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Before cleaning, pay attention to climatic conditions, personnel conditions and equipment conditions.

1. Climatic conditions: the exterior wall cleaning must be carried out under good climatic conditions. The wind force shall be less than grade 4, and the work shall be stopped above grade 4. Therefore, the wind force should be measured before work, especially at high altitude. In addition, exterior wall cleaning is not suitable under the conditions of rain, snow, fog, poor visibility, high temperature (above 35 ℃) and low temperature (below 0 ℃).

2. Personnel conditions: in order to implement the national safety regulations and ensure the personal safety of workers and the normal operation of equipment, it is stipulated that the high-altitude operator must be a male citizen over the age of 18. The worker shall not drink alcohol before taking the post, and the high-altitude operation shall be suspended if he has physical discomfort such as cold; People suffering from heart disease, hypertension, epilepsy, psychosis, Meniere's syndrome, severe anemia, arthritis, acrophobia, visual impairment and other people who are not suitable for climbing shall not work at heights.

3. Equipment conditions: the equipment for exterior wall cleaning must be in good working condition. The equipment can be debugged before cleaning, especially when the equipment is not used for a long time, check whether the hydraulic oil is sufficient, etc.

Yousi reminded: in addition to paying attention to the above problems, it is also necessary to make sufficient preparations and find the correct position to make the elevator firmly fixed and avoid inclination. It is best to have staff below during lifting operation to achieve double insurance.