Propane does not freeze naturally until extremely low temperatures, below -42 ° C. However, when using RIPAGREEN continuously, and at high flow with a small 5-6 kg gas cylinder, a physical phenomenon occurs. The cylinder may freeze, preventing gas from escaping. The process speeds up more if the bottle is empty, and if the outside temperature is low. It is recommended to provide a second bottle nearby to work for several hours with the Mobility Pack.