Gema OptiFlex Pro: The comprehensive practical guide for maximum coating quality
Do you want to take your manual powder coating to the next level? The Gema OptiFlex Pro series combines maximum performance with intelligent control systems for first-class results – even under demanding industrial conditions. In this guide, you will learn which model suits your requirements, how to set it up optimally, and which professional tips will increase your productivity.
Product overview: The right OptiFlex Pro model for your application
The OptiFlex Pro series offers the right solution for every requirement. From fast color changes to the processing of difficult powders.
| Model | Area of application | Key advantage |
|---|---|---|
| OptiFlex Pro B | Frequent color change | Works directly from the original powder box, cleanest changeover |
| OptiFlex Pro Q | Super-fast color change | Color change in approx. 35 seconds (guideline value) |
| OptiFlex Pro F | Continuous operation | 50 l fluidized container for large powder quantities |
| OptiFlex Pro S | Difficult-to-fluidize powders | Unique agitator prevents segregation |
| OptiFlex Pro C/CF/L | Laboratory, very small quantities & tests | Perfect for testing, samples, and small batches |
⏱️ Extreme color changes
With models B and Q, you can change colors cleanly and quickly – ideal for variant-rich production.
⚡ PowerBoost technology
Up to 110 kV charging voltage for excellent powder charging and maximum surface coverage with all powder types.
📱 Smart control
The Electrostatic App (E-App) and OptiStar 4.0 make the process transparent and controllable.
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Recommended basic settings (guideline values)
For a reproducible and high-quality starting point. Adjust these values depending on powder, object, and environmental conditions.
| Parameter / component | Guideline / recommendation |
|---|---|
| Input pressure (manual unit) | Max. 10 bar / 145 psi |
| Input pressure (OptiStar control unit) | Approx. 5.5 bar / 80 psi |
| Humidity (max. in compressed air) | 1.3 g/m³ |
| Nozzle selection (OptiSelect Pro) | Flat spray for large surfaces, round spray for profiles/cavities |
| Powder output (OptiFlow injector) | Up to 450 g/min (depending on hose length) |
Professional workflow for optimal results
- Preparation: Degrease, sandblast, and dry the object. Check compressed air for purity (max. 0.1 mg/m³ oil content).
- System selection: Select the appropriate OptiFlex Pro model (e.g., Pro F for large quantities, Pro Q for fast color change).
- Basic configuration: Connect compressed air (5.5–10 bar) and power (100–240 V). Mount the nozzle suitable for your object on the OptiSelect Pro gun.
- Set parameters: Select a standard program (e.g., "Flat parts") on the OptiStar 4.0 display or create an individual program. Activate PCC Mode for difficult powders/parts.
- Test run & optimization: Perform a test on a sample part. If necessary, finely adjust powder output (DVC) and high voltage using the integrated remote control or E-App.
- Coating: Maintain a constant gun distance (approx. 20–30 cm) and a uniform guiding angle. Use the E-App for documentation.
- Cleaning & maintenance: Clean the system after a color change or at the end of the shift. Optionally use the PowerClean module for even more efficient cleaning.
Common problems & solutions
1. Uneven layer thickness
- Check: Powder output (DVC technology) and gun guidance.
- Solution: Match the nozzle to the object geometry and keep the guiding speed constant.
2. Poor penetration in corners
- Check: High-voltage setting and Faraday cage effect.
- Solution: Activate PCC Mode, reduce high voltage if necessary, and work with a round spray nozzle.
3. Powder spitting or unstable spray pattern
- Check: OptiFlow injector cartridge for wear/contamination and compressed air humidity.
- Solution: Clean or replace the cartridge, service the compressed air dryer.
4. Slow color change
- Check: Cleaning process and system model.
- Solution: Switch to OptiFlex Pro Q for extremely fast changes. Use the PowerClean module.
Maintenance checklist (regular)
- Gun & nozzles: Clean the OptiSelect Pro gun and nozzle sets, check for wear.
- Injector: Visually inspect the OptiFlow injector cartridge and replace according to manufacturer specifications.
- Hoses & lines: Check for kinks, abrasion, and clean inner walls.
- Compressed air system: Maintain filters and dryers to prevent oil and moisture ingress.
- Control unit: Keep OptiStar 4.0 software/firmware up to date, use the E-App for maintenance logs.
FAQ – Frequently asked questions about OptiFlex Pro
1. Which model is suitable for laboratory tests and very small quantities?
The OptiFlex Pro C, CF, and L models are ideal for this. They work with small, self-fluidizing application cups (150–600 ml) or a 4-liter hopper and deliver reproducible results for testing and small batches.
2. What does the PowerBoost technology specifically provide?
PowerBoost ensures particularly efficient powder charging with up to 110 kV. This means higher productivity, faster conveying speed, and maximum surface coverage – even with difficult powders.
3. How fast is a color change possible with the series?
This depends on the model. The OptiFlex Pro Q is specifically designed for super-fast color changes and achieves them in guideline values of 30–40 seconds. Model B enables a very clean change directly from the original box.
4. When should I use the optional SuperCorona insert?
For thicker layers or multi-layer applications. SuperCorona neutralizes free ions and thus reduces the orange peel effect (back ionization) and the “picture frame” effect on edges.
5. Can I upgrade my old Gema systems with OptiFlex Pro components?
Yes, in particular the OptiSelect Pro gun and the OptiStar 4.0 control unit are also suitable for upgrading existing systems. The OptiFlex Pro W model is also specifically designed as a retrofit solution and can be integrated into existing booths.
Conclusion
With its modular design, powerful PowerBoost technology, and intelligent control via the E-App, the Gema OptiFlex Pro series sets new standards in manual powder coating. Whether you value extremely fast color changes, handling difficult powders, or precise coating of very small parts – the product range offers the right solution for maximum quality and efficiency in your production day-to-day operations.
