Abstract: A cleaning apparatus has a compressor (12), an electromagnetic valve (33) connected to the compressor (12), and first to third timers (27 to 29). The first timer (27) sets an open/close time and a close time for repeatedly opening and closing an electromagnetic valve (33). The second timer (28) sets a time for feeding compressed air into a pipe (35). The third timer (29) stops the operation of the second timer (28) until an activation inhibition time elapses from a point at which the pressure of the compressed air has reached a predetermined upper limit, and further permits the operation of the second timer (28) after the activation inhibition time elapses.