Siemens XC1003-A Instruction Manual

Building Technologies
Fire Safety & Security Products
XC1003-A
Extinguishing control unit
Operation

Liefermöglichkeiten und technische Änderungen vorbehalten.
Data and design subject to change without notice. / Supply subject to availability.
Sous réserve de modifications techniques et de la disponibilité.
© 2008 Copyright by
Siemens Switzerland Ltd
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1 About this document..............................................................................5
2 Safety regulations...................................................................................6
2.1 Danger levels ............................................................................................6
2.2 Safety-relevant operating instructions.......................................................6
3 System overview.....................................................................................8
3.1 Configuration of the system ....................................................................10
4 Structure and function .........................................................................11
4.1 Indicators and operating elements..........................................................11
4.2 Function ..................................................................................................13
4.2.1 Access levels ..........................................................................................13
4.2.2 Typical extinguishing process.................................................................13
4.2.3 Blocking functions...................................................................................14
4.2.4 Faults ......................................................................................................15
4.2.5 Maintenance options...............................................................................15
5 Operation ...............................................................................................16
5.1 Normal operation.....................................................................................16
5.2 Enabling access level 2 ..........................................................................17
5.3 Activation of extinguishing ......................................................................17
5.4 Disabling system part..............................................................................19
5.4.1 Disabling detector zones.........................................................................19
5.4.2 Disabling alarm Horn, releasing element and fire controls.....................20
5.4.3 Blocking remote transmission of activation of extinguishing and fault....21
6 Maintenance ..........................................................................................22
6.1 Checking all optical and acoustic elements of the control unit ...............22
6.2 Testing the alarm horn............................................................................22
6.3 Testing illuminated warning panel...........................................................23
6.4 Checking all fire detectors.......................................................................23
6.5 Checking the remote transmission of alarm ...........................................24
7 Troubleshooting....................................................................................25
8 Disposal and environmental protection .............................................26
8.1 Unit disposal............................................................................................26

About this document
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1 About this document
Objective and purpose
This document describes the operation of the XC1003-A extinguishing control unit.
By consistently following the instructions correct reliable use is ensured.
Area of application
The information contained in this document is valid as of hardware/software
version 2.7.
Target group
This document and the instructions contained herein are intended for persons, who
operate the extinguishing control unit.
Brief description of chapter contents
Chapter Content overview
1. About this document General information on documentation and notes on the target
group, for which the document was created.
2. Safety regulations Describes the danger levels and safety regulations that are of
significance to the operation of the extinguishing control unit.
3. System overview Describes the basic structure of an extinguishing control unit.
4. Structure and function Describes the functions of the control unit with regard to
operation.
5. Operation Describes the operating steps in the event of extraordinary
situations.
6. Maintenance Describes the recommended maintenance work.
7. Trouble shooting Provides information on how to proceed in the event of faults.
8. Disposal and environmental
protection General notes on disposal.
Standard symbols

Result, Note
' ' Quotation, reproduced identically
(...) Parentheses contain supplementary text, suggestions, etc.
Index of changes
Version Date Brief description
A6V10099835_a_en 12.2007 First issue

Safety regulations
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2 Safety regulations
This chapter describes the danger levels and the safety regulations that are of
significance to the use of Siemens Fire Safety & Security Products. Please read
the operating instructions in this product documentation and especially in this
chapter prior to any activity.
2.1 Danger levels
The following signal words indicate danger levels; that is, the severity and
probability of a hazard and its consequences.
DANGER Imminent danger!
 Severe physical injury or death.
WARNING Possible dangerous situation
 Severe physical injury or death.
CAUTION Possible dangerous situation
 Slight physical injury or property damage.
NOTE Important information that requires special attention.
2.2 Safety-relevant operating instructions
Country-specific standards
The products are developed and produced in accordance with the relevant
international and European safety standards. If additional country-specific, local
safety standards or statutes apply to planning, mounting, installation, operation and
disposal of the product at the locale of operation, then any such standards or
statutes shall be observed in addition to those safety prescriptions in the product
documentation.
Non-compliance with safety regulations
The products are designed for proper use and have been tested for correct
function prior to delivery. We accept no liability for personal injury or property
damage occurring as the result of abuse or by noncompliance with the instructions
or danger notices listed in the documentation. This applies especially to:
 Personal injury or property damage that occurs as the result of inappropriate use
and incorrect use.
 Personal injuries or property damage that occurs as the result of non-
compliance with safety-relevant information in the documentation or on the
product.
 Personal injury or property damage that occurs as the result of deficiently
performed or non-performance of maintenance.

