| 摘要 |
PURPOSE:To secure safety by carrying out check by measuring the time necessary for the shift of the revolution adjustment range after the self cleaning in the case when a power is turned ON, and repeating a check when a set time is exceeded, and stopping the operation of a shower device when improvement is not realized. CONSTITUTION:Self cleaning for a slid contact point is performed by rotating a valve motor 1 which drives a shower nozzle 2 right and let for a certain time. Then, each time for the right and left revolution is detected by limit switches 9a and 9b, and the accumulative time is measured by an anomaly judging circuit 13, and a self check is carried out. When the accumulative time exceeds a set time, self cleaning operation and self check operation are carried out again. When the accumulative time for the recheck operation exceeds a set time, an alarm means 14 operates to stop a shower device 16. Accordingly, the self cleaning for the sliding surface is carried out, and safety in the case of anomaly is secured. |
