User guide

Installation
Before beginning these procedures, make sure you understand the following
warnings and caution:
To reduce the risk of personal injury or damage to the equipment,
be sure that:
■ The leveling jacks are extended to the floor.
■ The full weight of the rack rests on the leveling jacks.
■ The stabilizing feet are attached to the rack, if it is a single rack
installation.
■ The racks are coupled in multiple rack installations.
■ A rack may become unstable if more than one component is extended for
any reason. Extend only one component at a time.
To reduce the risk of electric shock or damage to the equipment:
■ Do not disable the power cord grounding plug. The grounding plug is an
important safety feature.
■ Plug the power cord into a grounded (earthed) electrical outlet that is
easily accessible at all times.
■ Install the power supply before connecting the power cord to the power
supply.
■ Unplug the power cord before removing the power supply.
■ If the system has multiple power supplies, disconnect power from the
system by unplugging all power cords from the power supplies.
The Compaq RA4000 must always be operated with the system unit
cover on. Proper cooling will not be achieved if the system unit cover is
removed.