1. Introduction
The Elitech LMC-300 Electronic Refrigerant Charging Scale is a high-precision instrument designed for HVACR professionals. It offers accurate measurement of refrigerants with a maximum capacity of 220 lbs (100 kg). This manual provides detailed instructions for the proper setup, operation, and maintenance of your LMC-300 scale to ensure optimal performance and longevity.
Figure 1.1: Elitech LMC-300 Electronic Refrigerant Charging Scale, showing the scale platform, wired remote control, and charging valve.
2. Package Contents
Upon unpacking, please verify that all items listed below are present and in good condition:
- 1 x Refrigerant Scale (LMC-300)
- 1 x Charging Valve
- 1 x Wired Remote Control
- 1 x Nylon Tool Bag
- 1 x Product Quick Guide / User Manual
- 5 x AAA Alkaline Batteries (for remote control)
Figure 2.1: All components included in the Elitech LMC-300 Refrigerant Detection Tool Kit.
3. Specifications
| Feature | Specification |
|---|---|
| Model | LMC-300 |
| Maximum Capacity | 220 lbs (100 kg) |
| Accuracy | ±0.05% rdg + 10g |
| Resolution | 5g |
| Operating Temperature Range | -50°F to 104°F (-45°C to 40°C) |
| Battery Life | Up to 35 hours of continuous use |
| Display Type | Large Backlit LCD |
| Unit Conversions | Kg, Lb, Oz |
| Material | Solid, heavy-duty aluminum with rubber bumpers |
| Product Dimensions | 4.33 x 14.3 x 13 inches (approx.) |
| Item Weight | 9 pounds |
Figure 3.1: Dimensional specifications and key features of the LMC-300 system components.
4. Setup
4.1 Battery Installation
The remote control requires 5 AAA batteries. Open the battery compartment on the back of the remote and insert the batteries, ensuring correct polarity. Close the compartment securely.
4.2 Initial Power On and Zeroing
Place the scale on a stable, level surface. Connect the wired remote control to the scale. Press the 'POWER' button on the remote to turn on both the scale and the remote. The display will flash from '0000' to '9999' and then settle. Press the 'ZERO' button to tare the scale and set the display to '0.000'. This ensures accurate measurements.
Figure 4.1: Electronic Control Panel with key functions highlighted.
4.3 Connecting the Charging Valve
Before any charging or recovery operation, connect the charging valve to the scale. Then, connect the valve to the refrigerant hoses. Ensure all connections are secure to prevent leaks.
Figure 4.2: Illustration of the self-closing valve and refrigerant flow.
4.4 Setup Video Guide
For a visual guide on setting up your Elitech LMC-300 scale, please watch the official product video below:
Video 4.1: Elitech LMC-300 Electronic Refrigerant Charging Scale Overview and Setup. This video demonstrates the physical setup, battery installation, and initial power-on sequence of the scale and remote control.
5. Operating Instructions
5.1 Unit Conversion
The LMC-300 supports three units of measurement: kilograms (Kg), pounds (Lb), and ounces (Oz). To switch between units, press the 'UNIT' button on the remote control.
Figure 5.1: Remote control button layout and functions, including unit conversion.
5.2 Charging Process
- Ensure the scale is zeroed and the charging valve is correctly connected.
- Press the 'CHARGE' button on the remote control.
- Use the numeric keypad to enter the desired refrigerant charge value.
- Press the 'ENTER' button to open the valve and begin the charging process.
- The scale will automatically monitor the weight. Once the programmed charge level is reached, the valve will shut off automatically, and an alarm will sound.
- Press any button on the remote to stop the alarm.
5.3 Recovery Process
- Ensure the scale is zeroed and the charging valve is correctly connected.
- Press the 'RECOVERY' button on the remote control.
- Use the numeric keypad to enter the desired refrigerant recovery value.
- Press the 'ENTER' button to open the valve and begin the recovery process.
- The scale will automatically monitor the weight. Once the programmed recovery level is reached, the valve will shut off automatically, and an alarm will sound.
- Press any button on the remote to stop the alarm.
5.4 Repeat Function
To repeat the last charging or recovery operation with the same stored amount, simply press the 'REPEAT' button on the remote control.
5.5 Power Off
When your task is complete, press and hold the 'POWER' button for approximately 3 seconds. Both the scale and the remote will shut down.
6. Accuracy and Design Features
The LMC-300 is engineered for high precision, providing an accuracy of ±0.05% rdg + 10g. This ensures reliable and consistent measurements for critical HVACR applications.
Figure 6.1: The high-sensitivity platform ensures accurate data for precise refrigerant measurement.
Constructed with thick aluminum walls, shock-resistant rubber feet, and a protective rubber pad, the LMC-300 is built for rugged durability in demanding HVAC job sites. Anti-collision reinforcement at all four corners further enhances its resilience.
Figure 6.2: Details of the solid aviation aluminum material, non-slip rubber, and anti-collision reinforcement.
The large backlit LCD display on the remote control provides clear visibility of measurements, even in dark environments. The auto power-off feature conserves battery life, contributing to the impressive 35 hours of continuous use.
Figure 6.3: The sensitive refrigerant scale in operation, demonstrating its user-friendly design.
7. Maintenance
To ensure the longevity and accuracy of your Elitech LMC-300 scale, follow these maintenance guidelines:
- Cleaning: Wipe the scale platform and remote control with a soft, damp cloth. Do not use abrasive cleaners or immerse the units in water.
- Storage: Store the scale and its components in the provided nylon tool bag in a dry, cool place when not in use. Avoid extreme temperatures and direct sunlight.
- Battery Replacement: If the remote control does not power on or the display becomes dim, it may be time to replace the AAA batteries. Always replace all batteries at once with new ones.
- Calibration: While the scale is factory calibrated, periodic checks with known weights are recommended to verify accuracy. If recalibration is needed, refer to the troubleshooting section or contact customer support.
8. Troubleshooting
This section addresses common issues you might encounter with your Elitech LMC-300 scale.
8.1 Error Codes and Solutions
- Display shows '999999': This indicates a damaged sensor. Sensor replacement is required. Please contact Elitech customer support for assistance.
- Error Code 'E02': This means the product needs recalibration. Please contact Elitech customer support for repair assistance.
- Error Code 'E03': This indicates the product has an offset. Place the scale on a level surface. Briefly press the 'POWER' button to display 'CAL'. Keep the scale stable, then press the 'POWER' button again to remove 'CAL'. If 'E03' persists, contact Elitech customer support for repair assistance.
- Error Code 'E05' (for LMC-210/310 models with Bluetooth): This signifies a Bluetooth connection error. Please restart the device and attempt to reconnect Bluetooth.
8.2 Troubleshooting Video Guide
For visual explanations of common error codes and their solutions, please refer to the video below:
Video 8.1: Elitech Scale Error Code Explanations. This video provides details on what various error codes mean and initial steps for resolution.
9. Warranty and Support
Elitech products are manufactured to high-quality standards and are backed by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Elitech website. If you require technical assistance, repair services, or have any questions regarding your LMC-300 scale, please contact Elitech customer support. Contact information can be found on the Elitech website or in your product's quick guide.
