| 摘要 |
In a cleaning machine provided with a main body 1 which discharges cleaning liquid by a pump 30 and a cleaning gun 2 which is connected to the main body 1, the cleaning machine has: an electric motor 31 which receives electric power supply from a battery pack 40 and which drives the pump 30; and a control circuit 63 which changes a rotating speed of the electric motor 31 so as to increase/decrease the discharging pressure of the cleaning liquid. When the voltage of the battery pack 40 is decreased down to a predetermined second voltage higher than a predetermined first voltage at which the electric power supply to the electric motor 31 is stopped, the largest discharging pressure of the cleaning liquid is decreased to be lower than a current-state discharging pressure thereof. |
