IBM System Storage DCS9900 1269-3S2 Storage Expansion Unit Installation, Service, and User Guide
ix
Figure P-6
PSU/Cooling Module Caution Label:
Do not operate with modules missing.
• A faulty power supply/cooling module must be replaced with a fully operational module within 24
hours.
• Do not remove a faulty power supply/cooling module unless you have a correct replacement product
ready for insertion.
Figure P-7 PSU Warning Label (Power Hazards)
• Always disconnect power to the product prior to removal of the power supply/cooling module from
the product chassis.
• When powered by multiple AC sources, disconnect all supply power for complete isolation.
• Provide a safe electrical earth (ground) connection for the power cord. Check the grounding of the
enclosure before applying power.
• Provide a suitable power source with electrical overload protection to meet the requirements detailed
in the product’s technical specifications.
To ensure protection against electric shock caused by HIGH
LEAKAGE CURRENT (TOUCH CURRENT), the enclosure
must be connected to at least two separate and independent
sources. This should ensure a reliable earth connection.
To ensure your system has warning of a power failure,
disconnect the power from the PSU by either the switch
(where present) or by physically removing the power source,
prior to removing the PSU from the enclosure.
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Warning
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Warning
