AUTOOL LM110+ Digital Refrigeration Manifold Gauge User Manual

1. ആമുഖവും അവസാനവുംview

The AUTOOL LM110+ Digital Refrigeration Manifold Gauge is an advanced instrument designed for the installation, testing, and maintenance of refrigeration equipment, including air conditioners and cold storage units. This device offers digital readings, multi-unit switching, and a built-in database of 89 refrigerants for accurate measurements.

Figure 1: AUTOOL LM110+ Digital Refrigeration Manifold Gauge main unit. This image shows the front view of the digital manifold gauge, highlighting its display and control buttons.

Key functionalities include refrigerant filling and pressure inspection, vacuum testing, and pressure leakage testing. Its robust design features high-strength engineering plastics and flexible non-slip silicone for durability and comfortable handling.

2. സവിശേഷതകൾ

• ഡിജിറ്റൽ ഡിസ്പ്ലേ: Large LCD display with backlight for clear readings in various lighting conditions.
• കരുത്തുറ്റ നിർമ്മാണം: Made from high-strength engineering plastics and flexible non-slip silicone for durability. Features heavy-duty valve switches and 1/4-inch imports.
• മൾട്ടി-ഫങ്ഷണൽ: Supports refrigerant filling, pressure inspection, vacuum testing, and pressure leakage testing with time record.
• നൂതന സാങ്കേതികവിദ്യ: Incorporates a 32-bit digital processing unit and high-precision data acquisition unit for efficient and stable performance.
• Refrigerant Database: Built-in database of 89 refrigerants (NIST) for accurate pressure condensation and evaporation temperature readings.
• തത്സമയ നിരീക്ഷണം: Detects and displays original pressure, current pressure, leakage pressure, and test time during leak tests. Shows current vacuum pressure and vacuum percentage during vacuum operations.
• Observation Window: A visual window allows observation of the refrigerant filling status.

3 സ്പെസിഫിക്കേഷനുകൾ

Figure 2: Detailed specifications of the AUTOOL LM110+ Digital Refrigeration Manifold Gauge. This image provides a visual summary of the technical data.

4. സജ്ജീകരണം

Before using the AUTOOL LM110+ Digital Refrigeration Manifold Gauge, ensure proper setup:

1. ബാറ്ററി ഇൻസ്റ്റാളേഷൻ: Open the battery compartment and insert three 1.5V AA/LR6 batteries, ensuring correct polarity.
2. ഹോസ് കണക്ഷൻ: Connect the test pipes (hoses) to the appropriate ports on the manifold gauge and to the refrigeration system being serviced. Ensure all connections are secure to prevent leaks.
3. പവർ ഓൺ: Press the power button to turn on the device. The LCD display should illuminate.
4. റഫ്രിജറന്റ് തിരഞ്ഞെടുക്കൽ: Use the device's controls to select the specific refrigerant type (e.g., R134a, R410a) relevant to your application from the built-in database.

ചിത്രം 3: ഉദാamples of applicable scenes for the AUTOOL LM110+ Digital Refrigeration Manifold Gauge, including automobile air conditioning, household air conditioning, cold storage, and general refrigeration equipment.

5. പ്രവർത്തന നിർദ്ദേശങ്ങൾ

5.1 Refrigerant Filling and Pressure Inspection

This function is used for refrigeration system repair, maintenance, refrigerant filling, and operation inspection. The built-in refrigerant database provides pressure condensation and evaporation temperature readings.

1. Connect the gauge to the refrigeration system according to standard procedures for refrigerant charging.
2. Select the correct refrigerant type on the device.
3. Monitor the pressure readings and corresponding condensation/evaporation temperatures on the display during the filling process.

Figure 4: Display showing refrigerant filling and testing. This image illustrates how the gauge displays refrigerant type, condensation/evaporation temperature, measuring unit, and pressure during operation.

5.2 Vacuum Operation and Testing

The vacuum operation mode tests the vacuum pressure value and calculates the vacuum degree of the refrigeration system.

1. Connect the gauge to the system for vacuuming.
2. Activate the vacuum test function on the device.
3. Observe the real-time display of current vacuum pressure and the percentage of vacuum level.

Figure 5: Display showing vacuuming operation and testing. This image demonstrates the gauge's ability to show vacuum degree, measuring unit, and pressure during vacuum tests.

5.3 പ്രഷർ ലീക്ക് ടെസ്റ്റ്

The pressure leak test function is used to inspect how much pressure changes over a specific time after a refrigeration system has been filled with refrigerant or vacuumed.

1. After charging or vacuuming, initiate the pressure leak test.
2. The device will display the original pressure, current pressure, leakage pressure (difference), and the elapsed test time.
3. Monitor these values to determine if there is a leak in the system.

