| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the load of an operator in cleaning work and to clean a pipe well by installing an alarm raising means for giving an alarm when the load of a motor of a set value or above is detected by a load detecting means for detecting the load. SOLUTION: A control circuit 5 for driving/controlling a motor 2 is connected to the motor 2, and a load detecting means 6 is set between the circuit 5 and the motor 2. The load detecting means 6 detects the value of the current which is supplied from the control circuit 5 to the motor 2 and rotates/drives the motor 2, and the value is transmitted to the circuit 5. The circuit 5 gives an alarm sound from a speaker 9 when the value of the current for driving the motor 2 detected by the means 6 is greater than a value set in advance by a load setting handle 10. In this way, an alarm giving means 11 is constituted from the control circuit 5 and the speaker 9.</p> |
