Hazards arose from selecting model installation:
　　 1 、 Select wrong model ；
　　 2 、 Apply the centrifuge regardless of the usage range, for instance, use the common model in the flammable and explosive environments; use the machine without anti-corrosion materials and devices to separate the corrosive materials ；
　　 3 、 Operate the machine regardless of the operational procedures and rules, e.g. abnormally braking, running in overload and over rotation speed ；
　　 4 、 Haven't tackled the machine failures in time. Haven't scrapped the invalid machines ；
　　 5 、 Installation, use and repair are not in accordance with the user guide, or even change the components, increase the rotation speed and add or take away the accessories parts by themselves regardless the user guide 。