Some Storwize® V3700 enclosure models run in a direct
current (DC) power environment rather than the alternating current (AC) environment required by the
other models in the range.
This topic describes the additional information you need to know when using the DC power
models.
DANGER
Hazardous voltage, current, or
energy levels are present inside any component that has this label
attached. Do not open any cover or barrier that contains this label.
(L001)
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 a 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.
- 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.
- 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.
- 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 procedures when installing, moving,
or opening covers on this product or attached devices.
To disconnect:
- Turn off everything (unless instructed otherwise).
- Remove the power cords from the outlets.
- Remove the signal cables from the connectors.
- Remove all cables from the devices.
To connect:
- Turn off everything (unless instructed otherwise).
- Attach all cables to the devices.
- Attach the signal cables to the connectors.
- Attach the power cords to the outlets.
- 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)
Statement 19:
CAUTION:
The power-control button on the device does not turn off the electrical current
supplied to the device. The device also might have more than one connection to DC power. To remove
all electrical current from the device, ensure that all connections to dc power are disconnected at
the DC power input terminals.
Statement 34:
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 60950-1, First Edition, 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 screws.
Note: In Statement 34 above:
- Replace IEC 60950-1, First Edition with IEC 60950-1, Second Edition Amendment 1.
- The required circuit breaker rating is 20 amps.