Installation ManualH3C S7500 Series Ethernet Switches Chapter 3 Installation Preparations3-1Chapter 3 Installation Preparations3.1 Safety PrecautionsTo avoid bodily injury and device damage, please read the following safetyrecommendations carefully before installing the S7500 series. The recommendationsdo not cover every possible hazardous condition.3.1.1 General Safety Recommendationsz Keep the chassis clean and dust-free.z Keep the chassis and installation tools away from walk areas.z Do not wear loose clothing, jewelry (including ring and necklace, and so on), orany other things that could get caught in the chassis when you install or maintainthe switch.3.1.2 Electrical Safetyz Look carefully for possible hazards in your work area, such as ungrounded powerextension cables, missing safety grounds, and moist floors.z Locate the emergency power switch in the room before installation so that you canshut the power off at once in case of an electrical accident.z Unplug all external cables before moving the chassis.z Avoid maintaining the equipment alone when it is powered by electricity.z Never assume that power is disconnected from a circuit. Always check.z Do not place the switch on a moist area or let liquid flow into it.3.1.3 Handling SafetySince the S7500 series are rather large and heavy, you should follow therecommendations below.z Disconnect all power and all external cables (including power cables) beforecarrying or moving the chassis.z Ask somebody to move the switch together.z Move the switch slowly and stably.z Keep in step with your partner and balance your bodies when moving the switch.