IBM x3550 Problem Determination And Service Manual page 90

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
v Connect the equipment to a reliably grounded safety extra low voltage (SELV)
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
v Incorporate a readily available approved and rated disconnect device in the field
To install the power supply, complete the following steps:
1. See the server User's Guide for installation guidelines and additional safety
2. Turn off the server and peripheral devices. Disconnect the power cord and
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
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IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide
restricted-access location, as defined by the NEC and IEC 60950-1, First Edition,
The Standard for Safety of Information Technology Equipment.
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).
exceeding 4.5 meters in length.
wiring.
information.
external cables from the power source.
have pushed the power supply far enough forward that it connects firmly to the
power-supply backplane.
DC power supply
Power supply
release tab
Power supply handle