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Components and replacement parts
 Components and replacement parts procured locally must comply with the
technical requirements defined by the manufacturer. This is ensured in the case
of OEM replacement parts supplied by us.
 Use only fuses having the prescribed characteristics.
 Incorrect battery types and improper exchange of batteries result in an explosion
hazard. Use only the same battery type or an equivalent type recommended by
us.
 Batteries require environmentally appropriate disposal. Bring them to the local
collection centers.
 Note that the cylinders containing the extinguishing agent are under pressure
and must be exchanged in accordance with local safety regulations.
Changes to system layout and products
Changes to the system and to individual products may result in faults and incorrect
functioning. Please request from us, from the system installer or from the
respective safety authorities a written authorization for planned changes and
system expansions.
Check serviceability of products
 Notify persons in the event of mist and noise.
 Notify persons of the testing of the alarm devices and make provisions for
possible panic reactions.
 Notify the alarm and fault reception points connected to the system of immanent
test -remote transmission.
 When testing the extinguishing system, evacuate the extinguishing area and
block it off.
Electrical installations
DANGER
Work on electrical systems must be carried out in accordance with electro-
technical rules and only by a trained electrical technician or an instructed
person under the management and supervision of an electrical technician.
Work on fittings, on the pipe grid and on devices for supplying extinguishing
agent must be undertaken only by an authorized technician and in compliance
with the technical specifications in force.
DANGER When performing work in areas at risk of explosion, comply with the respective
safety procedures.
Maintenance work
If you perform maintenance yourself, please observe the following points:
 If you require assistance, you must use tools that are safe and intended for the
task such as, for example, a ladder.
 If you are triggering fire controls for test purposes, there must be no damage
caused to system components.
 Avoid unintended triggering of remote transmission.
 Before actuating manual release for test purposes, mechanically block the
activation of extinguishing.
 Use or require the use of the "General installation instructions" as the guideline
for extinguishing systems. This guideline is available from us on request.

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3 System overview
An extinguishing system consists of the following components:
– Fire detector for automatic activation of extinguishing.
– Manual Release button for manual activation of extinguishing.
– Emergency hold button to temporary stop the extinguishing or abort button to
cancel the initiated extinguishing release as long as activated time is running.
– Control unit for evaluating, displaying and operating all functions of an
extinguishing area.
– Alarm horn and illuminated warning panel for on-site alarm notification.
– Remote transmission facility for transmitting alarms and faults.
– Control device for closing doors and fire protection flaps and shutting down of
ventilation.
– Releasing elements for triggering the valves for activation of extinguishing.
– Devices to report the flooding and the loss of extinguishing agent.
Fig. 1 Structure of the extinguishing system
Extinguishing control unit
The XC1003-A extinguishing control unit is used for displaying, operating and
monitoring the functions of an extinguishing area and its immediate environs.
All detectors, alarm horn, illuminated warning panel, monitoring devices and
controllers are connected to the extinguishing control unit. If a detector triggers an
alarm, it is transmitted to the extinguishing control unit. At the extinguishing control
unit the decision is made how the alarm is to be processed. The same applies to
faults. The processing of alarms and faults is different depending on the
configuration of the system.

