TITANUS
MICRO·SENS
®
Commissioning
06/13
183
? Blow through fan
The operating voltage for the blow through fan should if possible be kept at
13.5 V for location. It can be changed as follows for special applications:
Operating Status Voltage (V)
- for an optimum (short) blow through time 13.5 V
- for longer blow through times
- for lower voltage drops with smaller cable
cross-sections
9.0 - 13.4 V
The value selected is stored permanently in the TITANUS
MICRO·SENS
®
and used for each location procedure.
NOTICE
Under certain circumstance the blow through time may not be sufficient to
blow through the pipe, if too low a blow through ventilator voltage was se-
lected. This can cause a false fire site to be displayed.
? Aspiration fan help
The operating voltage for the aspiration fan must be selected so that a time
difference of about 2 to 4 seconds between two neighbouring aspiration ap-
ertures is not undercut. If the time differences are too short, then when there
is an alarm, a false fire location may be displayed. As the air flow between
aperture A and B is the highest, then with a normal design this has the
shortest time.
The following table contains guideline figures for setting the operating volt-
age:
Distance A - B (m) max. Voltage (V)
3 9,0
4 9,8
5 10,7
6 11,5
7 12,4
from 8 m 13,2
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