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1. Prior to Starting
The HVS-49PSO power supply unit is specifically designed for HVS-492OU, HVS-492WOU, and
HVS-492ROU units. A standard HVS-492OU/HVS-492WOU/HVS-492ROU comes with a single power
supply unit installed into one of its two power slots. The optional HVS-49PSO power supply unit allows
you to operate the unit continuously, even if one power supply unit fails.
CAUTION
Installing this option, which requires accessing the unit interior by opening the
panel, should only be done by qualified technical personnel. Power should be
turned OFF and all power cords disconnected from the unit before performing
this installation.
