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Sensitivity adjustment
If you need to make a sensitivity
adjustment use a narrow electrical
flat-headed screwdriver.
Note: The adjustment screw is limited
in both directions. Once you can
feel resistance stop turning to avoid
damage to the unit.
How to carry out a sensitivity
adjustment:
1. Carefully insert the screwdriver into
the hole on the back of the unit.
2. Turn clockwise no more than
5 degrees (a small adjustment is
equivalent to a large alteration in
sensitivity).
3. Carry out a fire alarm test.
(See page 5)
Note: Do not over-adjust the
sensitivity as this may stop the unit
from responding to the alarm correctly.
If the Deafgard is too sensitive to sound,
you can follow the same steps, but turn
the screwdriver anti-clockwise.
Do not over-adjust the sensitivity as
this may stop the unit from responding
to the alarm correctly.
Page 10
Note: Deafgard is factory set to be
triggered by a fire alarm at a sound level
of 75 decibels, which is recommended
in Fire Safety Legislation
(BS5839-1:2017).
Deafgard can be adjusted to respond to
alarms as quiet as 70 decibels.
Only adjust sensitivity as a last resort
if the unit is not working correctly.
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