The second stage is the mechanical cleaning of the inner walls of the pipes. This is done by injecting a mix of pressurized air and quartz sand into the installation.
After completion of the drying stage, the shunts are cleaned by injecting a mix of pressurized air and quartz sand into the installation until the pipes are perfectly clean.
After cleaning, all the outlets and inlets are checked.
After cleaning, when the installation is perfectly clean and shining, the installation is heated with warm air to a temperature of approximately 40Â° Celsius.