background image

Page 6

IMPORTANT!

The battery backup is designed to provide short-term emergency power to the CO and Gas Alarm.
Actual backup time depends on the strength (freshness) of the battery. The battery backup will not
work unless a good battery is properly installed.

When the alarm utilizes battery backup power, the natural gas sensor will operate the alarm and will
sample less frequently to extend battery life. Natural gas could be present during this period between
samples without the alarm sounding, especially if there is a rapid buildup of natural gas.

UNDERSTANDING YOUR ALARM

NORMAL  OPERATION:

 In normal operation, the alarm will blink the green LED off once

approximately every 20 seconds. On Models MCND401, MCND401L, MCND601 and MCND601L,
the screen will display three dashes "- - -"

LOW BATTERY ALARM:

 If the alarm chirps once approx. every 40 seconds, please verify that the

battery activation pull tab has been completely removed, the battery polarity is correct and the
battery terminals are making contact with the alarm contacts in the battery compartment. If the
battery continues to chirp, replace the 9 volt battery.

CO ALARM:

 The alarm signal is 4 beeps, 5 second pause, repeat. The green LED turns off when

the 4 beeps start. The red LED blinks in sync with the cycle of 4 beeps. The screen will indicate the
current CO readings if higher than 40 ppm on digital display models.

GAS ALARM:

 The alarm signal is 1 beep, 1 second pause, repeat. The green LED turns off. The

blue LED blinks in sync with the horn beep every second.  The screen will display "gas" on digital
display models.

NUISANCE ALARM:

 If the horn signals for no apparent reason and no obvious hazard is present,

please verify that the alarm is mounted in the correct location. Reset the alarm as instructed in the
Operational Summary.

CO ALARM LATCHING LED INDICATOR:

 The alarm had previously detected CO and had alarmed.

The red LED is off and blinks on approx. every 5 seconds until reset. Follow the reset instructions
to remove the latching LED (see below).

GAS ALARM LATCHING LED INDICATOR

: The alarm had previously detected gas and had

alarmed. The blue LED is off and blinks on approx. every 5 seconds until reset. Follow the reset
instructions to remove the latching LED (see below).

TROUBLE / SERVICE ALARM:

 Periodically, the alarm measurement circuit is tested. If an error

is detected, the alarm will sound 3 chirps approx. every 40 seconds. Replace the alarm.

END-OF-SERVICE LIFE ALARM:

 When it is time to replace your alarm, which is in approximately

7 years of operation from initial power up, the alarm will sound 2 chirps approx. in 20 seconds. The
alarm signal cannot be reset - the alarm should be replaced immediately.

RESET THE ALARM LED's:

 Press the TEST/RESET or PEAK/RESET button for 10 seconds and

then release. The alarm will chirp once to indicate the reset is now complete. This will clear the
alarm LED's and clear the SILENCE mode.

RESET THE PEAK CO MEMORY

 (digital display models only)

:

 Press and hold the PEAK/RESET

button for 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 "- - -"

IF YOUR CO AND GAS ALARM SOUNDS

WHAT TO DO IF CARBON MONOXIDE IS DETECTED:

If you hear the alarm horn sound 4 beeps, a 5 second pause (and then repeat),

carbon monoxide has been detected. Evacuate everyone from the building.

Actuation of your CO Alarm indicates the presence of carbon monoxide (CO), which can kill you. In
other words, when your CO Alarm sounds, you must not ignore it!

Some individuals are more sensitive to CO than others, including people with cardiac or respiratory
problems, infants, unborn babies, pregnant mothers or elderly people can be more quickly and
severely affected by CO. Members of sensitive populations should consult their doctors for advice
on taking additional precautions.

Summary of Contents for MCN400

Page 1: ...t Levels of CO Cause anAlarm 2 Basic Safety Information 3 Recommended Location ofAlarms 4 Avoid These Locations 4 How to Install 5 Reset Feature 6 Operation Alarm Characteristics 6 What To Do If The A...

Page 2: ...MINUTES This product is intended for use in ordinary indoor locations of family living units It is not designed to measure compliance with Occupational Safety and HealthAdministration OSHA commercial...

Page 3: ...er gas Carbon monoxide and natural gas may be present in other areas The CO and Natural Gas Alarm will only indicate the presence of CO or natural gas which reaches the sensor The CO and Natural Gas A...

Page 4: ...n particles stove furnace water heater space heater if possible In areas where a 20 foot 6m distance is not possible in modular mobile or smaller homes for example it is recommended the alarm be place...

Page 5: ...which will be used as a gathering place if the alarm sounds Page 5 READ CAREFULLY THIS UNIT IS SEALED THE ALARM COVER IS NOT REMOVABLE Leave your CO and Gas Alarm plugged in year round CO and gas pro...

Page 6: ...ously detected CO and had alarmed The red LED is off and blinks on approx every 5 seconds until reset Follow the reset instructions to remove the latching LED see below GAS ALARM LATCHING LED INDICATO...

Page 7: ...n return to normal operation It will continue to monitor the air for CO Ventilate area After up to 5 minutes depending on the level of CO detected if CO levels remain potentially dangerous the horn wi...

Page 8: ...memory reading is cleared The alarm will chirp once to indicate the reset is now complete The screen will temporarily display 000 when the peak CO level is reset and then return to after several seco...

Page 9: ...install smoke alarms even though carbon monoxide can be generated by a fire CO and Gas Alarms are not a substitute for property disability life or other insurance of any kind Appropriate coverage is y...

Page 10: ...nies and HVAC companies offer appliance inspections for a nominal fee Make regular visual inspections of all fuel burning appliances Check appliances for excessive rust and scaling Also check the flam...

Page 11: ...lete MCND401 and MCND601 Series only To reset the peak CO memory press and hold the PEAK RESET button for 10 seconds until the peak level is cleared The alarm will chirp once to indicate the reset is...

Page 12: ...of this Warranty contact Customer Service at 1 800 390 4321 Ext 238 for current postage and handling fees USI DOES NOT WARRANT AND SPECIFICALLY DISCLAIMS ANY WARRANTY WHETHER EXPRESS OR IMPLIED OF FI...

Reviews: