A&D Medical HL-3000WPN
A&D HL-3000WPN HL-WP Series Washdown Compact Scale User Manual
Model: HL-3000WPN
1. Introduction
This manual provides essential information for the proper use, setup, operation, and maintenance of your A&D HL-3000WPN HL-WP Series Washdown Compact Scale. Please read this manual thoroughly before using the scale to ensure correct operation and to prevent damage.
2. Safety Precautions
- Do not disassemble or modify the scale. This may cause damage or malfunction.
- Avoid exposing the scale to extreme temperatures, direct sunlight, or high humidity.
- Ensure the scale is placed on a stable, level surface to obtain accurate measurements.
- Do not overload the scale beyond its maximum capacity of 3000g (6.6 lb).
- Clean the scale with a damp cloth and mild detergent. Do not use abrasive cleaners or solvents.
3. Product Overview
The A&D HL-3000WPN is a compact, washdown-capable digital scale designed for various weighing applications. Its stainless steel construction ensures durability and ease of cleaning.

Figure 3.1: A&D HL-3000WPN HL-WP Series Washdown Compact Scale. This image shows the stainless steel scale with its digital display and control buttons. The display reads '0.0 oz', and the buttons are labeled 'ON/OFF', 'RE-ZERO', and 'UNITS'. Indicators for 'STABLE' and 'ZERO' are also visible.
Key Components:
- Weighing Pan: Stainless steel platform for placing items.
- Display: Digital LCD showing weight readings and status indicators.
- ON/OFF Button: Powers the scale on or off.
- RE-ZERO Button: Resets the display to zero (tare function).
- UNITS Button: Toggles between available weighing units (g, lb, oz).
- STABLE Indicator: Lights up when the weight reading is stable.
- ZERO Indicator: Lights up when the display is at zero.
4. Setup
4.1 Unpacking
- Carefully remove the scale and all accessories from the packaging.
- Check for any visible damage. If damage is found, contact your supplier immediately.
- Retain the packaging for future transport or storage.
4.2 Power Supply
The HL-3000WPN scale operates on AC adapter (not included) or batteries (not included). Ensure the correct power source is used as specified by the manufacturer.
4.3 Placement
- Place the scale on a firm, level, and vibration-free surface.
- Avoid locations with direct sunlight, rapid temperature changes, or strong air currents (e.g., near air conditioning vents).
- Ensure sufficient space around the scale for proper operation and cleaning.
5. Operating Instructions
5.1 Basic Weighing
- Press the ON/OFF button to turn on the scale. The display will show '0.0' or '0.00' after a brief self-test.
- Ensure the display reads zero before placing an item on the weighing pan. If not, press the RE-ZERO button.
- Gently place the item to be weighed on the center of the weighing pan.
- Wait for the STABLE indicator to light up. Read the weight displayed.
- Remove the item from the pan.
5.2 Changing Weighing Units
To switch between available weighing units (grams, pounds, ounces):
- With the scale on, press the UNITS button.
- Each press will cycle through the available units (e.g., g → lb → oz → g).
- Select the desired unit for your measurement.
5.3 Tare Function (RE-ZERO)
The tare function allows you to weigh items in a container by subtracting the container's weight:
- Place the empty container on the weighing pan.
- Wait for the weight reading to stabilize.
- Press the RE-ZERO button. The display will return to zero, and the ZERO indicator will light up.
- Place the item to be weighed into the container. The display will show the net weight of the item.
6. Maintenance
6.1 Cleaning
- Regularly clean the weighing pan and the scale body.
- Use a soft cloth dampened with water and a mild, non-abrasive detergent.
- For washdown, ensure all covers are properly sealed. Do not use high-pressure water jets directly on the display or buttons.
- Dry the scale thoroughly after cleaning.
6.2 Storage
- When not in use for extended periods, store the scale in a dry, cool place.
- If using batteries, remove them before long-term storage to prevent leakage.
6.3 Calibration
The scale is factory calibrated. If you suspect accuracy issues, refer to the full technical manual or contact A&D Medical for calibration procedures or service. Regular calibration by a qualified technician is recommended for applications requiring high precision.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Scale does not turn on | No power supply; dead batteries; faulty AC adapter | Check battery installation/charge; ensure AC adapter is properly connected and functional. |
| Inaccurate readings | Scale not level; unstable surface; drafts; overload; calibration required | Place on a stable, level surface; avoid drafts; ensure weight is within capacity; consider professional calibration. |
| Display shows 'Err' or 'OL' | Overload | Remove excess weight from the pan. Do not exceed maximum capacity. |
| Display is blank or flickering | Low battery; power connection issue | Replace batteries or check AC adapter connection. |
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | HL-3000WPN |
| Capacity | 3000g / 6.6 lb / 105.8 oz |
| Readout Accuracy | 1g / 0.002 lb / 0.1 oz |
| Material | Stainless Steel |
| Item Weight | 5 Pounds |
| Form Factor | Mini Bench Scale |
| First Available | September 22, 2014 |
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation included with your product or visit the official A&D Medical website. Contact details for customer service are typically provided on the manufacturer's website or in the product packaging.
Note: This manual provides general guidance. Specific warranty terms and support procedures may vary.
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