1. Introduction
The Elitech VGW-Mini is a compact and versatile wireless digital vacuum gauge designed for HVAC and refrigeration systems. It provides accurate vacuum measurements, features app connectivity for monitoring and data management, and includes an adaptor for convenient use. This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your device.
Image 1: Elitech VGW-Mini Wireless Digital Vacuum Gauge with included adapter.
2. Setup
2.1 Unboxing and Initial Inspection
Carefully remove all components from the packaging. Verify that the following items are present:
- Elitech VGW-Mini Digital Vacuum Gauge
- Adaptor (1/4" SAE)
- USB Charging Cable (not explicitly listed but implied by 'rechargeable')
- User Manual
2.2 Battery Installation and Charging
The VGW-Mini requires 1 Lithium Ion battery (included). Ensure the battery is properly installed. For charging, connect the device using a standard USB cable. The device is rechargeable.
Image 2: Elitech VGW-Mini connected via USB for charging, illustrating its compact dimensions.
2.3 Connecting the Adaptor
Attach the provided 1/4" SAE adaptor to the vacuum gauge. Ensure it is securely fastened to prevent leaks during operation.
2.4 Elitech Tools App Installation
Download the Elitech Tools App from your device's app store (iOS and Android compatible). This integrated app allows for remote monitoring, data recording, and management of Elitech tools.
Image 3: The Elitech Tools App interface demonstrating monitoring capabilities and data export functions.
3. Operating Instructions
3.1 Power On/Off and Display
Press the power button to turn the device on or off. The large, full-view LCD screen provides a continual digital readout of the evacuation process. The device supports multiple units of measurement.
Image 4: Elitech VGW-Mini showcasing its key features including app support, OTA upgrades, offline recording, and a large display.
3.2 Vacuum Measurement
Connect the VGW-Mini to the HVAC or refrigeration system using the 1/4" SAE adaptor. The gauge measures vacuum from 19,000 Microns (atmosphere) down to 0 Micron with an accuracy of ±10% or ±10 Micron.
3.3 H2O Status Judgment
The vacuum meter automatically assesses the physical state of H2O by comparing the ambient temperature with the water saturation temperature corresponding to the system's vacuum level.
Image 5: The VGW-Mini's display indicating H2O status judgment based on temperature and vacuum readings.
3.4 App Connectivity and Data Management
Pair the VGW-Mini with the Elitech Tools App via Bluetooth. The app allows you to:
- Monitor real-time vacuum readings.
- Set target values and receive notifications when readings exceed them.
- Record data offline (up to 5460 points) and export it in Excel and PDF formats.
- Manage other Elitech tools from a single interface.
Image 6: The Elitech VGW-Mini connected to the mobile app, displaying a vacuum graph and detailed data.
4. Maintenance
4.1 Sensor Cleaning
Regular cleaning of the sensor is crucial for maintaining accurate readings. Oil or contaminants can impact accuracy. Refer to the manufacturer's guidelines for specific cleaning procedures. Generally, this involves carefully removing any debris and cleaning with an appropriate solvent like denatured alcohol, ensuring the sensor is completely dry before reassembly.
4.2 Oil Proof Film
The product includes an oil proof film inside its head. If directly connecting to a vacuum pump, this film may cause a delayed numerical display. It is suggested to remove the oil film when connecting to the vacuum pump and reinstall it when connecting to the system to prevent oil contamination.
4.3 Battery Care
To prolong battery life, charge the device regularly and avoid fully discharging it. Store the device in a cool, dry place when not in use.
5. Troubleshooting
5.1 Delayed Numerical Display
If you experience a delayed numerical display when connected directly to a vacuum pump, consider temporarily removing the internal oil proof film as described in Section 4.2. Reinstall the film when connecting to the system.
5.2 Inaccurate Readings
Inaccurate readings can often be attributed to a contaminated sensor. Perform a thorough sensor cleaning as outlined in Section 4.1. Ensure all connections are tight and leak-free.
5.3 App Connectivity Issues
Ensure Bluetooth is enabled on your mobile device and the VGW-Mini is within range. Restart both the device and the app if connection problems persist. Verify that the Elitech Tools App is updated to the latest version.
6. Specifications
Image 7: Detailed technical specifications and physical attributes of the Elitech VGW-Mini.
| Feature | Specification |
|---|---|
| Manufacturer | Elitech |
| Part Number | VGW-mini+ad |
| Item Weight | 209 g (0.44 lb) |
| Product Dimensions | 12.45 x 3.56 x 2.79 cm (4.9 x 1.4 x 1.1 inches) |
| Batteries | 1 Lithium Ion battery (included) |
| Material | Plastic |
| Measurement Accuracy | ±10% or ±10 Micron |
| Measurement Range | 0-19000 Microns |
| Interface | 1/4" SAE |
| Resolution | 0-400 Micron: 1 Micron 400-3000 Micron: 10 Micron 3000-10000 Micron: 100 Micron 10000-19000 Micron: 250 Micron |
7. Warranty and Support
For warranty information and technical support, please refer to the official Elitech website or contact Elitech customer service directly. The Elitech Tools App may also provide access to support resources and firmware updates (OTA Upgrade).
