Avoiding electric shock

Learn about precautions you should take to avoid electric shock when working on our around a computer system.

DANGER
When working on or around the system, observe the following precautions:
Electrical voltage and current from power, telephone, and communication cables are hazardous. To avoid a shock hazard:
  • If IBM supplied the power cord(s), connect power to this unit only with the IBM provided power cord. Do not use the IBM provided power cord for any other product.
  • Do not open or service any power supply assembly.
  • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm.
  • The product might be equipped with multiple power cords. To remove all hazardous voltages, disconnect all power cords.
    • For AC power, disconnect all power cords from their AC power source.
    • For racks with a DC power distribution panel (PDP), disconnect the customer’s DC power source to the PDP.
  • When connecting power to the product ensure all power cables are properly connected.
    • For racks with AC power, connect all power cords to a properly wired and grounded electrical outlet. Ensure that the outlet supplies proper voltage and phase rotation according to the system rating plate.
    • For racks with a DC power distribution panel (PDP), connect the customer’s DC power source to the PDP. Ensure that the proper polarity is used when attaching the DC power and DC power return wiring.
  • Connect any equipment that will be attached to this product to properly wired outlets.
  • 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.
  • Do not attempt to switch on power to the machine until all possible unsafe conditions are corrected.
  • Assume that an electrical safety hazard is present. Perform all continuity, grounding, and power checks specified during the subsystem installation procedures to ensure that the machine meets safety requirements.
  • Do not continue with the inspection if any unsafe conditions are present.
  • Before you open the device covers, unless instructed otherwise in the installation and configuration procedures: Disconnect the attached AC power cords, turn off the applicable circuit breakers located in the rack power distribution panel (PDP), and disconnect any telecommunications systems, networks, and modems.
DANGER
  • Connect and disconnect cables as described in the following procedures when installing, moving, or opening covers on this product or attached devices.
    To Disconnect:
    1. Turn off everything (unless instructed otherwise).
    2. For AC power, remove the power cords from the outlets.
    3. For racks with a DC power distribution panel (PDP), turn off the circuit breakers located in the PDP and remove the power from the Customer's DC power source.
    4. Remove the signal cables from the connectors.
    5. Remove all cables from the devices.
    To Connect:
    1. Turn off everything (unless instructed otherwise).
    2. Attach all cables to the devices.
    3. Attach the signal cables to the connectors.
    4. For AC power, attach the power cords to the outlets.
    5. For racks with a DC power distribution panel (PDP), restore the power from the Customer's DC power source and turn on the circuit breakers located in the PDP.
    6. Turn on the devices.
    Sharp edges, corners and joints may be present in and around the system. Use care when handling equipment to avoid cuts, scrapes and pinching. (D005)
Parent topic: Related procedures for installing PCI adapters
Parent topic: Related procedures for installing and removing PCIe adapters
Parent topic: Related procedures for installing and removing PCIe adapters


Last updated: Mon, November 12, 2018