D-Link xStack DES-3200 Series Installation Manual - page 6

xStack® DES-3200 Series Layer 2 Managed Fast Ethernet Switch Hardware Installation Guide 

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If the system has multiple sources of power, disconnect power from the system by unplugging all power 

cables from the power supplies. 

Move products with care; ensure that all casters and/or stabilizers are firmly connected to the system. Avoid 

sudden stops and uneven surfaces. 

General Precautions for Rack-Mountable Products 

Observe the following precautions for rack stability and safety. Also, refer to the rack installation documentation 

accompanying the system and the rack for specific caution statements and procedures. 

Systems are considered to be components in a rack. Thus, "component" refers to any system as well as to 

various peripherals or supporting hardware. 

Before working on the rack, make sure that the stabilizers are secured to the rack, extended to the floor, and 

that the full weight of the rack rests on the floor. Install front and side stabilizers on a single rack or front 

stabilizers for joined multiple racks before working on the rack. 

Always load the rack from the bottom up, and load the heaviest item in the rack first. 

Make sure that the rack is level and stable before extending a component from the rack. 

Use caution when pressing the component rail release latches and sliding a component into or out of a rack; 

the slide rails can pinch your fingers. 

After a component is inserted into the rack, carefully extend the rail into a locking position, and then slide the 

component into the rack. 

Do not overload the AC supply branch circuit that provides power to the rack. The total rack load should not 

exceed 80 percent of the branch circuit rating. 

Ensure that proper airflow is provided to components in the rack. 

Do not step on or stand on any component when servicing other components in a rack. 

NOTE:

 A qualified electrician must perform all connections to DC power and to safety grounds. All 

electrical wiring must comply with applicable local, regional or national codes and practices. 

CAUTION:

 Never defeat the ground conductor or operate the equipment in the absence of a suitably 

installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if 

you are uncertain that suitable grounding is available. 

CAUTION:

 The system chassis must be positively grounded to the rack cabinet frame. Do not 

attempt to connect power to the system until grounding cables are connected. A qualified electrical 

inspector must inspect completed power and safety ground wiring. An energy hazard will exist if the 

safety ground cable is omitted or disconnected. 

CAUTION:

 Do not replace the battery with an incorrect type.  The risk of explosion exists if the 

replacement battery is not the correct lithium battery type. Dispose of used batteries according to the 

instructions. 

Protecting Against Electrostatic Discharge 

Static electricity can harm delicate components inside your system. To prevent static damage, discharge static 

electricity from your body before you touch any of the electronic components, such as the microprocessor. You can do 

so by periodically touching an unpainted metal surface on the chassis. 

You can also take the following steps to prevent damage from electrostatic discharge (ESD): 

1. 

When unpacking a static-sensitive component from its shipping carton, do not remove the component from the 

antistatic packing material until you are ready to install the component in your system. Just before unwrapping 

the antistatic packaging, be sure to discharge static electricity from your body. 

2. 

When transporting a sensitive component, first place it in an antistatic container or packaging. 

3. 

Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads, workbench pads and 

an antistatic grounding strap. 

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