1. Product Overview
The Yamato DP-6900-300 is a Class III, legal for trade bench/receiving scale designed for accurate weighing applications. It features a robust construction with a removable stainless steel platform and a clear LCD display. This manual provides essential information for the proper setup, operation, and maintenance of your scale.
Key Features:
- Capacity: 300 lb x 0.1 lb (150 kg x 0.05 kg)
- Units: Selectable between lb/oz (NON-NTEP), kg, lb, oz
- Display: 1.3-inch, 5-digit LCD with annunciators, tiltable and rotatable
- Platform: 13.8" x 19.7" removable stainless steel
- Power: AC Adaptor or rechargeable battery
- Functions: Push-button tare, adjustable automatic shut-off, checkweighing with over/under indicator
2. Setup Instructions
2.1 Unpacking and Inspection
Carefully remove all components from the packaging. Inspect the scale for any signs of damage that may have occurred during transit. Retain all packaging materials for future transport or storage.
2.2 Assembly
- Attach the Pole: Securely fasten the display pole to the base of the scale. Ensure it is firmly seated and tightened to prevent wobbling.
- Mount the Display Unit: Attach the display unit to the top of the pole. The display is designed to be tilted and rotated for optimal viewing angles.
- Place the Platform: Position the removable stainless steel platform onto the scale base. Ensure it sits flat and securely.
Figure 1: Fully assembled Yamato DP-6900-300 scale, showing the display unit, pole, and stainless steel platform.
2.3 Power Connection
- AC Adaptor: Connect the provided AC adaptor to the scale's power input and then to a standard electrical outlet.
- Rechargeable Battery: The scale includes a rechargeable battery. For initial use, it is recommended to charge the battery fully. The scale can operate on battery power for portability.
2.4 Leveling the Scale
For accurate measurements, ensure the scale is placed on a firm, level surface. Use the adjustable feet at the base of the scale to level it. Check the built-in bubble level (if present) or use a separate spirit level to confirm proper leveling.
3. Operating Instructions
3.1 Power On/Off
- Press the ON/OFF button located on the display unit to power the scale on or off.
- Allow a few seconds for the scale to stabilize and display "0.0" before use.
Figure 2: Detailed view of the DP-6900 display unit, highlighting the ON/OFF button and LCD screen.
3.2 Unit Selection
To change the weighing unit (lb, kg, oz, lb/oz), press the UNIT button. The display will cycle through the available units. Note that lb/oz is for non-NTEP applications.
3.3 Tare Function
The tare function allows you to subtract the weight of a container, so only the net weight of the item is displayed.
- Place the empty container on the scale platform.
- Press the TARE button. The display will show "0.0" and the tare indicator will illuminate.
- Add the item to be weighed into the container. The display will show the net weight of the item.
- To clear the tare, remove the container from the platform and press the TARE button again.
Figure 3: Scale displaying a weight of 50.0 units, with calibration weights on the platform.
3.4 Checkweighing Function
The checkweighing function allows you to set target weight limits (over/under) for efficient batching or quality control.
- Refer to the full user manual for detailed instructions on setting checkweighing limits.
- The display will provide visual indicators (e.g., arrows or lights) for "under," "acceptable," or "over" the set weight range.
3.5 Automatic Shut-Off
The scale features an adjustable automatic shut-off to conserve battery life. This feature can be configured or disabled through the scale's settings menu. Consult the full manual for adjustment procedures.
4. Maintenance
4.1 Cleaning
- The stainless steel platform can be removed for easy cleaning.
- Wipe the platform and display unit with a soft, damp cloth. Use mild soap if necessary.
- Do not use abrasive cleaners, solvents, or immerse the display unit in water.
- Ensure the scale is powered off and unplugged before cleaning.
Figure 4: The durable stainless steel weighing platform, designed for easy removal and cleaning.
4.2 Battery Care
- To maximize battery life, fully charge the battery before first use and after extended periods of storage.
- If the scale will not be used for a long time, it is advisable to charge the battery periodically (e.g., every 3 months) to prevent deep discharge.
- Avoid operating the scale in extreme temperatures, which can affect battery performance.
5. Troubleshooting
This section addresses common issues you might encounter with your Yamato DP-6900-300 scale. For more complex problems, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Scale does not power on | No power from AC adaptor; discharged battery; faulty power button. | Check AC adaptor connection and power outlet. Charge the battery. If issue persists, contact support. |
| Inaccurate readings | Scale not level; external vibrations; foreign objects under platform; calibration required. | Ensure scale is on a level, stable surface. Remove any obstructions. Perform calibration if necessary (refer to full manual). |
| Battery does not hold charge | Battery not fully charged; aging battery; faulty charging circuit. | Ensure proper charging time. If battery life is significantly reduced, the battery may need replacement. Contact support. |
| Display shows error message | Overload; internal error. | Remove excess weight. Power cycle the scale. If the error persists, consult the full manual for specific error codes or contact support. |
6. Specifications
| Feature | Detail |
|---|---|
| Model | DP-6900-300 |
| Brand | Yamato |
| Capacity | 300 lb x 0.1 lb (150 kg x 0.05 kg) |
| Legal for Trade | Class III, NTEP Certified |
| Weighing Units | lb/oz (NON-NTEP), kg, lb, oz |
| Display | 1.3" LCD, 5 digits + annunciators, tilt/rotate function |
| Platform Size | 13.8" x 19.7" (350mm x 500mm) |
| Platform Material | Removable Stainless Steel |
| Power Source | AC Adaptor, Rechargeable Battery |
| Special Features | Push-button tare, adjustable auto shut-off, checkweighing with over/under indicator |
| Item Weight | Approximately 43 pounds (19.5 kg) |
7. Warranty and Support
For information regarding the warranty period and terms for your Yamato DP-6900-300 scale, please refer to the documentation included with your purchase or contact the retailer/manufacturer directly. Warranty details can vary by region and seller.
For technical support, service, or to inquire about replacement parts, please contact Yamato customer service or visit the official Yamato store online: