1. Giriş
The AUTOOL LM120 Digital Manifold Gauge is an intelligent electronic instrument designed to assist in the installation, testing, and maintenance of refrigeration equipment. This includes systems such as air conditioners, refrigerators, and cold storage units. It provides precise measurements for pressure, temperature, and vacuum, along with advanced diagnostic capabilities.
Image 1.1: AUTOOL LM120 Digital Manifold Gauge in use, connected to an automotive air conditioning system.
2. Təhlükəsizlik Məlumatı
Cihazı istifadə etməzdən əvvəl bütün təhlükəsizlik təlimatlarını oxuyun və başa düşün. Bu təlimatlara əməl edilməməsi xəsarət və ya avadanlığın zədələnməsi ilə nəticələnə bilər.
- Always wear appropriate personal protective equipment (PPE), including safety glasses and gloves, when working with refrigeration systems and refrigerants.
- Ensure adequate ventilation in the work area to prevent the accumulation of refrigerant gases.
- Do not expose the device to extreme temperatures, direct sunlight, or corrosive environments.
- Handle refrigerant hoses and connections with care to prevent leaks and accidental discharge.
- Refer to local regulations and industry standards for the safe handling, recovery, and disposal of refrigerants.
- Do not attempt to repair or modify the device. Contact qualified personnel for service.
3. Məhsul bitdiview və Komponentlər
The LM120 Digital Manifold Gauge features a robust design with an intuitive interface. Familiarize yourself with the components shown below.
Image 3.1: Detailed diagram of the LM120 Digital Manifold Gauge components.
- Qarmaq
- Clamp-on Temperature Probe Socket
- LCD displey
- Funksiya düyməsi
- Run/Stop düyməsi
- Sıfır Düymə
- R+/R- Refrigerant Type Selection Buttons
- Qaralma düyməsi
- Vahid düyməsi
- ° C / ° F Düymə
- Güc düyməsi
- Aşağı təzyiq klapan
- Refrigerant Observation Window
- Yüksək təzyiq klapan
- 1/4 inch Low Pressure Inlet
- Relief Valf
- 1/4 inch High Pressure Inlet
- Refrigerant Inlet / Vacuum Pump Inlet
4. Quraşdırma
Before first use, ensure the device is ready for operation.
4.1 İlkin işə salınma
- basın və saxlayın Güc düyməsi (11) to turn on the device.
- The LCD Display (3) will illuminate and show the initial readings.
4.2 Şlanqları Birləşdirən
Connect the appropriate refrigeration hoses to the inlets on the manifold gauge.
- Connect the low-pressure hose to the 1/4 inch Low Pressure Inlet (15).
- Yüksək təzyiq şlanqını şəbəkəyə qoşun 1/4 inch High Pressure Inlet (17).
- Connect the service hose (for vacuum pump or refrigerant tank) to the Refrigerant Inlet / Vacuum Pump Inlet (18).
- Sızmaların qarşısını almaq üçün bütün əlaqələrin sıx olduğundan əmin olun.
4.3 Connecting Temperature Probes (Optional)
For dual temperature measurement, connect compatible clamp-on temperature probes (not included) to the Clamp-on Temperature Probe Socket (2).
5. Əməliyyat Təlimatları
This section details the various functions and how to operate the AUTOOL LM120.
5.1 Üzərində göstərinview
The large LCD provides clear, real-time data for pressure, temperature, and other parameters.
Image 5.1: The smart digital display provides clear readings for various parameters.
5.2 Vahid Seçimi
To change pressure or temperature units:
- düyməsini basın Vahid düyməsi (9) to cycle through available pressure units (e.g., Kpa, Psi, Bar).
- düyməsini basın ° C / ° F Düymə (10) to switch between Celsius and Fahrenheit temperature displays.
5.3 Refrigerant Type Setting
The device has a built-in database of 89 refrigerants. Select the correct refrigerant type for accurate calculations.
Image 5.2: Setting the refrigerant type on the LM120 display.
- istifadə edin R+/R- Refrigerant Type Selection Buttons (7) to scroll through the available refrigerant types.
- Seçiminizi təsdiqləyin.
5.4 Təzyiq ölçülməsi
The LM120 measures both high and low pressures simultaneously.
- Ensure hoses are correctly connected to the high and low-pressure ports of the system.
- The display will show the current high and low pressure readings.
5.5 Temperaturun Ölçülməsi
İsteğe bağlı cl iləamp-on temperature probes, the device can measure dual temperatures.
Image 5.3: High/Low pressure temperature test display.
- Attach the temperature probes to the desired measurement points (e.g., suction line, liquid line).
- The display will show T1 and T2 temperature readings.
5.6 Evaporation Pressure & Temperature Test
This function measures the maximum pressure when the refrigerant changes from liquid to gas and the lowest temperature when the liquid becomes gaseous.
