BRK electronic 4120 AC - Manual (Page 16)

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Model 4120SB Only: During installation, if you
accidentally press the Silence button, the alarm will
“chirp” once a minute for up to 15 minutes and the
Test feature will be temporarily disabled. This is
normal. The “chirping” will stop once the alarm
returns to normal operation.
TESTING AND MAINTENANCE
WEEKLY TESTING
NEVER use an open flame of any kind to test this
unit. You might accidentally damage or set fire to
the unit or to your home. The built-in test switch
accurately tests the unit’s operation as required by
Underwriters Laboratories, Inc. (UL). If you choose
to use an aerosol smoke product to test the
smoke alarm, be certain to use one that has been
Listed to Underwriters Laboratories, Inc. Safety
Standards, and use it only as directed. Use of non-
UL Listed products or improper use of UL Listed
products may affect the Smoke Alarm’s sensitivity.
It is important to test this unit every week to make
sure it is working properly. Using the test button is
the recommended way to test this Smoke Alarm.
Press and hold the test button on the cover of the unit
until the alarm sounds (the unit may continue to alarm
for a few seconds after you release the button). If it
does not alarm, make sure the unit is receiving power
and test it again. If it still does not alarm, replace it
immediately. During testing, you will hear a loud,
repeating horn pattern:
3 beeps, pause, 3 beeps, pause.
When testing a series of interconnected units you
must test each unit individually. Make sure all units
alarm when each one is tested.
REGULAR MAINTENANCE
This unit has been designed to be as maintenance-
free as possible, but there are a few simple things you
must do to keep it working properly:
• Test it at least once a week.
• Gently vacuum off any dust on the cover at
least once a month using your vacuum’s soft
brush attachment. Test the unit after vacuuming
the cover.
• Never use water, cleaners or solvents since they
may damage the unit.
• Relocate the unit if it sounds frequent unwanted
alarms. See “Where Not To Install Smoke
Alarms” for details.
• Models 4120SB and 4120B Only: When the
battery back-up becomes weak, the Smoke
Alarm will “chirp” about once a minute (the low
battery warning). This warning should last 7
days, but you should replace the battery imme-
diately to continue your protection.
Models 4120SB and 4120B Only:
Choosing a replacement battery:
Your Smoke Alarm’s battery back-up requires one stan-
dard 9V battery. The following batteries are acceptable
as replacements. This list supplements the list on the
Smoke Alarm battery door: Eveready #216, #522
(Energizer), #1222; Duracell #MN1604, MX1604 (Ultra);
Gold Peak #1604P, #1604S; Rayovac 1604, D1604. You
may also use a Lithium battery like the Ultralife U9VL-J
for longer service life between battery changes. These
batteries are available at many local retail stores.