CO2 Blasting 101: Dry Ice Blasting FAQs

CO2 blasting is a modern cleaning alternative that involves a safe and cost-effective technique. This method is especially appealing to those operating in the food industry, as it poses no safety or health threat, but it’s also a desirable option for businesses operating across countless sectors. What are the most queries customers raise about this cleaning method?

1. What is the origin of the CO2 blasting technique?

The use of this technique dates back to the 1970s. It was during this time when a coatings engineer used the process to remove paint from a plane. But it wasn’t until the late 1980’s that this cleaning technology was first commercialized.

2. Do you use water when cleaning appliances via dry ice blasting?

No. There is no water used in this process. This technique involves compressed carbon dioxide streaming under high pressure against a given surface to clean it. Indeed, it is this compressed air — which measures between 80 and 90 PSI — that blasts dry ice pellets at high speed against the target surfaces that need cleaning.

3. What is the size of the dry ice pellets used? Does this cause any damage on the surface?

The carbon dioxide pellets form at -78 degrees Celsius, streaming out at the size of grains of rice. Unlike sand, glass beads, powders, steam, and industrial solvents, dry ice does not cause any abrasion to the surface. Plus, there is no damage to the substrate, bearings, or integral parts of the machinery.

4. How safe are these materials in cleaning food appliances?

The compact carbon dioxide used in blasting surfaces is of food-grade quality. It is the same type and quality of gas used in the carbonation of soft drinks. In other words, it is considered perfectly safe to use in food and beverage applications.

5. How does CO2 cleaning technology impact on future replacement costs of industrial equipment?

Research shows that this cleaning technique improves the efficiency of the equipment. It also prolongs the machines’ life span. The same cannot always be said for the use of other cleaning agents.

6. Why should you opt for dry ice cleaning services over other methods?

With this technique, there is no need to switch off or dismantle the machine before cleaning. Hence, there is no need for planned downtime. It’s an ideal choice when you need to perform more preventive maintenance checks. It can keep your business running with next to no delays, saving you both time and money.

In addition, this system is a sustainable cleaning option. The essential materials used are non-toxic — hence, safe for the ecosystem. There is no need for a drastic waste disposal plan.

7. How does this technique perform when cleaning hot machinery?

Dry ice pressure washing works well on both hot and cold machinery. It gets all the dirt out faster in more heated surfaces. You won’t have to worry about the temperature conditions of your equipment having a negative effect on your cleaning method.

8. Would you advise using dry ice blasting on electronics?

The process removes dirt or debris from electrical equipment without getting them wet. In fact, it works well on electronics with a live power supply of up to 29 kW. Hence, there is no interruption to the main power supply during cleaning.

9. Can you use this cleaning technique for historical restoration?

Yes. Historical objects often have a build-up of mold, scum, soot, or any other aging factors. You can restore them in a safe and faster way using this non-abrasive technique. This way, all the delicate parts of the items remain intact and dry.

10. Does this cleaning technology make sounds?

Yes, it does. As the air blasts through the nozzle at high velocity, the resulting turbulence tends to produce a loud sound. This sound ranges between 85 dB and 130 dB. For comparison, a normal conversation will occur at 60 dB. This may or may not be of concern to your facility and it’s essential to ensure employees are protected during the cleaning process.

11. Will CO2 blasting remove rust stains?

While this cleaning method is highly effective, it can’t remove everything. In this case, it cannot remove rust stains. Rust arises due to oxidation occurring beneath the metal. Dry ice blasting is most effective when the oxidation is on the surface. You may need to utilize additional methods to remove rust stains from equipment.

12. Must you ground the blasting unit when using it to clean my machinery?

Yes. Dry ice pressure washing is an air process that generates static electricity. Ensure you ground your blasting unit to an earthing point. This way, you get to prevent the occurrence of any static discharge hitches.

Are you still undecided on which cleaning technique to use for your equipment? Get in touch with a cleaning expert who will assess your equipment. Then, you can decide if CO2 blasting is the best alternative for you.