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Power supply
The extinguishing control unit is connected to the power mains at all times. In the
event of a mains power failure the extinguishing control unit is supplied by built-in
batteries. Battery operation in the event of a mains power failure is for a limited
time.
Fire detector
Several fire detectors are consolidated into a detector zone. Up to 32 fire detectors
can be connected to each detector zone. In the event of fire, the detector zone of
the alarming fire detector is indicated on the extinguishing control unit.
In the basic settings of the extinguishing control unit detector zones 1 and 2 serve
the automatic activation of extinguishing. The extinguishing control unit assesses
the zones in a so-called cross-zoning: in order to activate extinguishing, one fire
detector from each group must trigger an alarm. This principle ensures high
reliability so that extinguishing is not unjustified triggered.
Manual release button
Extinguishing can be manually activated by using a manual release button.
Alarm on site
"Fire alarm" is signaled with an alarm horn. State "Activated" and “Released” are
signaled with an alarm horn and an illuminated warning panel.
Remote transmission
Along with on-site alarm notification, activation of extinguishing and faults can be
transmitted via a remote transmission device to an external receiving station or
passed on to a fire detection system.
Fire protection installations
As a rule, before automatic extinguishing is triggered, building fire protection
installations must be set in the correct position. For example: door holding magnets
are de-energized, fire protection flaps are closed and fans and air-conditioning
systems are turned off.
Activation of extinguishing and monitoring
Valves on the extinguishing agent cylinders are triggered for activation of
extinguishing. The effected activation of extinguishing is reported to the control unit
via a pressure switch located at the cylinder bank. In addition, the weight or the
pressure of the extinguishing agent cylinders are constantly checked using cylinder
scales or manometers that trigger a contact if the value is too low.
Extinguishing blocking
During the activated time an activation of extinguishing already initiated can be
temporarily stopped by pressing the Emergency hold button or canceled by
pressing the Emergency abort button.
The automatic activation of extinguishing can be blocked as a precaution for
maintenance work. In this instance, in the event of fire, it is possible to press the
Manual release button for activation of extinguishing.

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3.1 Configuration of the system
Every extinguishing system is individually configured. The configuration has an
effect on operation. The following table shows the configuration of your automatic
extinguishing system.
Function Configuration
Activation of access level 2 [ ] using standard access code
[ ] using individual access code
Setting of activated time ........ seconds
Setting of flooding time ........ seconds
State “Fire alarm“ [ ] slow pulsating
[ ] continuous
[ ] not activated
State “Activated“ [ ] continuous
[ ] pulsating
Sound mode of alarm horn
State “Released“ [ ] pulsating
[ ] continuous
Fixed running time of alarm horn [ ] yes ........minutes
[ ] no
Reminder beep every 4 minutes upon "Fault"
and "Part of system off" [ ] activated [ ] not activated
Emergency hold button installed [ ] yes
[ ] no
Emergency abort button installed [ ] yes
[ ] no
Other blocking devices .....................................................................
Extinguishing agent monitoring [ ] yes
[ ] no
Pressure switch for state "Released" [ ] yes
[ ] no
Trigger condition for automatic activation of
extinguishing [ ] Detector zone 1 or 2 [ ] Detector zone 1 and 2
[ ] Detector zone 1 and 2 and 3
Alarm verification activated [ ] yes
[ ] no
Direct remote transmission [ ] yes
[ ] no [ ] fire alarm [ ] activated
[ ] extinguishing activated
[ ] fault
Transmission to the fire detection control unit [ ] yes
[ ] no [ ] fire alarm [ ] activated
[ ] extinguishing activated
[ ] fault
[ ] blocked
Maximum operating time in the event of mains
power failure ........ hours
Fault delay in the event of power failure ........ minutes
System reset not possible as long as alarm
horn or manual release button or pressure
switch (released) is active
[ ] yes
[ ] no
Faults must be reset after being eliminated [ ] yes
[ ] no

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4 Structure and function
This chapter describes the structure and function of the extinguishing control unit. It
provides an overview of what options are offered by the extinguishing control unit.
A more detailed description of the individual procedures is provided in the
"Operation" and "Maintenance" chapters.
4.1 Indicators and operating elements
The figure below represents the indicators and the operating elements of the
extinguishing control unit.
Fig. 2 Indicators and operating elements
The operating interface consists of the following elements:
 Light emitting diodes (LEDs):
The red LEDs signify states "Fire alarm" (alarm detectors), "Activated"
(activation of extinguishing initiated), or "Released" (extinguishing activated).
The yellow LEDs signify system parts "Disabled" or in "Test mode" or "Fault".
 Keys:
The keys are used for operating the extinguishing control unit and for entering
the access code to allow system operating (Access level 2 enabled).

