Selection Pads; Power Status Diagram - Liebert 300 series Installation, Operaton & Maintenance Manual

3.12 Selection Pads

The three touch-sensitive selection pads are: Up,
Down, and Alarm Silence. These pads are
labeled with symbols rather than words. See
Figure 3-3.
The Up and Down selection pads are located
below the digital display screen. Use them to
screen.
alarm which is emitted when an abnormal
condition is detected. The Alarm Silence pad is
also used to move through the various menus
present on the screen.
You will use the Down pad more often than the
Up pad. You do not need to press the Down pad
several times to progress through the scrsens.
Press and hold the Down pad, and the available
screens will be displayed in the Down sequence.
Figure b3. Display Screen and Selection

3.1.3 Power Status Diagram

diagram with two LEDs to indicate flow of
power from left (Input) to right (Output). Each
LED is energized by a circuit connected to an
AC power lead, and indicates that power is
present (Input or Output). The Maintenance
Line is represented by a yellow line; the
Bypass
UPS Module path is represented by a green line.
The Maintenance Bypass Line is a hard-wired
provides no line conditioning or power
protection. The Maintenance Bypass Line is
represented by a yellow line that extends
around the UPS. Note that the yellow
Maintenance Bypass Line matches the Rotary
Switch positions 1,2, and 3 which are also
colored ye&w. This indicates that the load is
receiving power through the Maintenance
Bypass Line whenever the Rotary Switch is in
position 1,2, or 3. Both power LEDs are on.
When the Rotary Switch is in position 4 (green
for Normal Operation), both LEDs are on
whether the load is receiving conditioned power
the Static Bypass Line. When the battery
supports the load duing an input power failure,
the Input LED is off while the Output LED is
on.
Figure 3-4. Power Status Diagram
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