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8. FUNCTIONS AND OPERATION
OPERATION:
The CO alarm is operational once the activation switch is slid to ON
position. The green LED will flash once every 60 seconds. The model CA6150 LCD
will also continuously display
to indicate that the CO alarm’s power is active.
LOW BATTERY CONDITION:
When the battery voltage drops below an acceptable
level, the alarm will chirp once per minute and the green LED will blink 5 seconds every
minute. The model CA6150 LCD will also display
symbol. See Section 13 for
information regarding service.
SERVICE CONDITION:
An internal microcontroller continuously monitors the sensor
function and other critical components. If an internal failure of any of these components
should occur, the alarm will chirp twice (
BEEP - BEEP
) per minute and the
SERVICE
red
LED will blink for 5 seconds every minute. The model CA6150 LCD will also
continuously display
. This malfunction condition indicates a problem with the unit.
See Section 13 for information regarding service.
END-OF-LIFE CONDITION:
The electrochemical sensor has a ten year life
expectancy. Once the batteries are activated, a microcontroller monitors the total time
that the alarm is under power. After ten years of service, the “End-of-Life” signal will be
activated; the alarm will chirp once per minute and the
SERVICE
red LED will glow for 3
seconds at the same time. The model CA6150 LCD will also continuously display
to indicate that the sensor life has expired and the alarm should be replaced. See
Section 13 for handling an End-of-Life alarm.
ALARM CONDITION:
When the batteries are active, and CO gas is detected at a level
and duration specified in Section 3
CO RESPONSE TIMES
, the horn will sound and the
ALARM
red LED will light. The alarm signal will sound 4 short beeps every 6 seconds.
The
ALARM
red LED will flash in sync with the beeping sound. The model CA6150 LCD
will also display the current CO Level detected. After having alarmed for more than 5
minutes, the alarm signal will change to 4 short beeps every 60 seconds. The alarm
signal is either manually or automatically reset. See Section 10
WHAT TO DO WHEN
THE ALARM SOUNDS
.
TEST/RESET/MUTE
BUTTON:
The
TEST/RESET/MUTE
button is used to check the
alarm for proper operation, and to temporarily mute horn for 5 minutes when alarm is
activated, for 24 hrs. during the first week of a “Low Battery Voltage” signal (
)
activation, or for 60 hrs. during the first month of an “End-of-Life” signal (
)
activation. The model CA6150 LCD will display the current CO level detected when
alarm is being tested, or
when an alarm signal is muted. See Section 9 for detailed
instructions to test the alarm and mute the audible horn.
LCD DISPLAY FUNCTION (FOR MODEL CA6150):
When alarm is operating
normally, the LCD will continuously display
. If room temperature exceeds 120°F,
the LCD will display
for 5 seconds every minute. If a CO level of 30 ppm or more
is detected, or alarm is activated, the LCD will automatically display the current CO level
detected. The LCD will display the
symbol if the batteries have low voltage.
