7. Lift the server cover off the server and set the server cover aside.Attention: For proper cooling and airflow, replace the server cover before youturn on the server. Operating the server for extended periods of time (more than 30minutes) with the cover removed might damage server components.Installing a hot-swap power supplyThe following notes describe the type of power supply that the server supports andother information that you must consider when you install a power supply:v The server comes with one 450-watt hot-swap 12-volt output power supply. Theinput voltage is 110 V ac or 220 V ac auto-sensing.v You can install an optional 450-watt hot-swap 12-volt output power supply to useas a redundant power supply.v These power supplies are designed for parallel operation. In the event of apower-supply failure, the redundant power supply continues to power the system.The server supports a maximum of two power supplies.Note: If you are using a Y power cable between two servers that act as backuppower units, see “Installing a Y power cable” on page 25 for informationabout how to connect a Y power cable.Statement 8:CAUTION:Never remove the cover on a power supply or any part that has the followinglabel attached.Hazardous voltage, current, and energy levels are present inside anycomponent that has this label attached. There are no serviceable parts insidethese components. If you suspect a with one of these parts, contact a servicetechnician.To install a hot-swap power supply, complete the following steps:1. Read the safety information that begins on page v and “Installation guidelines”on page 20.2. If you are installing a hot-swap power supply into an empty bay, remove thepower-supply filler panel from the power-supply bay.24 IBM System x3350 Types 4192 and 4193: User’s Guide
