Practice Guide
Mirka DEOS II & LEROS – Precision Sanding System
This practice guide explains how to achieve clean and ergonomic results with the Mirka DEOS II 230 V series and the Mirka LEROS short variant 950 CV – from setup and speed settings to maintenance and troubleshooting.
Product Overview – DEOS II Models at a Glance
| Model | Power | Orbit | Speed Range | Weight |
|---|---|---|---|---|
| DEOS II 343 | 300 W | 3 mm | 5 000–10 000 rpm | 0.97 kg |
| DEOS II 383 | 300 W | 3 mm | 5 000–10 000 rpm | 1.0 kg |
| DEOS II 663 | 300 W | 3 mm | 5 000–10 000 rpm | 0.97 kg |
Low Noise
Around 70 dB(A) sound pressure – comfortable for long sessions.
Low Vibration
2.6–3.3 m/s² – protects joints and reduces fatigue.
Ergonomic Design
Perfect balance, flat housing and dust-free operation.
💡 Pro Tip: For maximum dust control, always connect the DEOS II to a Mirka industrial vacuum cleaner. This keeps the surface clear and extends abrasive life.
Recommended Base Settings (Guidelines)
- Speed: 7 000–8 000 rpm for wood and filler materials
- Orbit: 3 mm (factory set)
- Backing Pad: 70–198 mm depending on model
- Extraction: Auto mode via Mirka vacuum
- Bluetooth (optional): hold speed + while switching on to activate
Professional Workflow – Sanding in 6 Steps
- Secure the workpiece and ensure good lighting.
- Select the proper abrasive net and pad for the material.
- Set speed between 5 000 and 10 000 rpm.
- Sand with light, even pressure in steady motions.
- Vacuum the dust regularly and inspect the surface.
- After use: switch off, clean, and store dry.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Incorrect mains voltage | Use a matching socket outlet |
| LED blinks red/green | Plug not properly connected | Reconnect cable correctly |
| Speed drops during sanding | Excessive pressure on surface | Reduce applied pressure |
Maintenance – 5 Point Checklist
- Inspect the tool regularly for wear.
- Empty or replace dust bag daily.
- Replace the backing pad if worn (four screws).
- Keep air exhaust channels clean.
- Servicing only by authorized Mirka technicians.
FAQ – Common Questions
- Can I use any abrasive? Use Mirka net abrasives for optimal dust extraction.
- How to activate Bluetooth? Hold speed + and switch on the tool.
- How loud is the machine? Approximately 70 dB(A), depending on model.
- When should I replace the pad? Once visible wear or uneven motion appears.
- Can I sand vertically? Yes, as long as you maintain a firm stance and grip.
Conclusion
The Mirka DEOS II offers precise speed control, light weight and smooth running – ideal for high-end surface finishing. Together with the Mirka LEROS short variant, it forms a dust-free and ergonomic system for maximum efficiency in professional use.