Image 5.4: Evaporation pressure and temperature test results on the display.
5.7 Condensing Pressure & Temperature Test
This function measures the minimum pressure when the refrigerant changes from gas to liquid and the maximum temperature when the gas changes to liquid.
Image 5.5: Condensing pressure and temperature test results on the display.
5.8 Pressure Leakage Test
The device can perform a pressure leakage test, recording leak time and speed.
Image 5.6: Pressure leakage test in progress, showing initial and current pressure values over time.
- Connect the gauge to the system to be tested.
- düyməsini basın Funksiya düyməsi (4) to navigate to the leakage test mode.
- Follow the on-screen prompts to start and monitor the test. The device calculates the pressure difference between the initial and second test pressures to determine if refrigerant is leaking.
5.9 Vakuumun ölçülməsi
The LM120 can measure the percentage of vacuum achieved in a system.
- Connect the vacuum pump to the Refrigerant Inlet / Vacuum Pump Inlet (18).
- Activate the vacuum pump and monitor the vacuum percentage ekranda.
5.10 Superheat and Subcooling Calculation
Leveraging its integrated 89-type refrigerant database, the LM120 can automatically calculate superheat and subcooling temperatures.
Image 5.7: Built-in database of 89 refrigerant types for accurate calculations.
- Ensure the correct refrigerant type is selected (refer to Section 5.3).
- With pressure and temperature probes connected, the device will display calculated superheat and subcooling values.
6. Baxım
Proper maintenance ensures the longevity and accuracy of your LM120 Digital Manifold Gauge.
- Təmizləmə: Cihazı yumşaq, quru bir parça ilə silin. Aşındırıcı təmizləyicilərdən və ya həlledicilərdən istifadə etməyin.
- Yaddaş: Store the gauge in its original case or a protective container in a cool, dry place away from direct sunlight and extreme temperatures.
- Şlanqın yoxlanılması: Regularly inspect refrigerant hoses for cracks, wear, or damage. Replace damaged hoses immediately.
- Bağlantı yoxlanışı: Ensure all connections and valves are clean and free of debris.
7. Giderme
If you encounter issues with your LM120, refer to the following common problems and solutions.
| Problem | Mümkün Səbəb | Həll |
|---|---|---|
| Cihaz işə düşmür | Low or depleted internal battery; power button not pressed correctly. | Ensure the device is charged or has sufficient power. Press and hold the Power Button firmly. |
| Inaccurate pressure/temperature readings | Incorrect refrigerant selected; loose hose connections; faulty probes; sensor calibration needed. | Verify the correct refrigerant type. Check all hose connections for tightness. Ensure temperature probes are clean and properly connected. Perform a zero calibration if available (using Zero Button). |
| Ekran tutqun və ya oxunmur | Backlight off; low battery. | Press the Dimming Button (8) to adjust backlight. Ensure the device is charged. |
| Leakage test shows false positive/negative | Improper connection; external temperature fluctuations; insufficient test duration. | Ensure all connections are absolutely leak-free. Conduct the test in a stable environment. Allow sufficient time for the test to complete. |
8. Spesifikasiyalar
Detailed technical specifications for the AUTOOL LM120 Digital Manifold Gauge.
| Xüsusiyyət | Spesifikasiya |
|---|---|
| İstehsalçı | AUTOOL |
| Model nömrəsi | LM120 |
| Material | High-strength Engineering Plastic |
| Təzyiq Test Aralığı | 0 Kpa - 6000 Kpa |
| Təzyiq Testinin Qətiyyəti | 1 Kpa |
| Təzyiq Testinin Dəqiqliyi | +/- 0.5 %(FS) + 5dgt |
| Təzyiq Həddindən artıq yükləmə limiti | 10000 Kpa (10 Mpa; 100 bar) |
| Number of Refrigerants in Database | 89 növ |
| Standart interfeys | 1/4 düym |
| Ölçülər (U x G x Y) | 20.32 x 7.62 x 12.7 sm (8 x 3 x 5 düym) |
| Çəki | 59.53 q (2.1 unsiya) |
| Komponentlər Daxildir | 1 set of LM120 Digital Refrigeration Manifold Gauge |
| Batareyalar Tələb olunur | No (implies internal rechargeable or power source) |
| UPC | 733810026709, 733810026198 |
9. Zəmanət və Dəstək
AUTOOL is committed to providing high-quality products and customer satisfaction.
- Üç illik zəmanət: For damage caused by non-human factors, AUTOOL promises to resend parts free of charge within 3 years from the date of purchase.
- Permanent Maintenance: The product is covered by permanent maintenance support.
- Müştəri Dəstəyi: For any inquiries, technical assistance, or warranty claims, please contact AUTOOL customer support. You can expect a response within 24 hours.
