LES-RACK-M and LES-RACK-S
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
Installation and user manual for
Local Extinguishing System
LES-RACK
Type designation: LES-RACK-M (Master), LES-RACK-S (Slave)
This manual describes procedures for installation, commissioning, operation and maintenance of extinguishing
system with clean gas LES-RACK manufactured by company CONTEG spol. s r.o. The system may be used only for
described applications and in strict compliance with instructions contained in this manual. Please read the manual
carefully and keep it in safe place for future reference.
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
INDEX
I.
GENERAL .................................................................................................................................................................. 4
I.1
I.2
I.3
I.4
I.5
USE ................................................................................................................................................................... 4
OPERATING CONDITIONS ....................................................................................................................................... 4
SYSTEM DESCRIPTION ........................................................................................................................................... 4
SYSTEM FUNCTIONALITY DESCRIPTION ..................................................................................................................... 5
GENERAL SAFETY INFORMATION ............................................................................................................................. 5
II. TECHNICAL SPECIFICATIONS.................................................................................................................................... 6
II.6
II.7
II.8
II.9
II.10
II.11
II.12
II.13
II.14
II.15
II.16
II.17
EXTINGUISHING SYSTEM TYPE VERSIONS................................................................................................................... 6
MAIN TECHNICAL PARAMETERS .............................................................................................................................. 7
DESIGN .............................................................................................................................................................. 7
MATERIAL........................................................................................................................................................... 8
SURFACE FINISH ................................................................................................................................................... 8
EXTINGUISHING UNIT ............................................................................................................................................ 8
CONTROL UNIT .................................................................................................................................................... 9
COMMUNICATION, REMOTE ACCESS AND HISTORY LOG .............................................................................................. 9
DETECTION ELEMENTS .......................................................................................................................................... 9
POWER SUPPLY SOURCE ...................................................................................................................................... 10
EXTINGUISHING AGENT ....................................................................................................................................... 11
MARKING ......................................................................................................................................................... 11
III. REQUIREMENTS FOR PROTECTED EQUIPMENT .................................................................................................... 12
III.18
III.19
CLASSIFICATION OF PROTECTED SPACE, FIRE SAFETY ................................................................................................. 12
REQUIREMENTS FOR PROTECTED EQUIPMENT.......................................................................................................... 12
IV. INSTALLATION ....................................................................................................................................................... 13
IV.20
IV.21
IV.22
IV.23
IV.24
IV.25
IV.26
IV.27
IV.28
V.
GENERAL PROVISIONS ......................................................................................................................................... 13
SAFETY PROVISIONS ............................................................................................................................................ 13
SYSTEM INSTALLATION ........................................................................................................................................ 13
COMMISSIONING ............................................................................................................................................... 13
SYSTEM MAINS POWER SUPPLY ............................................................................................................................ 13
SWITCHING OFF THE SYSTEM................................................................................................................................ 13
INSTALLATION OF CABLES..................................................................................................................................... 14
INSTALLATION OF EXTERNAL COMPONENTS ............................................................................................................. 14
CONNECTION OF EXTERNAL INPUT AND OUTPUT DEVICES .......................................................................................... 14
CHECKS AND COMMISSIONING ............................................................................................................................ 16
V.29
V.30
V.31
V.32
LINE TESTING .................................................................................................................................................... 16
CHECK OF THE DEVICES’ FIXED POSITION ................................................................................................................ 16
SYSTEM FUNCTIONALITY CHECK ............................................................................................................................ 17
CHECK OF DETECTION ELEMENTS .......................................................................................................................... 17
VI. OPERATION ............................................................................................................................................................ 17
VI.33
VI.34
VI.35
VI.36
GENERAL REQUIREMENTS .................................................................................................................................... 17
LES-RACK-M – OVERVIEW OF STATUS LEDS AND CONTROL ELEMENTS ...................................................................... 18
LES-RACK-S – OVERVIEW OF STATUS LEDS AND CONTROL ELEMENTS........................................................................ 19
DESCRIPTION OF LES-RACK CONTROL ELEMENTS .................................................................................................... 20
VII. MAINTENANCE ...................................................................................................................................................... 21
VII.37 GENERAL PROVISIONS ......................................................................................................................................... 21
VII.38 CHECKS PERFORMED BY USER............................................................................................................................... 21
VII.39 CHECKS OF THE PROTECTED SPACE ........................................................................................................................ 22
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
VII.40 CHECKS PERFORMED BY SERVICE ORGANIZATION ..................................................................................................... 22
VII.41 CHECKS AND SERVICE VIA SERIAL INTERFACES .......................................................................................................... 23
VII.42 LIST OF ACCESSORIES AND SPARE PARTS ................................................................................................................. 23
VIII.
