carbon dioxide should be fed to the treatment chamber 10 from the supply tank 18 this phase starts with pressure balancing between the gas side of the supply tank 18 i e the uppermost part of the supply tank and the treatment chamber 10 and for this purpose the valve 34 will be opened the valves 29 and 33 are already open when the pressures in the treatment chamber 10 and in the supply tank 18 are equalized the valve 24 will open and liquid carbon dioxide will flow through the tube 20 the valve 24 and the tube 22 into the treatment chamber 10 up to a predetermined level the amount of transferred carbon dioxide can easily be determined through measuring the lowering in level in the supply tank 18 by placing the supply tank 18 on a higher level than the treatment chamber 10 the transfer of liquid carbon dioxide from the supply tank to the treatment chamber can take place due to influence of gravitation thereby dispensing of the need for a pump when the filling of the treatment chamber has been completed all valves are closed and the cleaning process in the treatment chamber can commence this process proceeds for roughly 10 minutes shortly afterwards the drum 14 with its load of garments rotates in the liquid carbon dioxide and during the rotation treats and performs a stirring of the articles of clothing so as to.