HP LH4r HP Netserver LH 3 Pedestal-to-Rack Guide - Page 9

2 Removing LH 3 Covers and Components CAUTION Never operate this NetServer without first installing all covers and the front bezel. Operating the system without all covers in place reduces critical cooling airflow over some components, such as hard disk drives and processor modules. Operating the system without all covers in place may result in failure of these components. The HP NetServer LH 3 must have its covers in place for proper cooling. When you open the HP NetServer while it is operating, do not run it for more than 3 minutes. Do not operate the HP NetServer for more than 2 minutes without a working fan mounted immediately behind the power supplies. Failure to observe these precautions may result in thermal damage to the HP NetServer. WARNING Before removing the cover, always disconnect the power cord and unplug telephone cables. Disconnect the power cord to avoid exposure to high energy levels that may cause burns when parts are short-circuited by metal objects, such as tools or jewelry. Disconnect telephone cables to avoid exposure to shock hazard from telephone ringing devices. Note that the power switch does not turn off the standby power. Disconnect the power cord to turn off standby power. If the backlight on the LCD display is on, standby power is still on. CAUTION Wear a wrist strap and use a static-dissipating work surface connected to the chassis at all times. 5