4.OPERATION AND TESTING
OPERATION: The smoke alarm is operating once a fresh battery is installed and testing
is complete. When products of combustion are sensed, the unit sounds a loud 85db
pulsating alarm until the air is cleared.
FLASHING LED LIGHT: This smoke alarm is equipped with a flashing red indicator light.
The light is located above the test button and will flash every 30-40 seconds to indicate
that the smoke alarm is operating.
SMOKE SENSING CHAMBER OPERATION: This alarm will “chirp” if any of the
components in the smoke sensing chamber fail. This chirp will occur between the
flashes of the red LED indicator light. (If the chirp occurs at the same time as the red
LED flash, see Section 6 for low battery information).
TESTING: Test by pushing the test button on the cover and holding it down for a
minimum of 5 seconds. This will sound the alarm if the electronic circuitry, horn and
battery are working. If no alarm sounds, the unit has defective batteries or other
failure.
TEST THE ALARM WEEKLY TO ENSURE PROPER OPERATION. Erratic or low sound
coming from your alarm may indicate a defective alarm that should be returned for
service (see Section 9).
NEVER USE AN OPEN FLAME OR COMBUSTIBLE MATERIALS TO TEST YOUR
ALARM, YOU COULD DAMAGE THE ALARM OR IGNITE NEARBY MATERIALS
AND START A STRUCTURE FIRE.
Smoke alarms are designed to minimize nuisance alarms. Cigarette smoke will not
normally set off the alarm, unless the smoke is blown directly into the alarm.
Combustion particles from cooking may set off the alarm if the alarm is located close
to the cooking area. Large quantities of combustible particles are generated from spills
or when broiling. Using the fan on a range hood which vents to the outside (non-
recirculating type) will also help remove these combustible products from the kitchen.
Model 29HD has a HUSH® control that is extremely useful in a kitchen area or other
areas prone to nuisance alarms. For more information refer to Section 5, Hush Control
Feature.
If the alarm does sound, check for fires first. If a fire is discovered, get out of the
building and call the fire department. If no fire is present, check to see if one of the
reasons listed in Section 2 may have caused the alarm.
5. HUSH® CONTROL FEATURE
Model 29HD: The Hush® button is extremely useful in a kitchen area or other areas
prone to nuisance alarms. The Hush® feature has the capability of temporarily
desensitizing the smoke alarm circuit for about 10 minutes. This feature should only be
used when a known alarm condition, such as smoke from cooking, activates the alarm.
If the alarm does sound, check for fires first. If a fire is discovered, get out and call the
fire department. If no fire is present, check to see if one of the reasons listed in Locations
to Avoid may have caused the alarm. The smoke alarm is desensitized by pushing the
Hush® button on the smoke alarm cover. If the smoke is not too dense, the alarm will
silence immediately and “chirp” every 30-40 seconds for approximately 10 minutes.
This indicates that the alarm is in a temporarily desensitized condition. The smoke alarm
will automatically reset after approximately 10 minutes. If after this period particles of
combustion are still present, the alarm will sound again. The Hush® feature can be used
repeatedly until the air has been cleared of the condition causing the alarm. Pushing the
Test button on the alarm will end the Hush® period.
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