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Maintenance Safety
Take the following precautions:
Use only original accessories and/or components approved for use with this system. Failure to
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observe these instructions may damage the equipment or even violate required safety and EMC
regulations.
The chassis cover should only be removed by Extreme Networks personnel. There are no customer
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serviceable components in this system. Repairs to the system must be performed by an Extreme
Networks factory service technician.
The power on button for the system may not turn off all system power. To remove power from the
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system, you must unplug the all power cords from wall outlets. The power cord is the disconnect
device to the main power source.
Disconnect all power before removing the back panel of any Extreme Networks controller.
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Disconnect all power cords before working near power supplies unless otherwise instructed by a
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maintenance procedure.
When handling modules, optic devices, power supplies, or other modular accessories put on the
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ESD-preventive wrist strap to reduce the risk of electronic damage to the equipment. Leave the
electrostatic ally sensitive device (ESD)-preventive wrist strap permanently attached to the chassis so
that it is always available when you need to handle ESD-sensitive components.
Ensure that all cables are installed in a manner to avoid strain. Use tie wraps or other strain relief
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devices.
Replace power cord immediately if it shows any signs of damage.
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General Safety Precautions
Ensure that you conform to the following guidelines:
Do not attempt to lift objects that you think are too heavy for you.
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When installing in rack, caution should be taken to load heavier devices in lowest portions of rack to
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avoid a top heavy hazard.
For Summit desktop controllers, do not place a monitor or other objects on top of the equipment.
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The chassis cover is not designed to support weight.
Only use tools and equipment that are in perfect condition. Do not use equipment with visible
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damage.
Protecting ESD--To protect ESDs always wear a wristband before carrying out any work on PC
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boards and modules. Transport PC boards only in electrostatic packaging. Always place PC boards
on a grounded surface before working on them.
Laying cables--Lay cables so as to prevent any risk of these cables being damaged or causing
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accidents, such as tripping.
Power Supply Cords Selection
Depending on the controller purchased, Extreme Networks AC power supply units (PSUs) come with
only a 110 VAC cord or both a 110 VAC and 208/220 VAC power supply cords. The power supply
cords provided by Extreme Networks are designed and certified for use in the United States and
Summit WM20 User Guide, Software Release 4.2
Safety Information
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