1. Introduction
The AUTOOL LM130 is a digital intelligent refrigerant meter designed for use in automotive air conditioning maintenance. This device accurately measures pressure values of refrigerants at various stages within the system, providing essential data for equipment operation and maintenance personnel. It ensures a clear understanding of the air conditioning system's operational status, contributing to its proper functioning.
Key features include a high-precision sensor, multiple operating modes (refrigeration, evacuation, pressure leak test), and a clear LCD HD display for easy readability in various lighting conditions.
2. Safety Information
- Always wear appropriate personal protective equipment (PPE), including safety glasses and gloves, when working with refrigerants.
- Ensure proper ventilation in the work area to prevent the accumulation of refrigerant vapors.
- Do not expose the device to extreme temperatures, direct sunlight, or corrosive environments.
- Handle refrigerant cylinders with care and follow all manufacturer guidelines for their use and storage.
- Disconnect the device from the system before performing any maintenance or cleaning.
- Keep the device away from children and unauthorized personnel.
3. Package Contents
Verify that all items are present in the package:
- AUTOOL LM130 Smart Digital Manifold Kit Unit
- Temperature Probe (Clamp Type)
- User Manual
- Storage Box
Figure 1: Package Contents of the AUTOOL LM130
4. Device Overview
The AUTOOL LM130 features a robust design with intuitive controls and a clear display. Familiarize yourself with the components and their functions:
Figure 2: AUTOOL LM130 Components and Controls
| Label | Component | Function |
|---|---|---|
| A | Multi-Function interface | Main display area for readings and settings. |
| B | Display Screen | High-definition LCD for clear data presentation. |
| C | Play/Pause Button | Press to start/pause measurement / restart measurement; In setting mode, press to scroll upward. |
| D | Sound/Scroll Down Button | Press to control the sound on/off; In setting mode, press to scroll downward. |
| E | Settings Button | Press to open the settings menu (refrigerant selection, temperature unit selection, pressure unit selection, vacuum unit selection, auto power off selection). |
| F | Measurement Mode Button | Press to select the measurement mode; long press to zero the pressure. |
| G | Power/Backlight Button | Press to power on the unit; long press for 2s to power off; press to control backlight. |
| H | Refilling hose brass connector | Connection point for refrigerant hoses. |
| I | Observation sight window | Allows visual inspection of refrigerant flow. |
| J | Refilling hose joint evacuation port | Port for evacuation hose connection. |
| K | Rotary knob | Used for controlling valves or settings. |
| M | Foldable Hook | For hanging the unit during use. |
Figure 3: Unique Design Details of the AUTOOL LM130
5. Specifications
The AUTOOL LM130 is engineered with the following technical specifications:
Figure 4: AUTOOL LM130 Technical Specifications
| Parameter | Value |
|---|---|
| Pressure Unit | psi, Bar, Mpa |
| Temperature Unit | °C, °F |
| Vacuum Unit | Torr, mbar |
| Pressure Range | 0~870psi, 0~60bar(rel), 0~6Mpa |
| Temperature Range | -55~125°C, -67~257°F |
| Vacuum Range (Rel) | -14.7-0psi, -1~0bar |
| Pressure Resolution | 0.1psi, 0.01bar, 0.005MPa |
| Temperature Resolution | 0.1°C, 0.1°F |
| Pressure Accuracy | Within ±0.5% of the full range |
| Temperature Accuracy | ±0.5°C (±1 digit), ±0.9°F (±1 digit) |
| Vacuum Accuracy | Within ±0.5% of the full range |
| Overload | 942.5psi, 65bar, 6.5Mpa |
| Refrigerants Available | R12, R410A, R407C, R404A, R22, R134A, R502 |
| Operating Voltage | 6V (4 x 1.5V batteries) |
6. Setup and Initial Use
Before operating the AUTOOL LM130, ensure it is properly set up:
- Battery Installation: Open the battery compartment and insert four 1.5V batteries, ensuring correct polarity.
- Power On: Press the power button (G) to turn on the unit. The LCD HD display (B) will illuminate.
