In a method for cleaning the foreign materials filtering, foreign materials collected in a foreign materials filtering space can be easily removed under a filter unit is separated from or is mounted at a filter cover unit. Also provided are methods of treatment using modified growth hormone polypeptides. Further, the control portion determines an output value of the heat output portion according to a transfer function of PID control based on a difference between the setting value of the temperature in the housing and the temperature measured by the second temperature sensor. In yet a further aspect, replacing repetitive replacement control sequences with repetitive sequences of values in the body of GIOP message for control sequences upon receipt of the message decompresses the message.