1. Introduction
The LOTOS Supreme LTP5500D is a state-of-the-art non-touch pilot arc digital plasma cutter designed for both home DIY enthusiasts and light-duty small business projects. This powerful and portable unit offers dual voltage capability (110V/220V) and is engineered for precise and efficient metal cutting. Its non-HF (Non-High Frequency) blowback start ensures minimal interference, making it a reliable choice for various applications.

Figure 1: LOTOS Supreme LTP5500D Plasma Cutter with included accessories.
2. Safety Information
Always prioritize safety when operating the plasma cutter. Read and understand all warnings and instructions before use. Ensure proper ventilation, wear appropriate personal protective equipment (PPE) including welding helmet, gloves, and protective clothing. Do not operate in wet conditions. Disconnect power before performing any maintenance or changing consumables.

Figure 2: Important safety warnings are displayed on the unit. Always adhere to these guidelines.
3. What's in the Box
Your LOTOS Supreme LTP5500D package includes the following components:
- Plasma Cutter Power Supply Unit
- Blowback Non-HF Start Cutting Torch
- Ground Clamp
- Consumables (initial set)
- Pre-installed NPT 1/4">
Figure 7: Only use specified compatible consumables for your LTP5500D.
6.2 Air Filter Regulator
Periodically check and drain any accumulated moisture from the air filter regulator to ensure a clean and dry air supply to the plasma cutter. A clean air supply is crucial for arc stability and consumable life.
7. Troubleshooting
If you encounter issues with your LTP5500D, consider the following common troubleshooting steps:
- No Arc: Check power connection, air pressure (ensure 70 PSI), and ensure consumables are correctly installed and not worn out. Verify the ground clamp has good contact.
- Poor Cut Quality: Adjust amperage and air pressure settings. Inspect consumables for wear and replace if necessary. Ensure proper cutting speed.
- Unit Overheating: Allow the unit to cool down. Ensure proper ventilation around the machine.
For more detailed troubleshooting or persistent issues, please contact LOTOS Customer Care.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | LTP5500D |
| Input Voltage | Automatic Dual Voltage 110~125V or 215~245V |
| Output Current (DC) | 20-55A (220/240V), 20-35A (110/120V) |
| Clean Cut Capacity (220/240V) | 3/4 inch (19mm) |
| Max Severance Cut (220/240V) | 1 inch (25mm) |
| Air Compressor Requirement | 70 PSI @ 4.0SCFM |
| Product Dimensions | 19.69 x 11.81 x 13.78 inches |
| Product Weight | 21.9 Pounds |
| Manufacturer | Lotos Technology |
9. Warranty & Support
LOTOS Technology stands behind its products with comprehensive support:
- 30 Days Refund: If you are not satisfied, a refund is available within 30 days of purchase.
- 3-Years Limited Warranty: Includes a 1-Year NEW Replacement Warranty.
- US-Based Customer Care & Support Team: For any inquiries or assistance, please contact LOTOS Technology via phone or email. You may also submit the registration form on their official website.





