SMD-426, SMD-427
10
D-302758
•
In close proximity to an automobile exhaust pipe; this will
damage the detector.
•
In damp or very humid areas or near bathrooms with
showers. Moisture in humid air can enter the sensing
chamber, then turns into droplets upon cooling, which
can cause false alarms. Install smoke detectors at least
3 meters (10 feet) away from bathrooms.
•
In very cold or very hot areas, including unheated
buildings or outdoor rooms. If the temperature goes
above or below the operating range of smoke detector, it
will not work properly. Verify that the temperature range
of the detector falls within the Operating Temperature,
(see chapter 2. Specifications).
•
In very dusty or dirty areas, dirt and dust can build up on
the detector's sensing chamber, to make it overly
sensitive.
•
Additionally, dust or dirt can block openings to the
sensing chamber and keep the detector from sensing
smoke.
•
Near fresh air vents or very drafty areas like air
conditioners, heaters or fans. Fresh air vents and drafts
can drive smoke away from smoke detectors.
•
Dead air spaces are often at the top of a peaked roof, or
in the corners between ceilings and walls. Dead air may
prevent smoke from reaching a detector. See Figures 8
and 9 for recommended mounting locations.
•
In insect-infested areas. If insects enter a detector's
sensing chamber, they may cause a false alarm. Where
bugs are a problem, get rid of them before putting up a
detector.
•
Near fluorescent lights, electrical "noise" from
fluorescent lights may cause false alarms. Install smoke
detectors at least 1.5 meters (5 feet) from such lights.
•
Smoke detection depends on the smoke density
present in a room. Smoke density is greater in small
rooms, for the same amount of smoke, than in large
rooms.
In small rooms less than 25 cubic meters (883 cubic
ft.) in size, a small amount of smoke may activate a
smoke alert. For example, smoking or bathroom
steam may activate a smoke alert.
Figure 10.
Recommended Smoke Detector Locations to
Avoid Air Streams with Combustion Particles
WARNING:
Never remove batteries to stop a false alarm.
Open a window or fan the air around the detector to get rid
of the smoke. The alarm will turn itself off when the smoke
is gone. If false alarms persist, attempt to clean the detector
as described in this manual.
WARNING:
Do not stand close to the detector when the
alarm is sounding. The alarm is loud in order to wake you
in an emergency. Too much exposure to the horn at close
range may be harmful to your hearing.
3.4 Audible and Visual Indications
The dual color LED and buzzer are used to signal various
alarm and trouble messages as shown in Table 1 below:
Table 1.
Visual and Audible Indications
Visual Indication (LEDs)
Condition
Red Yellow
Audio
Indication
Smoke alarm Flash every
500ms
-
3 long beeps
every 4 sec.
Heat
alarm(***)
Flash every
500ms
- Long
beep
every 2 sec.
Tamper
alarm(*)
- -
Long
beep
every 2 sec.
Standby
Flash every
30 sec.
- -
Low battery Flash every
30 sec.
- Short
beep
every 30 sec.
Smoke
sensor
trouble
Flash every
60 sec.
3 Flashes
every 60 sec.
Short beep
every 60 sec.
Low
sensitivity
alarm
Flash every
30 sec.(**)
- Short
beep
every 30 sec.
Heat sensor
trouble(***)
Flash every
60 sec.
5 Flashes
every 60 sec.
Short beep
every 60 sec.
Need to
clean
2 flashes
every 30 sec.
-
2 short beeps
every 30 sec.
Test
See par. 6.1
* The tamper alarm will mute for 3 minutes at first power
on, and will revert to normal mode when the tamper
switch condition is changed.
** Delay of 15 sec. between buzzer beep and LED
operation
*** SMD-427 only
3.5 Battery Connection and Initial Test
Attention:
The detector battery cover is fitted with a red
button that prevents the detector from locking onto bracket
if there is no battery inside.
The smoke detector is supplied with a 3V CR123A /
CR17450 battery. Battery connection for both types of
batteries is illustrated in Figure 3a and 3b below.
Battery cover
Open battery cover and
connect the battery to its
t e r m i n a l s ( w i t h o u t
insulator). Verify proper
polarity.
3 volts CR123A
Tamper
switch
Enrol
button
Figure 3a.
Battery Connection for CR123A
