1. Introducció i finalview
This manual provides essential instructions for the proper setup, operation, and maintenance of your Ohaus Defender 3000 Bench Scale, Model D31P15BR. Please read this manual thoroughly before using the scale to ensure accurate and safe operation.

Image 1.1: Ohaus Defender 3000 Bench Scale, Model D31P15BR. This image displays the complete bench scale unit, including the weighing platform, support column, and digital indicator.
Característiques principals:
- Capacitat: 33 lb / 15 kg (depending on calibration unit used).
- Resolució: 1:6000 to 7500d; NTEP certified and Measurement Canada approved to 3,000e.
- Construcció: 304 stainless steel pan with painted carbon steel frame and aluminum IP67 load cell.
- Indicador: High-impact durable ABS plastic housing with a reversible face for wall, column, or table-top mounting.
- Estabilitat: Adjustable non-slip rubber leveling feet with an externally visible level indicator.
2. Configuració
2.1 Desembalatge i inspecció
Carefully remove all components from the packaging. Inspect the scale for any signs of damage that may have occurred during transit. Retain packaging materials for future transport or storage.
2.2 Col·locació
Place the scale on a stable, level surface free from vibrations, drafts, and extreme temperature changes. Ensure adequate space around the scale for operation and maintenance.
2.3 Anivellar l'escala
- Locate the bubble level indicator, typically found near the indicator or on the base.
- Adjust the four non-slip rubber leveling feet by turning them clockwise or counter-clockwise until the bubble is centered within the indicator circle. This ensures accurate weighing.
2.4 Indicator Mounting
The indicator features a reversible face and can be mounted in several configurations:
- Muntatge en columna: Attach the indicator to the provided column using the appropriate hardware.
- Muntatge en paret: Secure the indicator to a wall using suitable fasteners (not included) through the designated mounting points.
- Table-Top Mount: Position the indicator on a flat surface next to the weighing platform.
Ensure all connections between the indicator and the weighing platform are secure before proceeding.
3. Funcionament
3.1 Engegada/apagada
Connect the scale to a suitable power source. Press the ON/OFF button on the indicator to power the scale on or off. The backlit liquid crystal display (LCD) will illuminate upon startup.
3.2 Pesatge bàsic
- Ensure the scale is powered on and displays "0.00" or a stable zero reading. If not, press the ZERO botó.
- Carefully place the item to be weighed onto the center of the stainless steel weighing pan.
- Wait for the reading on the display to stabilize. The displayed value represents the weight of the item.
- Remove the item from the pan. The display should return to zero.
3.3 Taring (Subtracting Container Weight)
To weigh an item in a container, use the Tare function:
- Col·loqueu el recipient buit al plat de pesatge.
- Premeu el botó TARA button. The display will show "0.00" and a "T" or "NET" indicator, indicating the container's weight has been tared out.
- Place the item to be weighed into the container. The display will show only the net weight of the item.
- Remove both the item and container. The display may show a negative value equal to the tared weight. Press ZERO per tornar a zero.
4. Manteniment
4.1 Neteja
Regular cleaning helps maintain the scale's performance and longevity. The weighing pan is made of 304 stainless steel, and the indicator housing is high-impact ABS plastic.
- Wipe the scale surfaces with a damp drap i un detergent suau.
- No utilitzeu netejadors abrasius, dissolvents ni productes químics agressius, ja que poden danyar l'acabat o els components interns.
- Ensure no liquids enter the indicator housing or the load cell area. Although the load cell is IP67 rated for dust and water ingress, proper care is recommended.
- Always disconnect the scale from the power source before cleaning.
4.2 Calibració
The Ohaus Defender 3000 Bench Scale is factory calibrated. However, periodic calibration may be required to maintain accuracy, especially after relocation or significant temperature changes. Refer to the full technical manual for detailed calibration procedures or contact authorized service personnel.
5. Solució De Problemes
If you encounter issues with your scale, refer to the following common troubleshooting steps:
| Problema | Causa possible | Solució |
|---|---|---|
| La bàscula no s'encén | No power supply; loose cable | Comproveu la connexió elèctrica; assegureu-vos que la presa de corrent funcioni. |
| Lectures inexactes | Scale not level; drafts; calibration required | Level the scale; move to a stable environment; perform calibration. |
| Display shows "OVERLOAD" | El pes supera la capacitat | Elimina l'excés de pes immediatament. |
| Lectures inestables | Vibrations; air currents; damaged load cell | Relocate scale; shield from drafts; contact service if persistent. |
For issues not listed here or if problems persist, please contact Ohaus customer support or an authorized service technician.
6. Especificacions
Detailed technical specifications for the Ohaus Defender 3000 Bench Scale Model D31P15BR:
| Especificació | Detall |
|---|---|
| Marca | Ohaus |
| Número de model | D31P15BR (Manufacturer Part Number: 30369116) |
| Capacitat | 33 lliures / 15 kg |
| Exactitud de lectura | 0.005 lliures (2 g) |
| Resolució | 1:6000 to 7500d; NTEP certified to 3,000e |
| Tipus de visualització | Backlit Liquid Crystal Display (LCD) |
| Tipus de bàscula | Escala de comptador |
| Tipus de mesura | Imperial / mètric |
| Material (Pan) | Acer inoxidable 304 |
| Material (marc) | Painted Carbon Steel |
| Material (Load Cell) | Aluminum, IP67 rated |
| Material (Indicator Housing) | Acrilonitril butadiè estirè (ABS) |
| Pes de l'article | 33 lliures |
| Característiques especials | Adjustable Leveling Feet, NTEP Certification, Reversible Indicator Face |
7. Garantia i Suport
For detailed warranty information, please refer to the official warranty statement provided with your product or visit the Ohaus weblloc web. Conserveu el rebut de compra com a comprovant de compra.
For technical support, service, or spare parts, please contact your local Ohaus representative or visit the official Ohaus support portal. Provide your model number (D31P15BR) and serial number when requesting support.