1. Introduction
The ELEGOO PHECDA is a high-precision laser engraver and cutter designed for a wide range of creative and industrial applications. Featuring a powerful 20W output laser, it offers exceptional performance for both engraving intricate details and cutting various materials. With a generous 400mm x 400mm engraving area and compatibility with popular software like LightBurn and LaserGRBL, the PHECDA provides flexibility and precision for your projects. This manual provides essential information for safe operation, setup, maintenance, and troubleshooting.

2. Safety Information
Your safety is paramount when operating laser equipment. Please read and adhere to all safety warnings and instructions.
- Eye Protection: Always wear the provided safety goggles (Figure 2) during operation to protect your eyes from harmful laser radiation. The translucent magnetic shading plate also helps shield your eyes from UV light.
- Fire Safety: The machine is equipped with a built-in flame monitor that will immediately stop operation and emit an alarm if flames are detected. However, always supervise the machine during operation and have fire extinguishing equipment readily available.
- Movement Protection: The PHECDA features active position protection. If the machine is accidentally moved, tilted, or flipped during operation, it will automatically pause and trigger an alarm to prevent unintended laser firing.
- Ventilation: Ensure adequate ventilation in your workspace. The integrated smoke exhaust filter and dual cooling fans help manage fumes and dust, but proper room ventilation is still crucial.
- Material Safety: Only engrave or cut materials suitable for laser processing. Avoid materials that produce toxic fumes or are highly flammable.
- Children and Pets: Keep children and pets away from the operating area.


3. Package Contents
The ELEGOO PHECDA 20W Basic package includes the following items:
- ELEGOO PHECDA Laser Engraver (20W) x 1
- Safety Goggles x 1
- Adjustable Risers x 2 pairs
- Power Adapter x 1
- USB Cable x 1
- Wrench Tools (various sizes)
- Card Reader x 1
- TF Card x 1
- Engraving Material Samples (e.g., wood, metal cards)
- Screws: (CM4*6) 16pcs, (KM4*8) 8pcs, (PM3*6) 7pcs

4. Setup Instructions
4.1 Assembly
- Carefully unpack all components from the box.
- Attach the adjustable risers to the base of the engraver if needed for increased height.
- Ensure all screws are securely fastened according to the assembly diagram (refer to the quick start guide for detailed steps).
4.2 Software Installation & Connectivity
The ELEGOO PHECDA supports LightBurn and LaserGRBL software. You can connect the machine via:
- USB Cable: Connect the engraver directly to your computer.
- TF Card: Load your engraving files onto the provided TF card and insert it into the machine.
- Mobile App (Wi-Fi): Download the official ELEGOO app for remote Wi-Fi operation and custom engraving. Ensure your phone is connected to the machine's Wi-Fi network.


4.3 Focal Distance Adjustment
The laser head features a focal positioning bar for simple and accurate focal distance adjustment. Follow the instructions in your quick start guide to set the correct focal length for your material.
5. Operating Instructions
5.1 Preparing Your Material
Place your material securely within the 400mm x 400mm engraving area. Ensure it is flat and properly positioned. The height-adjustable laser head and risers allow you to work with objects of varying heights.


5.2 Creating and Loading Designs
Create your designs using compatible software such as LightBurn or LaserGRBL. The PHECDA supports various file formats including SVG, DXF, JPG, JPEG, PNG, BMP, and TIF. Load your design file into the software or onto the TF card for processing.
5.3 Setting Parameters
Adjust the laser power and speed settings based on your material and desired outcome. The 20W output power and 0.07mm*0.13mm focal spot allow for high precision. You can modify these parameters in real-time during the engraving process, including marking the perimeter for accurate adjustments.


5.4 Starting Operation
Once your material is in place, parameters are set, and safety measures are observed, initiate the engraving or cutting process through your chosen software or the machine's interface.
5.5 Monitoring Progress
The translucent magnetic shading plate allows you to observe the laser's engraving track while providing eye protection. Always monitor the process for any anomalies.
6. Maintenance
6.1 Smoke Filtration System
The smoke exhaust filter effectively absorbs dust and fumes. The filter cartridge has a detachable cover for easy removal and replacement. Regularly check and replace the filter as needed to maintain optimal performance and air quality.


6.2 Cooling Fans
The dual cooling fans on the laser head operate for one minute after engraving to prolong their service life, reduce noise, and save power. Keep the fan vents clear of debris.
6.3 Laser Head
The unique laser head design includes a detachable window mirror. Regularly inspect and clean the mirror to prevent accuracy loss due to damage or accumulation of debris. Refer to the detailed cleaning instructions in the full manual.

6.4 Movement System
The machine features an aluminum alloy frame, aerospace-grade POM V-wheels, and a high-tension synchronous belt for stable and quiet movement. Periodically check these components for wear and tear and ensure they are free from dust and debris.

7. Troubleshooting
7.1 Common Issues
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine stops and beeps | Flame detected by sensor or machine moved/tilted. | Check for flames immediately. If none, ensure machine is stable and not accidentally bumped. Reset and restart. |
| Poor engraving/cutting quality | Incorrect focal distance, wrong power/speed settings, dirty lens/mirror, unsuitable material. | Adjust focal distance. Calibrate power/speed settings for the material. Clean laser lens/mirror. Ensure material is compatible. |
| Software connection issues | Loose USB cable, incorrect Wi-Fi connection, outdated drivers. | Check USB cable connection. Verify Wi-Fi connection to the machine. Update software and drivers. |
| Excessive smoke/fumes | Clogged filter, inadequate ventilation. | Replace filter cartridge. Improve room ventilation. |
8. Specifications
| Feature | Specification |
|---|---|
| Laser Output Power | 20W |
| Focal Spot (20W) | 0.07mm x 0.13mm |
| Engraving Speed | Up to 25,000 mm/min |
| Engraving Area | 400mm x 400mm (15.75 x 15.75 inches) |
| Cutting Capacity (20W) | Up to 14mm basswood boards |
| Connectivity | USB Cable, TF Card, Wi-Fi (Mobile App) |
| Compatible Software | LightBurn, LaserGRBL |
| Supported File Formats | SVG, DXF, JPG, JPEG, PNG, BMP, TIF |
| Frame Structure | Aluminum Alloy |
| Movement System | Aerospace-grade POM V-wheels, High-tension synchronous belt |
| Safety Features | Flame Monitor, Active Position Protection, Magnetic Shading Plate, Safety Goggles |
| Package Length | 94 cm |
| Package Width | 53 cm |
| Package Height | 16 cm |
| Package Weight | 10.3 kg |
9. User Tips
- Material Testing: Before starting a large project, always perform small test engravings or cuts on a scrap piece of the same material. This helps in fine-tuning laser power and speed settings for optimal results and to confirm material compatibility (e.g., for cutting 3mm MDF or 2mm acrylic, test settings are crucial).
- Cleanliness: Keep your workspace and the machine clean. Dust and debris can affect laser performance and longevity.
- Software Updates: Regularly check for updates to LightBurn, LaserGRBL, and the ELEGOO mobile app to ensure you have the latest features and bug fixes.
- Focal Length: Accurate focal length adjustment is critical for precise engraving and cutting. Double-check it for each new material or thickness.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact ELEGOO customer support directly through their official website or the contact information provided with your product packaging. Keep your purchase receipt and product serial number handy for faster service.