1. Introduction
The Bonsenkitchen VS3803 Vacuum Sealer Machine is designed to help preserve food freshness by removing air from specially designed bags and containers. This process extends the shelf life of various food items, reduces food waste, and is ideal for meal preparation, sous vide cooking, and general food storage. Its compact design and automatic operation make it a convenient addition to any kitchen.
2. Safety Information
- Read all instructions before using the appliance.
- Do not immerse the appliance, power cord, or plug in water or other liquids.
- Keep out of reach of children.
- Do not operate the appliance with a damaged cord or plug.
- Use only accessories and attachments recommended by the manufacturer.
- Always unplug the appliance when not in use and before cleaning.
- Avoid touching hot surfaces, especially the sealing strip, immediately after use.
3. Product Overview
The Bonsenkitchen VS3803 features an intuitive control panel and a robust sealing mechanism for efficient food preservation.
Control Panel

The control panel includes buttons for 'Seal/Stop', 'Vac Seal', 'Out Vac', and 'Food' (with indicators for Dry and Moist modes). The 'Suction Interface' port is located at the top center for accessory hose connection.
Key Features
- Seal/Stop Button: Initiates sealing or stops any current operation.
- Vac Seal Button: Automatically vacuums and then seals the bag.
- Out Vac Button: Used for vacuuming external containers via the accessory hose.
- Food Button (Dry/Moist): Selects the appropriate sealing mode for dry or moist foods.
- Wide Sealing Area: Accommodates bags up to 11.81 inches (30 cm) wide with an extra-wide 3mm sealing strip.
- Removable Lid: The top and bottom lids can be split for easy cleaning.

This image illustrates the compact size and the maximum sealing width of 11.81 inches (30 cm) for vacuum bags.
4. Setup
Before first use, ensure the appliance is clean and dry. Place the vacuum sealer on a flat, stable surface.
- Plug the power cord into a suitable electrical outlet. The 'Dry' indicator light will illuminate.
- Open the lid by pressing the release buttons on both sides of the appliance.
- Ensure the sealing strip and vacuum channel are clean and free of debris.
5. Operating Instructions
The VS3803 offers versatile sealing options for various food types and containers.
5.1. Vacuum Sealing Bags (Dry/Moist Foods)
Follow these steps for vacuum sealing food in bags:
- Prepare your food and place it into a vacuum sealer bag, leaving at least 8-10 cm of space from the top for sealing. Do not overfill.
- For moist foods, ensure there is no water or oil in the mouth of the bag to ensure a proper seal.
- Place the open end of the bag into the vacuum slot, ensuring it lies flat across the sealing strip.
- Close the lid firmly by pressing down on both sides until you hear a click, indicating it is locked.
- Select the appropriate food mode: Press the 'Food' button to toggle between 'Dry' (green light) and 'Moist' (red light) settings.
- Press the 'Vac Seal' button. The machine will automatically vacuum the air from the bag and then seal it.
- Once the 'Seal' and 'Vac Seal' indicator lights extinguish, the process is complete.
- Press the release buttons on both sides to open the lid and remove the sealed bag.

This image provides a visual step-by-step guide for operating the vacuum sealer, from preparing the bag to completing the seal.
5.2. Accessory Hose Operation (for Canisters/Zipper Bags)
To vacuum seal external containers or zipper bags:
- Insert one end of the accessory hose into the 'Suction Interface' port on the appliance.
- Insert the other end of the hose into the port on your vacuum-sealable canister or zipper bag.
- Press the 'Out Vac' button. The machine will begin to vacuum the container.
- When the vacuuming is complete (the sound stops), remove the hose from both the appliance and the container.
5.3. Video Demonstration
Watch this official video demonstration of the Bonsenkitchen VS3803 Vacuum Sealer. It covers dry vacuum operation, moist vacuum operation, and accessory hose usage for various food items and containers, providing a comprehensive visual guide to the machine's functions.
6. Maintenance and Cleaning
Regular cleaning ensures optimal performance and longevity of your vacuum sealer.
- Always unplug the appliance before cleaning.
- Wipe the exterior of the appliance with a soft, damp cloth. Do not use abrasive cleaners.
- The top and bottom lids are removable for thorough cleaning. Split the lids by gently pulling them apart at approximately 90 degrees vertically. The bottom lid is washable.
- Clean the vacuum channel and sealing strip with a damp cloth to remove any food residue. Ensure these areas are completely dry before closing the lid or using the appliance again.

This image shows how the removable top and bottom lids can be separated for easy and hygienic cleaning.
7. Troubleshooting
If you encounter issues with your vacuum sealer, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine does not turn on | Not plugged in; Power outlet issue | Ensure power cord is securely plugged in; Test with a different outlet. |
| Bag does not vacuum properly | Lid not closed correctly; Bag not positioned correctly; Bag is damaged; Moisture in bag opening | Press down firmly on both sides of the lid until it clicks; Ensure bag opening is flat in the vacuum channel; Use a new bag; Ensure bag opening is dry. |
| Bag does not seal | Sealing strip is dirty or wet; Sealing strip is worn; Overheating | Clean and dry the sealing strip; Allow machine to cool down for 20-30 seconds between seals. |
| Air leaks into sealed bag | Bag puncture; Incomplete seal; Food with sharp edges | Inspect bag for holes and use a new one; Ensure proper sealing technique; Pad sharp food items with a paper towel. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Bonsenkitchen |
| Model | VS3803 |
| Power Source | Corded Electric |
| Operation Mode | Automatic |
| Wattage | 110 watts |
| Color | White |
| Item Weight | 3.16 pounds |
| Package Dimensions | 16.38 x 6.81 x 4.17 inches |
9. Warranty and Support
Bonsenkitchen is committed to providing excellent customer service. If you encounter any problems with your VS3803 Vacuum Sealer Machine or require assistance, please contact Bonsenkitchen customer support. Refer to your product packaging or the official Bonsenkitchen website for specific warranty details and contact information.