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LED functions Sector A Key functions
Silence Re-sound Horn.
Block and clear activation of
extinguishing.
Show the current operating mode and
the process in the event of an
activation of extinguishing.
System ON
Mode
select
Silence
Re-sound
Horn
Operating access
Autom. & Man. blocked
Manual only
Fire alarm
Mech. blocked
Activated
Released
42 3
Remote transmission
1
Enter access code for system operating
(Access level 2).
LED functions Sector B Key functions
Lamp test, horn test and illuminated
warning panel test.
System test (only for maintenance).
Disable and enable horn/actuator and
fire controls.
Show the system parts of the
extinguishing control unit that are
currently disabled or on fault.
Power ault
Peripheral ault
Lamp
test
Earth ault
Loss o agent
System ault
Disabled
Fault
Detector test Emergency
hold / a ort
Horn / actuator
Fire control
Disable /
Enable
System test
System
test
RT - ault
RT - alarm
Disable /
Enable
Disabled / ault
Disabled / ault
Disable and enable remote
transmission for alarm and fault.
LED functions Sector C Key functions
Disable and enable detector zones and
manual release.
Enable and cancel test mode of
detector zones and manual release.
Silence buzzer upon alarm and fault.
Indicate the operating states of the
detector zones and manual release.
Manual
release Reset
Silence
uzzer
ZONES
det. test /
enable
ZONES
disable /
enable
Detector zone 1
Detector zone 2
Detector zone 3
Reset unit upon alarm and possibly
also upon fault.

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4.2 Function
4.2.1 Access levels
The extinguishing control unit is protected by access levels against unauthorized
manipulation.
 Access level 1: operation is possible at any time.
 Access level 2: operation is possible only using an access code.
In Access level 1, as a rule, only the buzzer can be silenced in the event of an
alarm or a fault. All other commands can be accessed in Access level 2.
4.2.2 Typical extinguishing process
The following block diagram shows a normal extinguishing process in the basic
setting of the control unit and with an unblocked activation of extinguishing.
Reporting to ire detection system
Illuminated warning panel
Alarm horn
Remote transmission
Fire control
Fire
alarm
Actuator
Flooding
Time
Released
Slow Fast FastSlow
Hold or
abort
Continuous
E ect o
agent
Activated
Released
Fig. 3 Block diagram process
An automatic extinguishing is enabled after the control unit has run through two
alarm levels "Fire alarm" and "Activated".
If a detector detects a fire in the extinguishing area (zone 1 or 2), it triggers a "Fire
alarm". The alarm horn sounds slow pulsating. In the case of "Fire alarm" the alarm
horn can be silenced and the system reset. The fire detectors from zone 3 monitor
as a rule the areas adjacent to the extinguishing area. Zone 3 can also be unused.

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If yet another detector of the detector zones detects a fire outbreak in the
extinguishing area (one detector from each of zones 1 and 2) or if the manual
release button is activated (zone 4), the control unit goes over to the "Activated"
state. The alarm horn changes from slow to a pulsating tone. During the pre-
warning time all people must evacuate the area to be flooded. The activated time
can be set to between 5 and 60 seconds.
After expiry of the activated time the releasing element (actuator) is triggered and
the flooding time begins. At the same time the illuminated warning panel is
activated, and the alarm horn changes from pulsating to a continuous tone. After
several seconds, the pressure switch at the cylinder bank reports ejection of
extinguishing agent. From this point on, the alarm horn can be silenced. The
system can be reset only after completion of the flooding time. The flooding time
can be set to between 30 and 120 seconds.
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.
4.2.3 Blocking functions
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 activated time.
During the activated time, people can evacuate the room to be flooded. When the
hold button is pressed, the activated time is suspended and the alarm horn
changes its tonality. When the hold button is released, the activated time is
restarted.
Emergency abort button
The Emergency abort button is used for canceling the initiated extinguishing
during the activated time.
During the activated 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 activated 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
2
-extinguishing systems and
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.

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Door latch contact
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.
4.2.4 Faults
The extinguishing control unit has an extensive self-monitoring functionality. If the
control unit detects an error such as, for example, loss of extinguishing agent, then
it will be indicated as a fault. Faults are normally transmitted to a receiving station.
Faults should always be eliminated as soon as possible.
4.2.5 Maintenance options
The extinguishing system must be serviced on a regular basis. Only in this way is it
possible for the system to function perfectly even in a serious event. Therefore,
carry out the following maintenance work on a regular basis:
 Check the control unit
 Check the detectors
 Check the alarm horn and the illuminated warning panel
 Check the remote transmission or forwarding to the fire detection system
 Check the fire control (ventilation control, door closer)
 Check the blocking devices (Emergency hold or abort button)
 Check the status of extinguishing agent storage

