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4.0 OPERATION & MAINTENANCE
The XDA is activated by turning on the
ON/OFF switch on the bottom of the
unit, near the power cords. All fans
operate continuously to remove the
maximum amount of heat from the cab-
inet.
If a power failure should occur on the
primary power source, the XDA will
operate from the secondary source until
the primary power source is restored.
The XDA will continue to operate as
long as either of the two power sources is available.
The Liebert XDA is essentially maintenance-free. An occasional vacu-
uming at the same time other cabinet equipment is cleaned is ade-
quate.
ON/OFF switch
(seen from below the XDA)