Operational Summary - Universal Security Instruments MCN400 Manual

AUDIBLE & VISUAL SIGNALS
POWER
HORN GREEN LED
Silent On and Blinks
Off approx every
20 seconds
Silent Off and Blinks
On approx every
40 seconds
1 beep, Turns Off in
1 second sync with
pause, cycle of the
4 beeps first beep
4 beeps, Blinks Off when
5 second the Red LED
pause, blinks On
repeat
* See below
1 beep,
1 second
pause,
repeat
Horn sounds On and blinks
when no Off approx
hazard is every 20
present seconds
4 beeps, * See below
5 second
pause,
repeat
Silent * See below
* See below
Silent
Previous * See below
CO alarm or
Previous
Gas alarm
or both
1 chirp * See below
approx every
40 seconds
3 chirps * See below
approx every
40 seconds
2 chirps * See below
approx
every 20
seconds
* During 120 Volt Operation: On and Blinks Off approx every 20 seconds.
During 9 Volt (DC Backup) operation: Blinks On approx every 40 seconds

OPERATIONAL SUMMARY

GAS CO
BLUE LED RED LED
Off Off
Off Off
Blinks in Blinks in
sync with sync with
cycle of the cycle of
first beep 4 beeps
Blinks in
Off
sync with
cycle of
4 beeps
Blinks in Off
sync with
cycle of the
first beep
Blinks when Blinks when
no hazard is no hazard
present is present
Off
Blinks in
sync with
cycle of
4 beeps
Off Off and
blinks On
approx every
5 seconds
until reset
Off and
Off
blinks On
approx every
5 seconds
until reset
_ _
Off Off
Off Off
Off Off
Page 11
CONDITION / RECOMMENDATION
Condition: AC Power is present. DC power is present.
Recommendation: None, alarm is operating properly.
Condition: Alarm is powered by battery backup. AC Power
is not present.
Recommendation: Check the breaker or fuse box for power.
If the breaker or fuse box looks normal, call a licensed
electrician for assistance.
Condition: The TEST/CO SILENCE button has been
pressed and released. The test sequence lasts for
approximately 3 seconds after the button is released.
Recommendation: None.
Condition: CO alarm
Recommendation: If a hazard is identified, please take
all precautions when an alarm sounds by calling an
Emergency Service and getting out of the home.
Condition: Gas alarm.
Recommendation: If a hazard is identified, please take
all precautions when an alarm sounds by calling an
Emergency Service and getting out of the home.
Condition: Nuisance Alarm.
Recommendation: If there is no hazard present, verify the
alarm is mounted in the correct location (see User's
Manual, "AVOID THESE LOCATIONS" section). Reset
alarm as instructed below.
Condition: CO alarm when cause of alarm is known and
poses no threat.
Recommendation: The CO Alarm Silence Feature is
activated by pressing and releasing the TEST/CO
SILENCE button on the initiating alarm while in alarm
condition. The alarm will remain silent for approx 5
minutes, depending on the level of CO detected. If CO
levels drop below alarm levels, the alarm will remain silent
and return to normal operation. If CO levels remain
constant or increase, this indicates potentially dangerous
situation and the horn will sound again. Ventilate area.
Condition: Latching CO LED Indicator. The alarm has
previously detected CO and had alarmed.
Recommendation: Follow the reset instructions to remove
the latching LED.
Condition: Latching Gas LED Indicator. The alarm has
previously detected Gas and alarmed.
Recommendation: Follow the reset instructions to remove
the latching LED.
Condition: Alarm needs to be reset due to abnormal
operation/previous alarms.
Recommendation: Press the TEST/SILENCE or PEAK/
RESET button for approx. 10 seconds. The alarm will
chirp once to indicate the reset is now complete. Release
button. This will clear the alarm LED's and clear the
Silence mode.
MCND401 and MCND601 Series only: To reset the peak
CO memory, press and hold the PEAK/RESET button for
approx. 10 seconds until the peak level is cleared. The
alarm will chirp once to indicate the reset is now complete.
The display screen will display "000" when the peak CO
level is reset and then return to "- - -."
Condition: Low Battery
Recommendation: Check to make sure the battery
activation pull tab has been completely removed, battery
polarity is correct and the battery terminals are making
contact with the alarm contacts in the battery compartment.
If chirp continues, replace the 9V battery (see User's
Manual for recommended battery types).
Condition: Sensor Trouble/End-of-Life/Service Alarm.
Recommendation: Reset the alarm. If this does not clear
the problem, replace the alarm.
Condition: End-of-Service Life Alarm.
Recommendation: Replace the alarm.