Tiger LWU-A Stainless Steel Thermal Lunch Box User Manual

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Tiger LWU-A Stainless Steel Thermal Lunch Box User Manual



Thank you for purchasing a “TIGER” Stainless Steel Lunch Box. Please read the instructions completely before use. Keep these instructions for future reference.

Safety Precautions

  • Keep out of reach of children.
  • Colapsing of this product can burn or injure children.
  • Do not carry the lunch box by hoiding the outer ild.
  • The outer tid can detach causing the sunch box to drop and possibie injury.
  • Keep away from stoves, heaters and flames.
  • Heat can bum, bend and disco:or the product.
  • Do not put raw meat / fish or dairy products in the inner containers.
  • Such foods spoil easily.
  • Allow cooked foods to cool off before putting them in the side dish container.
  • Not doing so may cause the food to spoi:.
  • Do not add rice, cooked foods or soup directy to the outer container.
  • Doing so may cause burns or rusting.
  • Do not use the sunch box for any pur- pose other than keeping food warm or coid.
  • Do not store food and soup for more than 6 hours.
  • Protonged storage may cause the food and soup to spoil.
  • Do not set the lunch box on its side.
  • Doing so may cause contents to teak,
  • Do not knock over, drop, or subject the junch box to strong shocks.
  • Doing so may cause burns, deformation, rust, and peeting of the coating, or leaking of contents.
  • Do not swing the :unch box.
  • Doing so may cause injury or damage to peopie and objects.

Microwave Precautions

  • Do not microwave the outer container.
  • Do not microwave the inner containers with their lids on.
  • Do not microwave the inner containers when they are empty.
  • Do not microwave olly or sugary foods in the inner containers for long periods of time.
  • Do not use the grill or oven mode of combination microwave ovens to heat the inner containers. (if other foods were heated using the grill or oven mode, allow the microwave to cool off before heating the inner containers.)

Caution: Improper use can result in injury by electric shock or maifunction, and deformation or damage to the inner containers.

How to Use

Open the outer lid, and remove the inner containers.


Names of Parts


  • Pour hot water into the rice and soup containers, and let them sit for 1 to 2 min.
  • Do not want up the side chest contacher the water and Wipe the containers dry with cloth.
    Warning: Please do not warm the side dish container since its heat resistance is onty 70°C (157°F).
  • Pour hot soup into the soup container.
  • To enhance the thermal effect of the lunch box, pour hot water when not storing soup.
  • Other foods such as stew can be kept warm in the soup container.


Note: The gasket and gasket valve must be set in a proper way before use to avoid leakage. (see figure P.4)

Replacing Gaskets: check the gasket and the gasket valve every 6 months to 1 year for wear / tear condition. If the gasket is too loose or heavily stained then it is time to replace, see back cover for renlacement incuiry.

  • Put hot rice in the rice container.
  • Do not put any other foods such as soups in the rice and grooves container. and tabs.


  • Put the side dish in the side dish container.
  • Allow cooked foods to cool off before putting them into the container.
  • Wrap strong smelling, vinegary, or oily foods and foods with coloring such as spinach and pickled radish in plastic wrap.


  • Set the inner containers in the outer container.
  • Hold the soup and rice containers by their grips, and stack them gently in the outer container.
  • Be sure to stack the inner containers in the order shown to the right.


Note: Not setting the soup container can make removing the rice container difficult later.

  • Attach the outer lid.
  • Attach the chopstick holder to the outer container.


How to Clean

  • Clean after every use.
  • Use synthetic kitchen detergent (for plates and cooking utensils).
  • Use a sponge or soft piece of cloth.

Note: Store the lunch box in a well-ventilated place. Keep it dry and clean when not using.

Attaching and Removing the Gasket (soup container only)

To Remove

Fit the end of a soft pointed rod (tooth- pick, etc.) into the groove and pull out the gasket. (Do not use metal skewers, etc.


To Attach

Press securely into the groove.


Attaching the Gasket Valve (soup container only)

If the gasket valve comes off, reattach it. Gasket valve



  • Do not use harsh / abrasive materials such as thinner, bleach, chemical cleaners, steel wool, and other hard brushes.
  • Do not use dishwashors / dishdryers or boiling water.
  • Always attach the soup container lid’s gasket and gasket valve. →See below.
  • Wash and dry each part thoroughly before storing for long periods without use.

Cleaning Rust-like Spots on the Inside of the Outer Container

  • Dilute 1 tablespoon (approx. 10g) of citric acid in warm water and pour into the outer container.
  • Let it soak for 2 to 3 hours, and then clean with a sponge and rinse abundantly with the water.
  • Wipe the inside of the container with a dry cloth and allow to dry thoroughly, As a substitute:
  • Use 1/2 cup of white vinegar instead of citric acid.



  • Inner flask Stainless steel
  • Outer container Stainless steel (with acrylic coating)
  • Rice container, side dish container, soup container, Polypropylene and soup container lid
  • Rice container lid Polypropylene (inside: Polystyrene foam)
  • Side dish container lid Polyethylene
  • Chopsticks Acrylic
  • Chopstick case ABS
  • Gasket and gasket valve Silicon



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