Product Documentation

Safety, Cautions, Warnings, and Other Information

Nov 21, 2016

Safety Statements

The safety statements below provide the caution and danger information you need to know, before installing the product.

Statement 1

Danger:  Electrical current from power, telephone, and communication cables is hazardous.

To avoid a shock hazard:

  • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm.
  • Connect all power cords to a properly wired and grounded electrical outlet.
  • Connect to properly wired outlets any equipment that will be attached to this product.
  • When possible, use one hand only to connect or disconnect signal cables.
  • Never turn on any equipment when there is evidence of fire, water, or structural damage.
  • Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures.
  • Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices.

 

To Connect

To Disconnect

  1. Turn OFF all power sources and equipment to be attached to this product.
  2. Attach all cables to the devices.
  3. Attach signal cables to the connectors.
  4. Attach power cords to power sources. For DC systems, ensure correct polarity of -48VDC connections: RTN is (+) and -48VDC is (-). Earth ground should use a two-hole lug for safety.
  5. Turn ON all the power sources.
  1. Turn OFF all power sources and equipment to be attached to this product.
  2. For AC systems, remove all power cords from the shelf power receptacles or interrupt power at the ac power distribution unit.
  3. For DC system systems, disconnect DC power sources at the breaker panel or by turning off the power source, then remove the DC cables.
  4. Remove the signal cables from the connectors.
  5. Remove all cables from the devices

Statement 2

Caution:  When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are installed, note the following:

  • Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device.
  • Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure.

Danger:  Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following:

  • Laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam.

 

Statement 3

Caution:

Never remove the cover on a power supply or any part that has the following label attached.

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Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.

Statement 4

Caution: The following label indicates a hot surface nearby.

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Statement 5

Danger: Overloading a branch circuit is potentially a fire hazard and a shock hazard under certain conditions. To avoid these hazards, ensure that your system electrical requirements do not exceed branch circuit protection requirements. Refer to the information that is provided with your device for electrical specifications.

Statement 6

Caution:  This equipment is designed to permit the connection of the earthed conductor of the DC supply circuit to the earthing conductor at the equipment. If this connection is made, all of the following conditions must be met:

  • This equipment shall be connected directly to the DC supply system earthing electrode conductor or to a bonding jumper from an earthing terminal bar or bus to which the DC supply system earthing electrode conductor is connected.
  • This equipment shall be located in the same immediate area (such as, adjacent cabinets) as any other equipment that has a connection between the earthed conductor of the same DC supply circuit and the earthing conductor, and also the point of earthing of the DC system. The DC system shall not be earthed elsewhere.
  • The DC supply source shall be located within the same premises as this equipment.
  • Switching or disconnecting devices shall not be in the earthed circuit conductor between the DC source and the point of connection of the earthing electrode conductor.

Statement 7

Danger:  Electrical current from power, telephone, and communication cables is hazardous.

To avoid a shock hazard:

  • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm.
  • Connect all power cords to a properly wired and grounded electrical outlet.
  • Connect to properly wired outlets any equipment that will be attached to this product.
  • When possible, use one hand only to connect or disconnect signal cables.
  • Never turn on any equipment when there is evidence of fire, water, or structural damage.
  • Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures.
  • Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices.

To Connect

To Disconnect

  1. Turn OFF all power sources and equipment to be attached to this product.
  2. Attach all cables to the devices.
  3. Attach signal cables to the connectors.
  4. Attach power cords to power sources. For DC systems, ensure correct polarity of -48VDC connections: RTN is (+) and -48VDC is (-). Earth ground should use a two-hole lug for safety.
  5. Turn ON all the power sources.
  1. Turn OFF all power sources and equipment to be attached to this product.
  2. For AC systems, remove all power cords from the shelf power receptacles or interrupt power at the ac power distribution unit.
  3. For DC system systems, disconnect DC power sources at the breaker panel or by turning off the power source, then remove the DC cables.
  4. Remove the signal cables from the connectors.
  5.  Remove all cables from the devices

Statement 8

Caution: This device does not provide a power control button. Removing power supply modules or turning off the unit does not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

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Statement 9

Caution: To reduce the risk of electric shock or energy hazards:

  • This equipment must be installed by trained service personnel in a restricted-access location, as defined by the NEC and IEC/UL/CSA 60950-1, The Standard for Safety of Information Technology Equipment.
  • Connect the equipment to a properly grounded safety extra low voltage (SELV) source. A SELV source is a secondary circuit that is designed so that normal and single fault conditions do not cause the voltages to exceed a safe level (60 V direct current).
  • Incorporate a readily available approved and rated disconnect device in the field wiring.
  • See the specifications in the product documentation for the required circuit-breaker rating for branch circuit overcurrent protection.
  • Use copper wire conductors only. See the specifications in the product documentation for the required wire size.
  •  See the specifications in the product documentation for the required torque values for the wiring-terminal nuts.

Statement 10

Caution: During installation or maintenance procedures, wear a grounding wrist strap to avoid ESD damage to the electronics of the appliance. Use a conductive wrist strap attached to a good earth ground or to the appliance. You can attach it to the connector beside the ESD symbol on the back.

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Statement 11

Warning: Hazardous moving parts. Keep away from moving fan blades.

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Fiber Optic Safety Information

Danger: Hazardous Radiation

Fiber optic products use laser radiation with the potential to cause injury. Uncovered ports may release this radiation. Avoid direct exposure to laser radiation. Do not stare into the beam, and do not view directly with optical instruments. Do not remove any protective shields on fiber optic transceiver modules.

Cautions, Warnings, and Other Information

To find more information about cautions, warnings, power and site requiements, see  the sections Preparing the Site and Rack and Electrical Safety Precautions.