Siemens XC1001-A Operation - Seite 15
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3.2
Blocking functions
Building Technologies
Fire Safety
system can be reset only after completion of the flooding time. The flooding time
can be set to between 10s to 30mn.
The fire control (shut off air conditioning, smoke protection flaps and doors to the
extinguishing area) is triggered as a rule in the case of "Fire alarm" or at the start of
activated time. After resetting the system, the fire control will be enabled again. As
soon as extinguishing is finished, an authorized person can reset the building
systems to normal mode again.
The extinguishing control unit can be equipped with different blocking devices as
described below:
Emergency hold button
The Emergency Hold Button is used for temporary stopping the extinguishing
initiated, during the pre-warning time. During that time, people can evacuate the
room to be flooded. When the Hold Button is pressed, the pre-warning time is
suspended and the alarm sounder(s) changes its tonality. When the Hold Button is
released, the pre-warning time is restarted.
When not in pre-warning time, as a rule, the Hold Button is inoperable.
Emergency abort button
The Emergency Abort Button is used for canceling the initiated extinguishing
during the pre-warning time. During the pre-warning time, pressing the Abort
Button cancels the initiated extinguishing and the alarm horn changes its tonality.
The system remains in this operating state until reset. After reset, the system
remains blocked until the mechanical locking of the Abort Button is cleared by an
authorized person.
When not in pre-warning time, the Abort Button is used for blocking the automatic
and manual activation of extinguishing.
Mechanical blocking device
The mechanical blocking device is used for blocking the activation of extinguishing
during maintenance work. As a rule it is used in CO
cannot be influenced by the extinguishing control unit. The mechanical blocking
device can be set to "closed" or "open" mostly by turning a lever. The "closed"
position is shown on the extinguishing control unit. If the mechanical blocking
device is in neither the "closed" nor the "open" position, the extinguishing control
unit reports a "Fault" of the mechanical blocking device.
Door contact(s)
The door latch contact is used for blocking the activation of extinguishing in case of
maintenance work. This blocking option is used as a rule in unattended
extinguishing areas. As soon as the door to the extinguishing area is unlocked, the
automatic activation of extinguishing is blocked; the manual activation, however,
remains active. This blocking option is generally used in electrical equipment
cabinet or object protection.
Extinguishing system overview
-extinguishing systems and
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