1. Introduction
This manual provides essential instructions for the safe and efficient operation, setup, and maintenance of your Yamato AW-WLG 15 IP67 Rated Dual Range Washdown Portion Control Scale. Please read this manual thoroughly before using the scale to ensure proper function and longevity of the device.
The AW-WLG 15 is a robust washdown scale designed for portion control, featuring an IP67 rating for water and dust resistance. It includes a removable stainless steel platform and a clear LCD display.

An image of the Yamato AW-WLG 15 IP67 Rated Dual Range Washdown Portion Control Scale, showing its stainless steel platform and LCD display with control buttons.
2. Safety Information
- Always operate the scale on a stable, level surface.
- Do not overload the scale beyond its maximum capacity (30 lb / 13.6 kg).
- Avoid dropping the scale or subjecting it to severe impacts.
- Ensure the AC adapter is properly connected and used in a dry environment, even though the scale itself is washdown rated.
- Keep the scale away from strong electromagnetic fields.
- For cleaning, refer to the "Maintenance" section.
3. Package Contents
Verify that all items are present upon unpacking:
- Yamato AW-WLG 15 Portion Control Scale
- Stainless Steel Platter (9.4" x 7.3")
- AC Adapter
- User Manual (this document)
4. Component Identification
Familiarize yourself with the main components of the scale:
- Weighing Platform: Removable stainless steel surface for placing items.
- LCD Display: 1-inch, 5-digit LCD with backlight for weight readings and status indicators.
- Control Panel: Buttons for operation (e.g., ON/OFF, TARE, UNIT, HOLD).
- Power Input: Port for connecting the AC adapter.
- Battery Compartment: Located on the underside for optional battery operation.
5. Setup
5.1 Unpacking
- Carefully remove the scale and all accessories from the packaging.
- Inspect the scale for any signs of damage. If damaged, do not use and contact customer support.
- Place the stainless steel platter securely on the scale base.
5.2 Power Connection
The scale can be powered by the included AC adapter or by batteries (not included).
- AC Adapter: Connect the AC adapter to the power input port on the scale and then plug it into a suitable power outlet.
- Battery Operation: Open the battery compartment on the underside of the scale. Insert the required batteries (e.g., AA or C, refer to compartment label) ensuring correct polarity. Close the compartment securely.
5.3 Placement
Place the scale on a firm, level, and stable surface, free from vibrations, drafts, and direct sunlight. Ensure adequate space around the scale for safe operation and cleaning.
6. Operating Instructions
6.1 Turning On/Off
- To Turn On: Press the ON/OFF button. The display will show a self-test sequence and then settle at "0.000".
- To Turn Off: Press and hold the ON/OFF button until the display turns off.
6.2 Unit Selection
The scale supports multiple weighing units: pounds (lb), ounces (oz), pounds/ounces (lb/oz), and kilograms (kg).
- Press the UNIT button to cycle through the available weighing units. The selected unit will be indicated on the display.
6.3 Tare Function
The Tare function allows you to subtract the weight of a container, so only the net weight of the contents is displayed.
- Place an empty container on the weighing platform.
- Wait for the display to stabilize.
- Press the TARE button. The display will reset to "0.000" with the tare indicator active.
- Add items to the container; only their weight will be shown.
- To clear the tare, remove the container and press the TARE button again.
6.4 Hold Feature
The Hold feature allows the display to temporarily freeze a weight reading, even after the item is removed from the platform.
- Place an item on the platform and wait for the weight to stabilize.
- Press the HOLD button. The current weight will be held on the display.
- To release the hold and return to live weighing, press the HOLD button again.
7. Maintenance
7.1 Cleaning
The Yamato AW-WLG 15 scale is IP67 rated, making it suitable for washdown cleaning.
- Ensure the AC adapter is disconnected before cleaning.
- Use a mild detergent and a soft cloth or sponge to clean the stainless steel platform and ABS housing.
- Rinse with water. Avoid high-pressure sprays directly onto the display or button areas, although the unit is sealed.
- Dry the scale thoroughly with a clean cloth before reconnecting power or storing.
- Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the scale's finish or internal components.
7.2 Battery Replacement
If operating on batteries, replace them when the low battery indicator appears on the display.
- Turn off the scale and disconnect the AC adapter.
- Locate and open the battery compartment cover on the underside of the scale.
- Remove the old batteries and dispose of them according to local regulations.
- Insert new batteries, ensuring correct polarity.
- Close the battery compartment cover securely.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Scale does not turn on. | No power, dead batteries, or faulty AC adapter. | Check AC adapter connection and power outlet. Replace batteries if using battery power. |
| Inaccurate readings. | Scale not level, unstable surface, or external interference. | Ensure scale is on a stable, level surface. Remove any sources of vibration or drafts. |
| "O_LOAD" or "Err" message. | Scale overloaded. | Remove excess weight immediately. Do not exceed maximum capacity. |
| Display flickering or unstable. | Low battery, unstable power, or electromagnetic interference. | Replace batteries or ensure stable AC power. Move scale away from other electronic devices. |
If troubleshooting steps do not resolve the issue, please contact Yamato customer support.
9. Specifications
- Model: AW-WLG 15
- Capacity: Dual Range: 0-15 lb x 0.005 lb; 15-30 lb x 0.01 lb (equivalent to 0-6.8 kg x 0.002 kg; 6.8-13.6 kg x 0.005 kg)
- Units: lb, oz, lb/oz, kg
- Display: 1-inch, 5-digit LCD with backlight
- Platter Size: 9.4" x 7.3" (Stainless Steel)
- Construction: ABS housing with Stainless Steel Platform Cover
- Protection Rating: IP67 (Dust and Water Resistant)
- Power: AC Adapter (Included), Battery operation (Batteries not included)
- Special Features: Hold Feature
- Product Dimensions: 17 x 12 x 10 inches
- Product Weight: Approximately 10 Pounds
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your authorized Yamato dealer or visit the official Yamato website. Please have your model number (AW-WLG 15) and purchase date available when contacting support.
You can find more information and contact details on the Yamato Store on Amazon.





