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NORMAL OPERATION
In normal operation, the alarm will blink the green LED off once approximately every
20 seconds.
SERVICE/TROUBLE CONDITION
Periodically, the alarm's measurement circuit is tested. If an error is detected, the
alarm will sound a double "beep" and the yellow LED will flash on twice approximately
every 40 seconds. This is an indication of circuit malfunction and that the alarm required
immediate servicing.
When AC power is lost, the green LED is off and flashes on approximately every 60
seconds.
MAINTENANCE
BATTERY REPLACEMENT (Model USI-7390 only)
The CO alarm is powered (backup) by a 9V battery. A fresh battery should last for one
year under normal operating conditions. This alarm has a low battery monitor circuit
which will cause the alarm to sound a short "beep" approximately every 40 seconds,
for a minimum of 7 days, when the battery gets low. Replace the battery when this
condition occurs, by using the QUICK DRAW
TM
pull-out battery drawer for easy
replacement.
Slide the QUICK DRAW
TM
pull-out battery drawer out. While observing polarity, push
the replacement battery into the battery drawer until it is held securely in place. Carefully
close and latch the QUICK DRAW
TM
pull-out battery drawer.
USE ONLY THE FOLLOWING 9 VOLT BATTERIES FOR CO ALARM
REPLACEMENT
Alkaline type:
EVEREADY 522; DURACELL MN1604
Lithium type:
ULTRALIFE U9VL-J
NOTE: REGULAR TESTING IS RECOMMENDED.
USE ONLY THE BATTERIES SPECIFIED. USE OF DIFFERENT BATTERIES MAY
HAVE A DETRIMENTAL EFFECT ON THE CO ALARM. THE CONSTANT
EXPOSURES TO HIGH OR LOW TEMPERATURES OR HIGH HUMIDITY MAY
REDUCE BATTERY LIFE.
CLEANING YOUR ALARM
To clean your alarm, remove it from the mounting plate as outlined in the beginning of
this section.
You can clean the interior of your alarm by using your vacuum cleaner hose and
vacuuming through the openings around the perimeter of the alarm.
The outside can be wiped with a damp cloth. Do not use any household cleaning
agents, ammonia based cleaners, paints, varnishes or any other chemical on or near
your alarm.
AFTER CLEANING, REINSTALL YOUR ALARM. TEST YOUR ALARM
BY USING THE TEST BUTTON.
Disconnect AC power before changing battery. Shock hazard exists if AC power
is miswired.
