Do not use with gasoline or chemical solutions. Gasoline or flammable liquids are strictly prohibited using this pump. This pump is suitable for sending light oil, paraffin and water fluid.It is best to use this pump intermittently, i.e. not to use continuously for more than 20 minutes, and rest for 10-15 minutes after each operation and start again.The pump only drive when submerged in the liquid, never idle, and remove it from the liquid immediately after completion.Please make sure your voltage and power are suitable for this pump, the voltage range is ±5%, please pay attention to negative and positive connections.