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5 Operation
Alternative configuration Standard configuration
(Sector A) (Sector A)
Fig. 4 Front view for operation
5.1 Normal operation
The indicators in sector A of the operating interface are configured in your system
according to either "Standard" or "Alternative".
Standard configuration
In normal operation only the green LED "System ON" is lit.
If the automatic activation of extinguishing is blocked, then the LED "Manual only"
is lit.
If the automatic and manual activation of extinguishing is blocked, then the LED
"Autom. & Man. blocked" is lit.
Alternative configuration
In normal operation the green LED "System ON" and the yellow LED "Autom. &
Manual" are lit. The latter indicates that there is no blocking of the activation of
extinguishing.
If the automatic activation of extinguishing is blocked, then the LED "Manual only"
is lit and LED "Autom. & Manual" is de-activated.
If the automatic and manual activation of extinguishing is blocked, then the LED
"Autom. & Man. blocked" is lit.
State "Mechanical blocked"
If the mechanical blocking device is activated, then LED "Mech. blocked" is
activated. However, the triggering of the electrical actuator is not blocked. Only the
flooding of the extinguishing area is prevented.

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5.2 Enabling access level 2
General
Normally, operation of the extinguishing control unit is blocked. Operation "Access
level 2" is enabled by using the access code.
Access code
In order to enable access level 2 by using the access code, here's how:
1. Enter the access code "4233" via the numeric keys:
 The LED "Operating access" lights up and operation is enabled.
2. In order to again block access level 2, you must wait. Access level 2 will be
automatically blocked again three minutes after the last entry:
 The LED "Operating access" is no longer lit.
5.3 Activation of extinguishing
General
In the event of fire, an extinguishing process normally occurs automatically and
triggers the two alarm stages "Fire alarm" and "Activated" before extinguishing is
activated. As explained in the following, there are different operating options to
affect the extinguishing process.
Fire alarm
A fire detector in the extinguishing area has detected a fire:
 The buzzer in the control unit is activated and the alarm horn signal "Fire alarm",
as a rule, with a slow pulsating tone is activated.
 The red LEDs "Detector Zone 1" or "Detector Zone 2" lights up.
 The red LED "Activated" flashes.
In the case of a fire that justifies extinguishing, the second fire detector triggers
within a few seconds. If the second fire detector does not trigger for a longer period
of time, you can inspect the fire location, silence the alarm horn and the buzzer and
block automatic activation of extinguishing.
Here's how to proceed, in order to block the automatic activation of extinguishing:
1. Press the "Silence buzzer" key.
2. Enable "Access level 2".
3. Press the "Silence Re-sound horn" key.
4. Press the "Mode select" key:
 Once to set the control unit in "Manual only" mode, or
 Twice to set the control unit in "Autom. & Manual blocked" mode.
If you find the alarming fire detector and the cause, you can reset the system and
cancel the blocking of the automatic activation of extinguishing.
Here's how to proceed, in order to cancel the blocking of the automatic activation of
extinguishing:
1. Enable "Access level 2".
2. Press the "Reset" key.
3. Press the "Mode select" key once or twice (depends on blocking mode
selected).

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Activated time
The second fire detector in the extinguishing area has detected a fire or you have
activated extinguishing manually by pressing the Manual release button:
 The alarm horn becomes a fast pulsating tone. The illuminated warning panel is
activated.
 The red LEDs "Detector Zone 1" and "Detector Zone 2" or possibly the red LED
"Manual release (Zone 4)" light up.
 The red LED "Activated" lit.
All people in the area to be flooded must immediately evacuate it. Depending on
the installed blocking device, you have the option of temporary stop or canceling
extinguishing, if required:
1. Press the "Emergency hold button", until all people have left the room then
release, or
2. Press the "Emergency abort button", if you want to cancel the initiated
extinguishing.
Flooding time
The extinguishing element is triggered after activated time elapsing and flooding
time beginning:
 The red LED "Activated" is lit.
 After several seconds the alarm horn changes to continuous sound.
 The pressure switch reports the released condition of the extinguishing agents,
then the red LED "Released" is activated.
You can now silence the alarm horn:
1. Enable "Access level 2".
2. Press the "Silence Re-sound Horn" key.
Note: Horn silence is only accepted after state "Released" is reported.
3. Press the "Reset" key.
Note: Reset is only accepted after the flooding time is elapsed.
In the event of "Fire alarm" or "Activated", different building services have been
included in the defined fire position. These can be set back to their normal
operating states after successful extinguishing and resetting the system.
Remote transmission
If the extinguishing control unit is connected to remote transmission device, then it
is activated as a rule only in the event of "Released".
If the extinguishing control unit is connected to a fire detecting system, then as a
rule "Fire alarm" and “Released” is forwarded.

