Universal Security Instruments MPI305L - Manual (Page 6)

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.
NUISANCE ALARM SILENCE FEATURE: This feature is to be used only when a known alarm
condition, such as smoke from cooking, activates the smoke alarm. The smoke alarm Silence
Feature is activated by pushing and releasing the Silence button on the smoke alarm cover. The
smoke alarm will automatically reduce sensitivity and the red LED will blink on approx. every 2
seconds to indicate the alarm is in the Silence mode. The smoke alarm will gradually regain normal
sensitivity and sound the alarm if particles of combustion are still present. The 8-12 minute Silence
feature may be used repeatedly until the air has cleared, by pushing and releasing the Silence
button again. Resetting the smoke alarm after a nuisance alarm is recommended.
NOTE: If the Test button is pressed and held during the Silence mode, the smoke alarm will be
tested normally. Upon the release of the Test button, the Silence mode will be restarted.
Before using the alarm Silence Feature, identify the source of smoke and be certain that safe
conditions exist.
(UTHA) MAINTENANCE:
The smoke alarm is virtually maintenance free. However, under dusty conditions, a vacuum hose
may be used to clear the sensing chamber of dust.
Clean the smoke alarm at least once a month to remove dust, dirt, insects or debris. Always disconnect
the battery power to smoke alarm before cleaning. Using a soft brush or wand attachment to a vacuum
cleaner, vacuum all sides and cover of smoke alarm. Be sure all the vents are free of debris.
NEVER use an open flame of any kind to test this smoke alarm. You might accidentally
damage or set fire to the smoke alarm or to your home. The built-in test switch accurately
tests the smoke alarm's operation as required by Underwriters Laboratories Inc. (UL).
(UTHA) Sensitivity Indicating Means
The sensitivity indicating means for this Smoke and Fire Alarm is the use of the analyzer for Smoke
Detectors Model 501-A or 501-A/Bat Aerosol Generator Manufactured by Gemini Scientific Corp.,
1122-B Aster Ave., Sunnyvale, CA 94086.
The Equivalent UL 268 Light obscuration %/Ft as measured by this instrument must be within the
obscuration listed on the back of this alarm.
(UTHA) Go/No-Go Field Test
The Go/No-Go test for this smoke and fire alarm is to use one of the following UL listed can-type
aerosol smoke alarm testers. The instructions for use are printed on the canister. Home Safeguard,
Model 25S.
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TROUBLE/SERVICE ALARM: If the smoke alarm beeps 3 times approx. every 40 seconds after the
red LED flashes on and cannot be restored to normal operation, the smoke alarm should be replaced.
END-OF-SERVICE LIFE NOTIFICATION: A majority of home fire deaths are a result of no smoke
alarms or no working smoke alarms. In addition to the "replace by date" stamped on the back of your
alarm, your alarm contains a unique audible end-of-service life notification feature. When it is time
to replace your alarm, which is after approximately 10 years of operation from initial power up, the
alarm will sound 1 beep approx. every 60 seconds and the red LED will blink on once approx. every
40-45 seconds. The alarm should be replaced immediately.
The end-of-service life signal can be silenced for approximately 6 hours. To perform this function,
press and release the test button. The alarm will sound for approximately 60 seconds while it resets.
After the reset function is completed, the alarm will be silent for approximately 6 hours. The end-of-
service life signal will activate after the silence period.
OPTIONAL BATTERY DRAWER TAMPER LOCKING PIN: To make your battery drawer tamper
resistant, a locking pin has been provided (breakaway part on mounting bracket).
NOTE: If this feature has been activated, you will need to deactivate it by removing the battery
drawer tamper pin located at side of battery drawer. Refer to Page 4.
Pull the QUICK DRAW
(R) battery drawer open and remove the battery. While observing polarity,
push the replacement battery into the battery drawer until it is held securely in place. Carefully close
the battery drawer and reinstall the tamper pin.
Test the smoke alarm by pushing the TEST button on the smoke alarm cover until the alarm sounds,
then release.