Figure 6: Display showing leak testing of pressure. This image illustrates how the gauge displays leak pressure, measuring unit, measuring pressure, original pressure, and testing time.

5.4 യൂണിറ്റ് സ്വിച്ചിംഗ്

The LM110+ supports various pressure and temperature unit displays for user convenience.

• മർദ്ദം യൂണിറ്റുകൾ: KPa, MPa, Bar, PSI, inHg.
• താപനില യൂണിറ്റുകൾ: °C, °F.

Refer to the device's buttons for switching between units as needed during operation.

Figure 7: Display showing support for various unit switching. This image highlights the multiple pressure units (KPa, MPa, Bar, PSI, inHg) and temperature units (°C, °F) available on the gauge.

5.5 Refrigerant Observation Window

The manifold gauge includes a visual window to observe the refrigerant filling status, allowing for better control and monitoring during charging.

Figure 8: Close-up of the refrigerant observation window. This image shows the transparent window on the gauge, allowing users to visually inspect the refrigerant flow and status.

6. പരിപാലനം

To ensure the longevity and accuracy of your AUTOOL LM110+ Digital Refrigeration Manifold Gauge, follow these maintenance guidelines:

• വൃത്തിയാക്കൽ: മൃദുവായതും ഉണങ്ങിയതുമായ തുണി ഉപയോഗിച്ച് ഉപകരണം തുടയ്ക്കുക. അബ്രസീവ് ക്ലീനറുകളോ ലായകങ്ങളോ ഉപയോഗിക്കരുത്.
• സംഭരണം: Store the gauge in a clean, dry place away from extreme temperatures and direct sunlight. Use the provided package box for protection when not in use.
• ബാറ്ററി മാറ്റിസ്ഥാപിക്കൽ: Replace batteries promptly when the low battery indicator appears to prevent data loss or device malfunction. Remove batteries if the device will not be used for an extended period.
• ഹോസ് പരിശോധന: Regularly inspect test pipes for cracks, wear, or damage. Replace damaged hoses immediately to ensure accurate readings and prevent refrigerant leaks.
• കാലിബ്രേഷൻ: While the device is factory calibrated, periodic checks against known standards are recommended for professional use to maintain accuracy.

7. പ്രശ്‌നപരിഹാരം

If you encounter issues with your AUTOOL LM110+ Digital Refrigeration Manifold Gauge, consider the following common troubleshooting steps:

• ഉപകരണം പവർ ചെയ്യുന്നില്ല:
  • ബാറ്ററികൾ ശരിയായി ഇൻസ്റ്റാൾ ചെയ്തിട്ടുണ്ടോ എന്നും ആവശ്യത്തിന് ചാർജ് ഉണ്ടോ എന്നും പരിശോധിക്കുക. ആവശ്യമെങ്കിൽ പുതിയ ബാറ്ററികൾ ഉപയോഗിച്ച് മാറ്റിസ്ഥാപിക്കുക.
  • ബാറ്ററി കമ്പാർട്ട്മെൻ്റ് സുരക്ഷിതമായി അടച്ചിട്ടുണ്ടെന്ന് ഉറപ്പാക്കുക.
• കൃത്യമല്ലാത്ത വായനകൾ:
  • Verify that the correct refrigerant type is selected on the device.
  • Check all hose connections for leaks. Even small leaks can affect pressure readings.
  • Ensure the system is properly purged of air before taking measurements.
  • If persistent, consider professional calibration.
• ഡിസ്പ്ലേ പ്രശ്നങ്ങൾ:
  • If the backlight is not working, check battery levels.
  • If the display is frozen or showing erratic characters, try turning the device off and on again.
• Leak Test Fails/Indicates Leak:
  • Double-check all connections on the refrigeration system and the gauge itself.
  • Perform a visual inspection for obvious signs of refrigerant leakage (e.g., oil residue).
  • If a leak is confirmed, locate and repair it before retesting.

ഈ ഘട്ടങ്ങളിലൂടെ പരിഹരിക്കപ്പെടാത്ത പ്രശ്നങ്ങൾക്ക്, ദയവായി ഉപഭോക്തൃ പിന്തുണയുമായി ബന്ധപ്പെടുക.

8. വാറൻ്റിയും പിന്തുണയും

AUTOOL provides a warranty for the LM110+ Digital Refrigeration Manifold Gauge. For damage caused by non-human factors, AUTOOL promises to resend parts for free within 3 years from the date of purchase.

For any technical assistance, warranty claims, or product inquiries, please contact AUTOOL customer support. We aim to respond to all inquiries within 24 hours.

ബന്ധപ്പെടാനുള്ള വിവരങ്ങൾ: Refer to the product packaging or the official AUTOOL webഏറ്റവും പുതിയ കോൺടാക്റ്റ് വിശദാംശങ്ങൾക്കായി സൈറ്റ്.