- Unit Selection: Press the settings button (E) to enter the settings menu. Use the scroll buttons (C, D) to navigate and select your preferred pressure, temperature, and vacuum units.
- Refrigerant Type Selection: In the settings menu, select the appropriate refrigerant type (e.g., R134A, R22) for your application using the rotary knob (K) or scroll buttons.
- Connect Hoses: Connect the appropriate refrigerant hoses to the refilling hose brass connectors (H) and the refilling hose joint evacuation port (J) as required for your specific task.
- Attach Temperature Probe: If temperature measurement is needed, attach the clamp temperature probe to the pipe.
Watch this video for a quick overview of the device in action:
Video 1: AUTOOL LM130 Smart Digital Manifold Kit Demonstration
7. Operating Modes
The AUTOOL LM130 offers several operating modes for comprehensive system analysis:
7.1 Refrigeration Mode
This mode provides real-time measurement of pressure and temperature data within refrigeration systems. It displays key parameters to help assess system performance.
Figure 5: Refrigeration Mode Display
| Display Abbreviation | Description |
|---|---|
| EV | Evaporation Temperature |
| CO | Condensation Temperature |
| T | Actual Pipe Temperature |
| Current P | Current Pressure |
7.2 Evacuation Mode
This mode is used to measure pressure during the evacuation process of a refrigeration system and assess the current vacuum state. It helps ensure proper removal of non-condensable gases and moisture.
Figure 6: Evacuation Mode Display
| Display Abbreviation | Description |
|---|---|
| Evacuation | Evacuation Mode |
| Ev | H2O Evaporation Temp. |
| Tamb | Ambient Temp. |
| Current P | Current Pressure |
| ΔT | Delta T |
| TIME | Measurement Duration |
| 000000 | Vacuum Not Achieved Within Range |
| RUAT | Activate External Vacuum Probe |
7.3 Pressure Leak Test
This mode is used to test the leak tightness and sealing integrity of the refrigeration system. It monitors pressure changes over time to detect potential leaks.
Figure 7: Pressure Leak Test Display
| Display Abbreviation | Description |
|---|---|
| Pressure Leak Test | Pressure Leak Test Mode |
| StartP | Start Pressure |
| Current P | Current Pressure |
| ΔP | Delta Pressure |
| TIME | Measurement Duration |
8. User Tips
- Always ensure the correct refrigerant type is selected in the settings before taking measurements to avoid inaccurate readings.
- For precise temperature readings, ensure the clamp temperature probe is securely attached to the pipe and has good contact.
- Regularly check battery levels, especially before critical measurements, to prevent unexpected power loss.
- Utilize the foldable hook to hang the unit securely, keeping it stable and visible during operation.
- When performing a pressure leak test, allow sufficient time for the system to stabilize before starting the measurement for reliable results.
9. Maintenance
- Cleaning: Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the unit in its original packaging or a protective case in a dry, cool place when not in use.
- Battery Replacement: Replace batteries when the low battery indicator appears on the display. Remove batteries if the device will not be used for an extended period.
- Sensor Care: Keep the pressure sensor ports clean and free from debris.
10. Troubleshooting
- No Display/Unit Not Powering On: Check battery installation and ensure batteries are not depleted. Replace if necessary.
- Inaccurate Readings: Verify that the correct refrigerant type and units are selected in the settings. Ensure proper connection of hoses and temperature probe. Calibrate the unit if necessary (refer to the long press function of the measurement mode button to zero pressure).
- Buttons Unresponsive: Ensure the unit is not in a locked mode. Try powering off and on again.
- Leak Test Fails: Recheck all connections for tightness. Ensure the system is properly sealed before initiating the test.
11. Warranty and Support
The AUTOOL LM130 Smart Digital Manifold Kit comes with a 3-year warranty from AUTOOL authorized stores. This warranty covers manufacturing defects and ensures product quality. For any technical assistance, troubleshooting, or warranty claims, please contact AUTOOL customer support through their official channels.
Figure 8: AUTOOL 3-Year Warranty
