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button is released. Pressing the
test button simulates the effect of
smoke or heat during a real fire
and is the best way to ensure the
Alarm is operating correctly.
WARNING: DO NOT TEST WITH
FLAME.
This can set fire to the Alarm and
Figure 2
damage the house.
We do not recommend testing with smoke or heat as the
results can be misleading unless special apparatus is used.
Pressing and releasing the test/hush button on an optical
alarm (Ei156TLH) puts it into hush mode. The smoke
sensitivity is reduced and the red light flashes every 10
seconds (instead of every 40 seconds). The optical alarm
automatically resets to normal sensitivity after 10 minutes (If
an alarm is going to be checked with smoke in a suitable
apparatus, the test/hush button must not be pressed
beforehand as this makes the unit insensitive for 10 minutes.
(iii) Check for any sign of contamination such as cobwebs or
dust and clean the alarm as described below if necessary.
Interconnected Alarms
Test the first unit by pressing the button for 10 seconds. All the
detectors should alarm within about 5 seconds of the first horn
sounding and the red light on the first unit only will flash about
once a second. Check all the other units similarly.
(Note: Ionisation and Heat Alarms signal to other
interconnected alarms about 4 seconds after their own horn
sounds. Optical alarms signal within about a second).
CHECKING RECHARGEABLE CELLS
1. When the alarm is beeping
The Alarm automatically monitors the cells every 40 seconds
to ensure they are satisfactory. If a problem is identified it will
give a short beep every 40 seconds. If the unit is giving beeps
then check the following:
(i) Check that the green mains power light is on. If it is off the
Alarm has been powered from the cells and the beeps
indicate they are depleted. Re-connect the mains, check fuse,
circuit breakers and wiring. If in doubt contact a qualified
electrician. The beeps should cease within 2 hours as the
cells charge up.
(ii) Check that the hush button has not been pressed
inadvertently (Ei151TL only). This also causes beeps every
3
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