4Preparing for installationThis chapter includes these sections:• Safety recommendations• Examining the installation site• Tools and equipmentSafety recommendationsTo avoid possible bodily injury and equipment damage, read the safety recommendations in this chaptercarefully before installing an H3C S10500 switch. The recommendations do not cover every possiblehazardous condition.General safety recommendations• Keep the chassis clean and dust-free. Do not place the switch on a moist area and avoid liquidflowing into the switch.• Make sure that the ground is dry and flat and you have adopted anti-slip measures.• Keep the chassis and installation tools away from walk areas.• Do not wear loose clothing, jewelry (for example, necklace) or any other things that could getcaught in the chassis when you install and maintain the switch.Safety with electricity• Clear the work area of possible hazards, such as ungrounded power extension cables, missingsafety grounds, and moist floors.• Locate the emergency power-off switch in the room before installation. Shut the power off at once incase accident occurs.• Unplug all the external cables (including power cables) before moving the chassis.• Do not work alone when the switch has power.• Always check that the power has been disconnected.Safety with switch movingTo move an H3C S10500 switch, follow these steps:• Remove all the external cables (including the power cables) before moving the chassis.• Use at least two persons to move the switch, and use a mechanical lift if necessary.• Move the switch carefully.