1. Introduction
This user manual provides comprehensive instructions for the Elitech LMG-10 Digital Manifold Gauge, LMC-100A+ Refrigerant Scale, and ILD-200 Infrared Leak Detector. This integrated system is designed for HVAC professionals to accurately measure pressure, temperature, refrigerant weight, and detect refrigerant leaks in HVAC/R systems. Please read this manual thoroughly before operation to ensure proper use and safety.
Figure 1: Complete Elitech LMG-10 Digital Manifold Gauge System including the manifold, refrigerant scale, leak detector, and hoses.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the equipment:
- Wear appropriate personal protective equipment (PPE), including safety glasses and gloves, when handling refrigerants.
- Ensure proper ventilation when working with refrigerants.
- Do not expose the devices to extreme temperatures, humidity, or corrosive environments.
- Do not attempt to disassemble or modify the equipment. Refer all servicing to qualified personnel.
- Verify that all connections are secure before applying pressure or vacuum.
- Use only the specified power sources and accessories.
- Keep the equipment away from children and unauthorized personnel.
3. Package Contents
Verify that all items are present in the package:
- Elitech LMG-10 Digital Manifold Gauge
- Elitech LMC-100A+ Refrigerant Scale
- Elitech ILD-200 Infrared Leak Detector
- Charging Hoses (Red, Yellow, Blue)
- Temperature Clamps (2)
- User Manual (this document)
- Carrying Case (for LMG-10 and accessories)
Figure 2: Elitech LMG-10 Digital Manifold Gauge, temperature clamps, and protective carrying case.
4. Product Overview
4.1 Elitech LMG-10 Digital Manifold Gauge
The LMG-10 is a robust digital manifold gauge designed for precise pressure and temperature measurements in HVAC/R systems. It supports 88 types of refrigerants and automatically calculates superheat and subcooling.
- Display: Large LCD for clear readings.
- Refrigerant Support: Pre-programmed with 88 common refrigerants.
- Units: Supports psi, kg/cm², kPa, MPa, bar for pressure; °F/°C for temperature.
- Features: Temperature compensation, auto-off function.
Figure 3: Key features of the Elitech LMG-10 Digital Manifold Gauge, highlighting its capabilities.
4.2 Elitech LMC-100A+ Refrigerant Scale
The LMC-100A+ is a high-capacity refrigerant charging scale, essential for accurate refrigerant charging and recovery. It offers high precision and multiple unit options.
- Capacity: Up to 220 lbs (100 kg).
- Accuracy: ±0.05% readings +10g.
- Units: Kg, Lb, Oz.
- Features: Long battery life (up to 40 hours), auto shut-off after 10 minutes of inactivity.
Figure 4: The Elitech LMC-100A+ Refrigerant Scale, emphasizing its extended battery life and automatic power-saving function.
Figure 5: The Elitech LMC-100A+ Refrigerant Scale actively measuring refrigerant weight, showing a clear digital display.
4.3 Elitech ILD-200 Infrared Leak Detector
The ILD-200 is an advanced infrared refrigerant leak detector offering superior sensitivity and faster response times compared to traditional heated diode detectors.
- Detection Method: Infrared sensor technology.
- Sensitivity: Max 0.1 oz/yr.
- Response Time: Immediate.
- Standards: Meets EN14624, SAE-162, SAE-2791, and SAE-2913 standards.
- Display: 2.8" large screen with peak display.
Figure 6: Elitech ILD-200 Infrared Leak Detector, detailing its physical dimensions and key technical specifications.
Figure 7: Close-up of the Elitech ILD-200's large display, showing its sensitivity indicator and peak leak detection feature.
4.4 Charging Hoses
The included charging hoses are designed for high-pressure refrigerant applications, ensuring safe and efficient transfer.
- Working Pressure: 800 PSI.
- Burst Pressure: 4000 PSI.
- Colors: Red, Yellow, Blue for easy identification of high-side, low-side, and service ports.
