Owner`s manual

3–14 SF72 Storage Enclosure Operation
WARNING
Hazardous voltages are present inside the equipment cabinet and
the SF72 enclosure. Installation and service must be performed
only by qualified Digital Customer Services engineers.
When performing any operation involving the source power,
verify that the enclosure ac power switch, located on the power
supply at the rear of the enclosure, is turned off. Disconnect the
line cord from the enclosure rear panel and from the cabinet
power controller, if possible. Perform the operation, then
reconnect the cord.
The ac power switch for the SF72 enclosure is in the center of the rear
panel. Setting the ac power switch in the position labeled ‘‘1’’ applies
power to the SF72. Setting the switch in the position labeled ‘‘0’’ removes
power from the enclosure.
As you face the rear panel, the line voltage selector switch is located to
the right of the ac power switch. It is visible through a hole in the rear
panel. The Digital Customer Services engineer sets this switch to the
available line voltage during installation. The number ‘‘120’’ represents
120 Vac at 60 Hz, and the number ‘‘240’’ represents 240 Vac at 50 Hz.
CAUTION
The SF72 enclosure power supply is universal for both 120 Vac
and 240 Vac. The supply is factory-set to 240 Vac and must be
reset to 120 Vac for some installations. Selecting 120 Vac and
using 240 Vac will damage the power supply.
The power supply fault indicator is behind the panel, in the lower right
corner of the SF72 storage enclosure. When the fault indicator is lit,
a green light is visible through the holes in the rear panel. The SF72
enclosure automatically shuts down when the dc power supply detects a
fault or overtemperature condition.