User`s guide

4-30 Display Terminals
Acknowledging Alarms
Note: When an alarm occurs, the red LED above the Alarm symbol
on the keypad begins to flash, and if enabled, an intermittent
beep tone begins to sound. (In the DX LCD Display,
Version 3, DT-9100-8104, the alarm contacts are also
activated.) These indicate an unacknowledged alarm. The
Alarm and Total fields at the bottom of the display also
change to show the new alarm.
To acknowledge the alarm (silence the beep tone and stop the LED
from flashing):
1. Press any key from any screen to acknowledge the alarm. This
acknowledges all alarms if more than one has occurred since the
last time alarms were acknowledged.
2. In order to ensure that you are alerted to alarms, you must still
acknowledge an alarm even if it has returned to normal in the
meantime. Check the Alarm Log for a history of alarms.
Viewing the Alarm Log
To view the Alarm Log:
1. Select the Alarm Log option in the Main menu. The first of up to
24 Alarm Log screens appears, as shown in Figure 4-20.
FLOOR 8 AHU ALARM LOG 1/24
11:40
May 02 1997
NOR Room Temperature 23.9 Deg C 17:05
NOR Chiller1 Thermal Normal 16:10
HA Room Temperature 24.5 Deg C 15:57
ALM Chiller1 Thermal Alarm 14:22
May 01 1997
Power Restored 14:24
Power Failure 13:52
Apr 30 1997
ALM Humidifier S/S Fault
New DX Controller 14:00
Config Nr=50000 N2 Addr=100
Figure 4-20: Alarm Log Screen