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6. Alarms
Sometimes Fortress detects a problem and warns you about it by sounding an alarm. When this
happens, the UPS lights the red (Alarm) light, flashes a two-letter alarm
message on the display, and sounds a Morse code alarm.
6A. Silencing Alarms
To silence an alarm, press the bottom (arrow) key on the front
panel. The Morse-code alarm will stop, and the display will
show “Sh” for a short time. The red Alarm light will stop
blinking, but it will stay on unless you have solved the
problem that caused the alarm. The display will still show the
alarm message. Remember: Silencing the alarm does not
solve the problem that caused it. Go on to find out how to
react to the alarm.
If the alarm is still active and you would like to hear the alarm again, press the bottom key again.
The display will show “Un” for “unsilence,” and the unit will begin sounding the Morse Code
for the alarm.
6B. Reacting to Alarms
The UPS display switches between the normal display and an alarm message. Go to the Alarm
Table on the next few pages and find your alarm message in the left column. Follow the
instructions for that alarm. The UPS also sounds the alarm letter code in Morse Code; if you are
not near the UPS, you can use the Morse code and the table on the next few pages to identify the
alarm.
Example: If the display shows “OL” as shown, read the information next to “OL” in the Alarm
Table. The table shows that this is an overload alarm, and you must disconnect some of
the equipment plugged into your UPS.
Press this
key to
silence
alarms.
OL