RUJIXU Large Digital Kitchen Scale (30kg/66lb) Instruction Manual

1. Introduction

Thank you for choosing the RUJIXU Large Digital Kitchen Scale. This precision instrument is designed for accurate weighing in various settings, from home kitchens to commercial environments. With a maximum capacity of 30kg (66lb) and multiple functions including tare, unit conversion, price computing, and counting, this scale offers versatility and reliability. Please read this manual thoroughly before use to ensure proper operation and longevity of your device.

Image 1.1: RUJIXU Large Digital Kitchen Scale (Model DT-580)

2. Product Components and Features

2.1 Key Features

• High Capacity: Weighs items from 3g up to 30kg (66lb).
• Multiple Units: Supports grams (G), kilograms (KG), pounds (LB), and ounces (OZ).
• Tare Function: Allows subtraction of container weight for net measurements.
• Counting Function (PCS): Enables counting of small, identical items.
• Price Computing: Calculates price based on weight and unit price input.
• LCD Backlit Display: Provides clear and easy-to-read measurements, even in varying light conditions.
• Durable Construction: Features a stainless steel platform and ABS plastic frame.
• Dual Power Supply: Operates with an AC power adapter or 2x 1.5V AA batteries (not included).
• Auto-Off: Automatically shuts off after 120 seconds of inactivity to conserve power.

2.2 Dimensions

Image 2.1: Scale Dimensions

The scale features a stainless steel weighing surface measuring approximately 7 inches by 8.7 inches (18cm by 22cm). The overall product dimensions are 9.8 x 9 x 2.5 inches (24.9 x 22.9 x 6.4 cm).

3. Setup

3.1 Unpacking

Carefully remove all components from the packaging. Ensure that the scale, AC power adapter, and user manual are present.

3.2 Power Supply

The scale can be powered by either the included AC power adapter or two 1.5V AA batteries (not included).

• AC Power: Connect the AC power adapter to the scale's power input port and then plug it into a standard electrical outlet.
• Battery Power: Open the battery compartment on the underside of the scale and insert two 1.5V AA batteries, observing the correct polarity.

Note: The two power sources cannot be used simultaneously. If both are connected, the scale will prioritize AC power.

Image 3.1: Power Supply Modes

3.3 Placement

Place the scale on a firm, flat, and stable surface to ensure accurate readings. Avoid placing it near strong electromagnetic fields, vibrations, or extreme temperature changes.

4. Operation

4.1 Turning On/Off

• To turn on the scale, press the ON/OFF button. The display will light up and show "0.000".
• To turn off the scale, press and hold the ON/OFF button for a few seconds until the display turns off.

4.2 Unit Switching

The scale supports four units of measurement: grams (G), kilograms (KG), pounds (LB), and ounces (OZ).

• With the scale on, press the MODE button to cycle through the available units. The selected unit will be displayed on the LCD screen.

Image 4.1: Unit Switching

4.3 Tare Function

The tare function allows you to subtract the weight of a container, so you only measure the net weight of its contents.

1. Place the empty container on the weighing platform. The display will show the container's weight.
2. Press the TARE button. The display will reset to "0.000".
3. Add the items you wish to weigh into the container. The display will now show only the weight of the items.

Image 4.2: Tare Function Steps

4.4 Counting Function (PCS)

The PCS function is useful for counting small, identical items such as screws, coins, or beads.

1. Turn on the scale and ensure it reads "0.000".
2. Press and hold the PCS button for approximately 5 seconds. The display will show a sample size (e.g., "25").
3. Use the number pad to enter the quantity of items you will use as a sample (e.g., "10", "20", "50", "100").
4. Place the sample quantity of items on the platform.
5. Press the PCS button again to confirm the sample. The scale is now calibrated for counting.
6. Remove the sample and place the bulk quantity of items you wish to count on the platform. The display will show the total count.

Image 4.3: Counting Function Steps

4.5 Price Computing Function

This function allows you to calculate the total price of items based on their weight and a set unit price.

1. Turn on the scale and ensure it reads "0.000".
2. Place the item(s) to be weighed on the platform. The scale will display the weight.
3. Using the number pad, enter the unit price (e.g., price per KG or LB).
4. The scale will automatically calculate and display the total price.

Image 4.4: Price Computing in Use

4.6 Auto-Off Feature

To conserve battery life, the scale is equipped with an automatic shut-off feature. If no operation is performed for approximately 120 seconds, the scale will power down.

5. Maintenance

5.1 Cleaning

The stainless steel platform and ABS plastic body are designed for easy cleaning.

• Wipe the scale surface with a soft, damp cloth.
• For stubborn stains, a mild detergent can be used.
• Do not immerse the scale in water or use abrasive cleaners, as this can damage the electronic components.
• Ensure the scale is completely dry before storage or next use.

Image 5.1: Food-Grade Stainless Steel Platform

5.2 Storage

Store the scale in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries to prevent leakage.

6. Troubleshooting

• Scale does not turn on:
  • Check if the AC adapter is securely plugged in.
  • If using batteries, ensure they are inserted correctly with the right polarity and are not depleted. Replace if necessary.
• Inaccurate readings:
  • Ensure the scale is placed on a flat, stable, and level surface.
  • Avoid placing the scale near sources of vibration or drafts.
  • Make sure no objects are touching the scale or platform during weighing.
  • Recalibrate the scale if possible (refer to specific instructions if available, otherwise, turn off and on).
  • Ensure the weight limit (30kg/66lb) is not exceeded.
• Display is dim or unreadable:
  • Check battery level if operating on batteries.
  • Ensure the scale is not in direct sunlight or extremely bright conditions that might wash out the display. The LCD is designed for full view, but extreme glare can still affect visibility.
• "EEEE" or "O-Ld" error message:
  • This indicates an overload. Remove items from the platform immediately to prevent damage.

Image 6.1: Improved LCD Display Visibility

7. Specifications

Image 7.1: Product Specifications Table