Smoke Detector Limitations; Taking Care Of The Smd-426 Or Smd-427; Battery Replacement; Maintenance - Visonic KF-234 PG2 Accessories Manual

SMD-426, SMD-427

8. SMOKE DETECTOR LIMITATIONS

A. This smoke detector is designed for use in a single residential unit or offices, which means that it should be
used inside a single family home or apartment or office.
B. Please refer to NFPA 101, the Life Safety Code, NFPA72 for smoke detector requirements for fire protection in
buildings not defined as "households".
C. The smoke detector will not sense a fire if the smoke does not reach the sensor. In order for a smoke
detector to sense smoke, it must be installed in the immediate vicinity of the fire.
In addition, smoke from fires in chimneys, in walls, on roofs, in remote parts of the building, or on another level from
where the smoke detector is located, may not reach the smoke detector quickly enough for occupants to escape
unharmed. For this reason, installer shall install smoke detectors on every level, in every sleeping area and in
every bedroom of the household.
D. Smoke detector may not be heard. The alarm horn in this smoke detector meets or exceeds current
Underwriter's Laboratories standards. However, if the smoke detector is not located in the same room as the
occupant or if it is blocked by a closed door or normal noise, the alarm horn may not be heard. In addition, sound
sleepers, or persons who are under the influence of drugs or alcohol may not hear the alarm or be able to react
to it. Therefore, locate this smoke detector, which has a sounder rated at 85 dB at 10 feet, on every level,
in every sleeping area and in every bedroom of the household.
E. This detector, if used as a stand-alone unit, will not alert people who are hard of hearing.
F. In general, detectors may not always warn you about fires caused by carelessness and safety hazards like
smoking in bed, violent explosions, escaping gas, improper storage of flammable materials, overloaded electrical
circuits, children playing with matches or arson.
G Smoke detectors are not fool-proof. Like all electronic devices, smoke detectors have limitations. No
type of smoke detector can sense every kind of fire every time. In addition, smoke from slow,
smoldering fires rises slowly and may not reach the smoke detector until actual flame breaks out.
This type of smoke may not reach the smoke detector in time for occupants to escape unharmed.
H. Smoke detectors are not a substitute for life or property insurance. Though smoke detectors have been
responsible for saving many lives, they are not warranted or implied to protect lives or property in the event of fire.
I. These wireless systems are very reliable and are tested to high standards. However, due to their low transmitting
power and limited range (required by the regulatory authorities), there are some limitations to be considered:
i) Receivers may be blocked by radio signals on or near their operating frequencies, regardless of the code
selected.
ii) A receiver can only respond to one transmitted signal at a time.
iii) Wireless equipment should be tested regularly to determine whether there are sources of interference
and to protect against faults.

9. TAKING CARE OF THE SMD-426 or SMD-427

9.1 Battery Replacement

The SMD-426 and SMD-427 were designed to be as maintenance-free as possible. To keep the smoke detector in
good working order, you must test it weekly, as instructed in Para. 6.1 below.
Make it a rule to replace the detector's battery (lithium) once every 8 years even if there is no indication
that the battery is weak. Also be sure to replace it immediately upon reception of a low battery message via
your control panel.
If you disregard this message, an audible reminder in the form of once-per-minute "beep" will sound after a
few days. The low-battery "beep" should last at least 30 days before the battery dies out completely.
NOTE: For best performance, use only lithium batteries as replacement batteries (see specifications). Carbon
zinc batteries are not acceptable.
Replace the battery as follows:
A. Separate the detector from its bracket (see Figure 2).
B. Replace battery (see Figure 9a or Figure 9b according to the battery used).

9.2 Maintenance

It is necessary to maintain the detector frequently to ensure it working properly. Follow these tips for taking care of
your detector:
28 D-302758