Figure 8: The set of red, yellow, and blue charging hoses, indicating their working and burst pressure capabilities.
5. Setup
5.1 Initial Setup of LMG-10 Digital Manifold Gauge
- Battery Installation: Open the battery compartment on the back of the LMG-10 and insert the required batteries (refer to specifications for type).
- Power On: Press the power button to turn on the device.
- Unit Selection: Use the "MODE" button to cycle through pressure and temperature units. Use the arrow buttons to select desired units (e.g., psi, °F).
- Refrigerant Selection: Press the refrigerant selection button (if available, or cycle through modes) to choose the appropriate refrigerant type for your system.
- Zeroing Pressure: With all hoses disconnected and valves closed, press the "ZERO" button to zero the pressure readings.
5.2 Initial Setup of LMC-100A+ Refrigerant Scale
- Battery Installation: Install batteries into the scale's remote display unit.
- Placement: Place the scale on a flat, stable surface.
- Power On: Press the "POWER" button on the remote display.
- Unit Selection: Press the "UNIT" button to select the desired weight unit (Kg, Lb, or Oz).
- Zeroing Scale: Ensure nothing is on the scale platform, then press the "Z/T" (Zero/Tare) button to zero the reading.
5.3 Initial Setup of ILD-200 Infrared Leak Detector
- Battery Installation: Open the battery compartment and insert the specified battery (e.g., 3.7V 3000mAh).
- Power On: Press and hold the power button until the device turns on. Allow a brief warm-up period.
- Sensitivity Adjustment: Use the "SENS" button to cycle through sensitivity levels (e.g., H for High, M for Medium, L for Low) based on the expected leak size.
6. Operating Instructions
6.1 Using the LMG-10 Digital Manifold Gauge
- Connect Hoses:
- Connect the blue hose to the low-side service port of the HVAC system and the blue port on the LMG-10.
- Connect the red hose to the high-side service port of the HVAC system and the red port on the LMG-10.
- Connect the yellow (service) hose to the center port of the LMG-10. This hose will be used for vacuum pump or refrigerant tank connections.
- Attach Temperature Clamps: Securely attach the temperature clamps to the suction line (low-side) and liquid line (high-side) of the system to measure pipe temperatures for superheat/subcooling calculations.
- Readings: Once connected, the LMG-10 will display real-time pressure and temperature readings. Superheat and subcooling values will be calculated automatically based on the selected refrigerant.
- Vacuuming:
- Connect the yellow hose to a vacuum pump.
- Open both high and low-side valves on the LMG-10.
- Start the vacuum pump and monitor the vacuum reading on the LMG-10.
- Once the desired vacuum level is reached, close both valves on the LMG-10 and turn off the vacuum pump.
- Charging/Recovery:
- Connect the yellow hose to the refrigerant tank (for charging) or recovery machine (for recovery).
- Use the LMC-100A+ scale to monitor the refrigerant weight.
- Open the appropriate valve(s) on the LMG-10 to allow refrigerant flow.
- Monitor pressure and temperature readings during the process.
6.2 Using the LMC-100A+ Refrigerant Scale
- Place Tank: Place the refrigerant tank securely on the center of the scale platform.
- Tare Weight: Press the "Z/T" button to tare the weight of the tank, setting the display to zero. This allows you to measure only the amount of refrigerant added or removed.
- Monitor Weight: As refrigerant is charged or recovered, the display will show the net change in weight.
- Hold Function: Some models may have a "HOLD" button to freeze the current reading.
6.3 Using the ILD-200 Infrared Leak Detector
- Power On and Warm-up: Turn on the ILD-200 and allow it to warm up as indicated by the device (usually a few seconds).
- Select Sensitivity: Choose the appropriate sensitivity (H, M, L) based on the suspected leak size and environment. Start with high sensitivity for general scanning.
- Scan Area: Slowly move the probe tip around suspected leak points (e.g., fittings, valves, coils) at a rate of approximately 1-2 inches per second.