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5.4 Disabling system part
In certain situations (e.g. maintenance work) it is reasonable to disable parts of the
system. If a system part is disabled (isolated), then the LED "Disabled" is lit
continuously.
WARNING
Disabled system parts can under certain circumstances prevent the correct
acquisition or processing of alarms or faults as well as activation of
extinguishing. Therefore, re-enable all disabled system parts as soon as normal
conditions prevail!
5.4.1 Disabling detector zones
In order to prevent unintentional alarm messages or activation of extinguishing, in
exceptional cases detector zones must be isolated from the system. The instances
wherein a detector zone should be disabled depend on the detectors used and the
fault dimensions (e.g. smoke or dust).
WARNING Switched-off detector zones prevent activation of extinguishing!
Therefore, enable all switched-off system parts again, as soon as normal
conditions prevail!
Here's how to disable a detector zone:
1. Enable "Access level 2".
 The LED "Operating access" lights up.
2. Press the key "ZONES Disable/Enable" until the yellow LED is lit at the desired
detector zone. After disabling, you can perform the required work on the detector
zone, without the risk of alarm or fault.
– The first pressing disables detector zone 1:
 The yellow LEDs "Detector Zone 1"/"Disabled"/"Manual only" light up.
– The second pressing disables detector zone 2:
 The yellow LEDs "Detector Zone 2"/"Disabled"/"Manual only" light up.
– The third pressing disables detector zones 1 and 2:
 The yellow LEDs "Detector Zone 1 and 2"/"Disabled"/"Manual only" light up.
– The fourth pressing disables detector zone 3:
 The yellow LEDs "Detector Zone 3"/"Disabled" light up.
 The yellow LED "Manual only" is no longer lit (depending on programming).
– The fifth pressing disables detector zone 4:
 The yellow LEDs "Manual Release (Zone 4)"/"Disabled" light up.
– The sixth pressing disables all detector zones:
 The yellow LEDs "Zones 1 to 4"/"Disabled"/"Autom. & Man. blocked" light
up.
– The seventh pressing re-enables all detector zones:
 The yellow LEDs "Zones 1 to 4"/"Disabled"/"Autom. & Man. blocked" are no
longer lit.
3. The system is again in normal operation.

Operation
20
Building Technologies A6V10099835_a_en
Fire Safety & Security Products 12.2007
5.4.2 Disabling alarm Horn, releasing element and fire controls
In order to prevent unintentional activation of the alarm horn, releasing element
(actuator) and fire controls can be disabled in exceptional cases. Together with the
alarm horn, also the releasing element is disabled.
WARNING Disabled alarm horns and fire controls are not activated in the event of an
alarm! Therefore, re-enable disabled alarm horns and fire controls again as
soon as normal conditions prevail!
Here's how to proceed, in order to disable the alarm horn, the releasing element
(actuator) and the fire controls:
1. Enable "Access level 2".
 The LED "Operating access" lights up.
2. Press the "Disable/Enable" key ("Horn/Actuator"/"Fire control") until the desired
disabling is displayed. After disabling, you can proceed with the desired work,
without the alarm horn/actuator and the controls being activated.
– The first pressing disables the alarm horn and the actuator:
 The yellow LEDs "Horn/Actuator"/"Disabled" light up.
– The second pressing disables the fire control:
 The yellow LEDs "Fire control"/"Disabled" light up.
– The third pressing disables the alarm horn, the actuator and the fire control:
 The yellow LEDs "Horn/Actuator"/"Fire control"/"Disabled" light up.
– The fourth pressing enables the alarm horn, the actuator and the fire control:
 The yellow LEDs "Horn/Actuator"/"Fire control"/"Disabled" are no longer lit.
3. The system is again in normal operation.