1. Увод
This manual provides instructions for the proper setup, operation, and maintenance of your Happybuy 110 LBS Refrigerant Scale. This high-precision digital scale is designed for accurate weighing of refrigerants during HVAC charging and recovery processes. It features a wired remote control for convenient operation and a robust design for durability.

Слика 1.1: The Happybuy Refrigerant Scale highlighting its 110 LBS maximum capacity, 2g accuracy, 0.05% resolution, and KG/OZ/LBS unit conversion capabilities.
2. Безбедносне информације
Please read and understand all safety instructions before operating the scale. Failure to do so may result in injury or damage to the product.
- The scale is certified with FCC and CE marks, ensuring compliance with quality and safety standards.
- Always place the scale on a flat, stable, and level surface to ensure accurate readings and prevent tipping.
- The scale is equipped with non-slip rubber pads to provide a secure platform and minimize the risk of items sliding.
- An overload warning, indicated by "FULL" on the display, will appear if the weight exceeds the maximum capacity. Do not exceed the 110 lbs (50 kg) capacity to prevent sensor damage.
- Keep the scale away from extreme temperatures, moisture, and direct sunlight.

Слика 2.1: The scale's safety design, including FCC and CE certifications, and the durable storage case.
3. Шта је у кутији
Проверите да ли су све компоненте присутне приликом распакивања:
- 1 x Refrigerant Scale Platform
- 1 к жичани даљински управљач
- 1 x 9V Dry Battery
- 1 к заштитна торбица за ношење
- 1 x Упутство за употребу (овај документ)

Слика 3.1: The complete package including the scale platform, wired remote, 9V battery, and carrying case.
4. Подешавање
4.1 Инсталација батерије
- Locate the battery compartment on the back of the wired remote control.
- Отворите поклопац одељка за батерије.
- Insert the included 9V dry battery, ensuring correct polarity (+/-).
- Добро затворите поклопац одељка за батерије.

Слика 4.1: The wired remote control, showing the display, control buttons, and the 9V battery for power.
4.2 Постављање скале
- Choose a flat, stable, and level surface for the scale platform. Uneven surfaces can affect measurement accuracy.
- Ensure the anti-slip rubber surface of the scale is clean and free of debris.
- Connect the wired remote control to the scale platform.
- The remote control features a 120° adjustable stand, allowing you to position the LCD display for optimal viewing without holding it.

Слика 4.2: Proper setup of the refrigerant scale on a level surface, demonstrating the anti-slip rubber surface and the adjustable stand on the remote control.
5. Упутство за употребу
The remote control features a 4-button interface for easy operation:
- УКЉУЧЕНО/ИСКЉУЧЕНО: Press to power the scale on or off.
- ZERO (Z/T): Press to zero the display or tare the current weight. This is essential before placing a refrigerant tank to measure only the added or removed refrigerant.
- ЈЕДИНИЦА: Press to cycle through the available measurement units: Kilograms (KG), Pounds (LB), and Ounces (OZ).
- LAMP (Backlight): Press to turn the LCD display backlight on or off for improved visibility in various lighting conditions.
5.1 Аутоматске функције
- Аутоматско искључивање: The scale will automatically power off after 10 minutes of inactivity to conserve battery life.
- Backlight Auto Off: The backlight will automatically turn off after 3 minutes of inactivity.

Слика 5.1: Illustration of the automatic shut-off (10 minutes) and backlight off (3 minutes) features designed to extend battery life.
6. Одржавање и складиштење
6.1 Одржавање батерије
- For prolonged periods of non-use, remove the 9V battery from the remote control to prevent potential leakage and damage to the device.
- Replace the battery when the display indicates low power or becomes dim.
6.2 Чишћење
- Обришите платформу ваге и даљински управљач меком крпомamp тканина.
- Не користите абразивна средства за чишћење нити урањајте јединицу у воду.
6.3 Складиштење
- Store the scale and its components in the included waterproof and dustproof plastic carrying case.
- Ensure the robust buckle design of the case is securely fastened to prevent accidental opening during transport.
- Чувати на хладном и сувом месту далеко од директне сунчеве светлости и екстремних температура.

Слика 6.1: The secure buckle mechanism of the dustproof and waterproof carrying case, ensuring safe storage and transport.
КСНУМКС. Решавање проблема
| Проблем | Могући узрок | Решење |
|---|---|---|
| Вага се не укључује. | Батерија је празна или је неправилно инсталирана. | Проверите поларитет батерије. Замените је новом батеријом од 9 V. |
| Нетачна очитавања. | Scale is on an uneven surface; not zeroed; overloaded. | Place scale on a flat, level surface. Press ZERO before weighing. Ensure weight does not exceed 110 lbs. |
| На дисплеју се приказује „ПУНО“. | Weight on the scale exceeds its maximum capacity. | Remove excess weight immediately to prevent sensor damage. The maximum capacity is 110 lbs (50 kg). |
| Екран је слаб или трепери. | Ниска батерија. | Замените 9В батерију. |
8. Спецификације
| Феатуре | Спецификација |
|---|---|
| Капацитет вагања | 50 кг / 110 лбс |
| Прецизност | 2 г |
| Резолуција | 0.05% |
| Product Dimensions (Scale) | 425 к 310 к 66 мм / 16.7 к 12.2 к 2.6 инча |
| Нето тежина | 3.25 кг / 7.2 лбс |
| Волtage | DC 9V (1 x 9V dry battery) |
| Ремоте Цонтрол | Wired, 4-button control with backlit LCD |
| Број модела | ЛКС-36575А |

Слика 8.1: Detailed dimensions of the scale platform, remote control, and carrying case.