- Detecting Leaks: When a leak is detected, the device will emit an audible alarm and/or visual indication (e.g., LED bar graph, display reading). The alarm frequency or intensity typically increases with the concentration of refrigerant.
- Pinpointing Leaks: Once a leak is indicated, move the probe away and then slowly approach the area again to pinpoint the exact source. Reduce sensitivity if the alarm is constant and overwhelming.
- Reset Function: Use the "RESET" button to clear the current reading and re-zero the sensor in a clean air environment.
- Mute Function: Use the "MUTE" button to silence the audible alarm if desired.
7. Maintenance
7.1 General Care
- Keep all components clean and free from dirt, dust, and moisture.
- Wipe surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Store the equipment in its protective carrying case when not in use.
7.2 Battery Replacement
- LMG-10: Replace batteries when the low battery indicator appears on the display. Refer to the battery compartment for specific battery type (e.g., AA, AAA).
- LMC-100A+: Replace batteries in the remote display unit when the battery indicator is low.
- ILD-200: Replace the internal rechargeable battery or standard batteries as needed. Ensure proper polarity.
7.3 Sensor Maintenance (ILD-200)
The infrared sensor in the ILD-200 is generally maintenance-free. However, avoid exposing the sensor tip to excessive dirt or oil. If performance degrades, contact Elitech support.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| LMG-10 does not power on. | Dead or incorrectly installed batteries. | Check battery polarity; replace batteries. |
| Inaccurate pressure readings on LMG-10. | Gauge not zeroed; sensor contamination; faulty connection. | Zero the gauge before use; ensure clean connections; check for leaks in hoses. |
| LMC-100A+ scale shows "Err" or unstable readings. | Uneven surface; overloaded; battery low; interference. | Place on a flat, stable surface; ensure weight is within capacity; replace batteries; move away from strong electromagnetic fields. |
| ILD-200 constantly alarms or gives false positives. | High background refrigerant concentration; sensor contaminated; sensitivity too high. | Move to a clean air environment and reset; clean probe tip; reduce sensitivity. |
| ILD-200 does not detect leaks. | Low sensitivity; sensor failure; battery low. | Increase sensitivity; replace battery; contact support if sensor is suspected faulty. |
9. Specifications
| Component | Specification | Value |
|---|---|---|
| LMG-10 Digital Manifold Gauge | Supported Refrigerants | 88 types |
| Pressure Units | psi, kg/cm², kPa, MPa, bar | |
| Temperature Units | °F/°C | |
| Battery Life | Up to 200 hours | |
| Features | Superheat/Subcooling auto-calc, Temp Compensation, Auto-off | |
| LMC-100A+ Refrigerant Scale | Capacity | 220 lbs (100 kg) |
| Accuracy | ±0.05% readings +10g | |
| Weight Units | Kg, Lb, Oz | |
| Battery Life | Up to 40 hours | |
| ILD-200 Infrared Leak Detector | Max Sensitivity | 0.1 oz/yr |
| Response Time | Immediate | |
| Battery | 3.7V 3000mAh | |
| Standards Met | EN14624, SAE-162, SAE-2791, SAE-2913 | |
| Display | 2.8" Large Screen Peak Display | |
| Charging Hoses | Working Pressure | 800 PSI |
| Burst Pressure | 4000 PSI | |
| General Product Dimensions | Product Dimensions | 11 x 8 x 14 inches |
| Item Weight | 1.1 Pounds | |
| Material | Nylon, Polypropylene, Rubber |
10. Warranty and Support
Elitech provides dedicated customer service and technical support for its products. For any inquiries, technical assistance, or warranty claims, please contact Elitech's local team.
- Customer Service: Available 24/7.
- Technical Support: Available for product operation and troubleshooting.
- Warranty Information: Refer to the product packaging or Elitech's official website for detailed warranty terms and conditions.
- Contact Information: Visit the official Elitech website or refer to the contact details provided with your product for the most up-to-date support channels.
