Lights
Red Alarm Light
The red light flashing, accompanied
by the alarm “chirp”, indicates the
batteries need to be replaced, or the
unit has malfunctioned (see figure 15).
Rapid pulsing of the alarm indicates
the presence of carbon monoxide.
Refer to pages 18-19 for instructions on What to do if the
Alarm Sounds.
Green Operate Light
The green light indicates the unit is
functioning properly (see figure 16).
The green light will flash every 30
seconds indicating a CO reading is
being taken and when any button is
pressed.
Battery Life Indicator (Fuel Gauge)
The battery icon appears in the lower left hand corner of the CO
Alarm display and indicates remaining battery life.
The display is divided into three segments and will accurately
display:
1. Full Battery
- All three segments of the indicator
are black.
2. 2/3 Battery Full
- Two of the three segments are
black.
3. 1/3 Battery Full
- One of the three segments is
black.
4. Empty Battery
- See Battery Installation/Replacement
Instructions pages 16-17.
14
Features and Operation
(cont.)
Peak
Level
Alarm
Test/
Reset
Operate
Figure 16
Figure 15
Test/Reset Button
The test/reset button is used to test the unit’s electronics and to
reset the unit during alarm.
Test the unit
To test, press the test/reset button (see figure 14)
Test the unit weekly!
Note: After the test/reset button is pressed, numbers
appear on the display. These are not CO readings and are
part of the internal testing process. Ignore these numbers!
After pressing the test/reset button,
the unit will display then other
numbers and then return to
monitoring CO levels.
Due to the loudness of the alarm we
suggest you place your fingers over the
sounder opening when testing your Nighthawk CO Alarm.
Familiarise yourself and family members with the alarm pattern.
A CO Alarm is rapid pulsing. This cycle will repeat in the event
of a CO alarm. This cycle will continue for the first 4 minutes of
a CO alarm and then change to one cycle every one minute until
the device is reset or the CO is eliminated.
Reset
If the alarm is sounding, pressing the test/reset button will
terminate the alarm. If the CO condition that caused the alert in
the first place continues, the alarm will reactivate. If the CO alarm
alarms again within six minutes, it is sensing high levels of CO
which can quickly become a dangerous situation.
If this happens follow What To Do If The Alarm Sounds on pages
18-19. Reactivation times depend on the amount of CO that
caused the CO alarm to initially alarm and the amount of CO
present after resetting the alarm.
13
Features and Operation
(cont.)
Test/
Reset
P
Operate
Figure 14
Benelux Guide 21/8/01 2:15 pm Page 13
