Statement 30:
CAUTION: To reduce the risk of electric shock or energy hazards:
v 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.
v Connect the equipment to a reliably grounded safety extra low voltage (SELV)
source. An 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).
v The branch circuit overcurrent protection must be rated 20 A.
v Use 12 American Wire Gauge (AWG) or 2.5 mm2 copper conductor only, not
exceeding 4.5 meters in length.
v Incorporate a readily available approved and rated disconnect device in the field
wiring.
To install the power supply, complete the following steps:
1. See the server User’s Guide for installation guidelines and additional safety
information.
2. Turn off the server and peripheral devices. Disconnect the power cord and
external cables from the power source.
3. Remove the power-supply filler panel from the empty power-supply bay.
4. Slide the power supply into the bay until it clicks into place. Make sure that you
have pushed the power supply far enough forward that it connects firmly to the
power-supply backplane.
DC power supply
Power supply handle
Power supply
release tab
72 IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide
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