damaged.
- The 0.45L plastic salad box is not designed for heating and may melt if heated.
- Unplug the device when not in use and before cleaning.
- Use only the provided power cords.
Product Overview and Components
Your DUPASU Electric Lunch Box Food Warmer comes with the following components:
- Main Heating Box Unit
- 1.8L Detachable Stainless Steel Container
- 0.45L Plastic Salad Box (not for heating)
- Stainless Steel Fork and Spoon
- Insulated Carrying Bag
- 110-230V AC Power Cable (for home/office use)
- 12/24V DC Car/Truck Power Cable (for vehicle use)
- User Manual
Figure 1: DUPASU Electric Lunch Box with its insulated bag, stainless steel container, plastic salad box, utensils, and power cables.
Figure 2: Key features including the handle, exhaust cover, utensil storage, sealing ring, and dual power inputs.
Setup
- Unpack all components from the packaging.
- Wash the stainless steel container, plastic salad box, fork, and spoon with warm soapy water before first use. Rinse thoroughly and dry.
- Ensure the main heating box unit is clean and dry before connecting any power cables.
Operating Instructions
Preparing Your Meal
Place your food into the 1.8L stainless steel container. If using the 0.45L plastic salad box for non-heating items, place it inside the stainless steel container or separately.
Heating Your Meal
- Place the stainless steel container with food into the main heating box unit.
- Close the lid securely using the side clips.
- Important: Open the exhaust cover on the lid before heating to allow steam to escape and prevent pressure buildup.
- Connect the appropriate power cable (110-230V for home/office or 12/24V for car/truck) to the corresponding input port on the side of the lunch box.
- Plug the other end of the cable into a compatible power outlet (wall outlet or vehicle power socket). The power indicator light will illuminate, indicating heating has begun.
- Allow 20-30 minutes for your meal to heat thoroughly. Heating time may vary based on food type, quantity, and initial temperature (e.g., frozen food will take longer).
- Once heated, unplug the lunch box. Close the exhaust cover if transporting.
- Carefully open the lid and enjoy your warm meal.
Figure 3: Simple 3-step heating process: Plug in, open exhaust cover, and heat.
Figure 4: Versatile power options for both vehicles (12V/24V) and standard outlets (110V/230V).
Cleaning and Maintenance
Proper cleaning ensures hygiene and extends the life of your lunch box.
- Always unplug the lunch box and allow it to cool completely before cleaning.
- The detachable stainless steel container, plastic salad box, fork, and spoon are dishwasher-safe. They can also be washed by hand with warm soapy water.
- Caution: Do not immerse the main heating base unit in water. To clean the exterior of the heating base, wipe it with a damp cloth and mild soapy water. Ensure no water enters the electrical ports.
- Dry all components thoroughly before reassembling or storing.
Figure 5: The stainless steel container is easily removable for cleaning. Remember not to immerse the main unit.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lunch box not heating. | Not plugged in correctly; power outlet issue; damaged cable. | Ensure cables are fully inserted. Try a different outlet. Check cables for visible damage. |
| Food not heating evenly or taking too long. | Exhaust cover closed; too much food; food is frozen; low ambient temperature. | Open the exhaust cover. Reduce food quantity. Allow frozen food to thaw partially. Increase heating time in colder environments. |
| Steam escaping from lid. | Normal operation (exhaust cover open). | This is normal. Ensure exhaust cover is open during heating. |
| Plastic salad box melting. | Used for heating. | The plastic salad box is not for heating. Only use the stainless steel container for heating. |
Specifications
- Brand: DUPASU
- Model: ML-1801
- Material: Food-grade PP Plastic, Stainless Steel
- Capacity: 1.8 Liters (Stainless Steel Container), 0.45 Liters (Plastic Salad Box)
- Power: 100W
- Input Voltage: 110-230V AC (Home/Office), 12V/24V DC (Car/Truck)
- Dimensions: Approximately 9.72 x 7.13 x 5.04 inches
- Item Weight: Approximately 2.57 pounds
- Special Features: Airtight, Dishwasher Safe (container), Easy to Clean, Heat Resistant, Leak Resistant
Figure 6: DUPASU's 100W heating and 1.8L capacity compared to typical 60W, 1.5L models.
Warranty and Support
DUPASU offers a lifetime warranty for this product. To activate your warranty and for further support, please refer to the warranty card included in your package or visit the official DUPASU website.
For any questions or assistance, please contact DUPASU customer service.
Figure 7: DUPASU Brand Logo.