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Today, almost the high building glass surface are cleaned by mannual. The labour hang up by the rope which anchor at top of building and they use the support tools to clean the glass surface. This job has many risks for labour and the cleanning capacity is not high. So, using machine substitute labour in cleaning the glass surface is necessary. The machine decrease risks for labour, increase capacity cleaning and do in the rain weather condition. The machine is controlled by the mechanisms which activity follow one before identify cycle.