ENVIRONMENTAL ASPECTS ........................................................................................................................... 24
VIII.43 SYSTEM’S LIFE-CYCLE .......................................................................................................................................... 24
VIII.44 ENVIRONMENTAL IMPACT .................................................................................................................................... 24
VIII.45 MATERIAL SAFETY DATA SHEET – EXTINGUISHING AGENT HFC-236FA ........................................................................ 24
IX. WARRANTY ............................................................................................................................................................ 27
IX.46
IX.47
IX.48
IX.49
WARRANTY TERMS AND CONDITIONS .................................................................................................................... 27
INTELLECTUAL PROPERTY ..................................................................................................................................... 27
STATEMENT OF COMPLIANCE................................................................................................................................ 29
CERTIFICATE OF WARRANTY ................................................................................................................................. 30
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
I. GENERAL
I.1 Use
LES-RACK is a self-contained, fully automatic detection and fire protection system. Designed for installation in 19"
rack cabinets and bigger, it offers very efficient and effective solution for servers, telecommunication and control
racks/cabinets. System LES-RACK-M consists of fully equipped automatic system of fire detection, control,
evaluation, communication and extinguishing unit. Larger-sized server racks and adjacent cabinet units may be
protected by additional auxiliary units LES-RACK-S consisting only of detection elements, communication and fire
extinguishing unit. Slave units must always be connected to control unit LES-RACK-M. One Master unit allows up to
4 Slave units to be connected, each via its own dedicated communication line and within single fire compartment.
Upon fire detection, all units are actuated simultaneously. Extinguishing system causes no damage whatsoever to
data stored on storage media, extinguishing agent is electrically non-conductive and causes no corrosion. The
system may also be used for extinguishing of electrical equipment under live nominal voltage up to 1000 V. Lifetime
cycle of the system is 10 years from the year of production. The manufacturer’s policy is to continuously upgrade its
products’ features and therefore company CONTEG, s.r.o. hereby reserves the right to change information and
specifications contained in this manual without any prior notice.
I.2 Operating Conditions
The system is designed for installation in environments protected against weather impact, class 3K5 according to EN
60721-3-3 with temperature range from -5°C to 50°C, for environments classified as BNV according to ČSN EN 11271 and environments classified as AA4 according to ČSN 33 2000-3. For correct function of the equipment, its
operating position and location in the enclosed protected space is critical. Operating position must always be
horizontal, control panel must be easy to access and detection elements must extend beyond other devices located
in the protected space. The system must be placed in the uppermost position in the cabinet. Working ability of the
system is guaranteed within the temperature range from -5°C to 50°C with relative humidity 95% and in
environment without sudden temperature changes, which could cause condensation and ice coating.
I.3 System Description
Individual parts of the system are placed and shockproof-anchored to duralumin body of the unit. Surface finish is
red polyester powder paint (RAL3000), minimum layer of protective coating is 60 µm. Extinguishing unit is formed by
cylindrical metal pressure cylinders (1) filled with extinguishing mixture (clean extinguishing agent HFC-236fa
Hexafluoropropane according to the Certificate of Type issued by TÚPO – Technical Institute of Fire Protection,
Authorized Body 221) and pressured by propelling gas (Nitrogen 5.0 – ČSN 65 4335). Cylinders are gas-tightly sealed
by collecting fittings (2) with connection to filling device (3) and pressure gauge (4) allowing visual checking. Further,
it also contains solenoid valve (5) and electronic pressure checking sensor (6). Detection elements (7) are located in
the unit’s rear part and are specially adjusted to provide maximum extension to free space ensuring maximum
efficiency of their function. Actuation and control of LES-RACK is realized by integrated certified fire alarm control
panel (FACP) unit LES-start-1 (8). Clear and uniform indication of the system’s operating status is provided by LED
controls on front panel reporting any current combination of function statuses. All light indicating LEDs may be
manually checked to verify their correct operation. Pressure in the system is checked by analogue pressure checking
switch, which is connected to the control unit. Unit’s pressure may also be monitored by remotely connected
supervising system. All terminal devices are equipped with relevant current protections. Extinguishing agent is
expelled through special rising pipe via collecting pipe, solenoid valve and through special discharge nozzle (9) it is
distributed and directed into the protected space. After use, the system may be re-filled, checked and re-used.
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
7
9
1
6
5
2
3
4
8
I.4 System Functionality Description
For detection of fire, each LES-RACK system is equipped with optical fire detectors, which – in order to eliminate
false alarms – are interconnected in double-loop dependency and connected to the evaluation and control unit.
Integrated control unit indicates system’s current status, controls and evaluates actuation of the extinguishing unit.
System LES-RACK-M allows communication with the fire alarm control panel (FACP) of the building and reports the
following statuses: pre-alarm, alarm and extinguishing. In case one of the two detectors in pair detects fire, the unit
triggers pre-alarm and acoustic and visual signalization activates. When smoke is detected by both detectors
simultaneously, the system automatically enters the alarm status. This means automatic activation of output contact
controlling the extinguishing unit, activation of acoustic and visual signalization of alarm status, and after predetermined time delay the solenoid valves open and the protected space is flooded by the extinguishing agent from
storage cylinders. System allows also for manual actuation by manual pushbutton START available as optional
accessory.
I.5 General Safety Information
Activation of fire extinguishing system LES-RACK may expose the user to risks associated with natural characteristics
of the extinguishing agent as such and possibly also with its decomposition products formed when the extinguishing
agent gets in contact with fire or hot surfaces. User of the system is obliged to prevent any exposure of the
operating personnel to the extinguishing agent as well as its decomposition products, in particular by providing
trainings on regular basis. Activation of extinguishing system may be accompanied by sound with level sufficient to
scare present person(s), but not loud enough to cause traumatic injury. Extinguishing agent discharged from the
unit’s nozzle at high speed may flow with sufficient force to move solid objects located directly in the extinguishing
agent’s path or its vicinity. Discharged agent may create flow in the protected space with force sufficient to move
lightweight unfixed objects. Direct contact with the extinguishing agent discharged by the LES-RACK system may
cause frostbite burns on skin. Liquid phase of the extinguishing agent, when mixed with air, evaporates rapidly thus
limiting this risk only to imminent vicinity to discharge nozzle. In environments with high humidity, visibility might be
temporarily slightly compromised due to water vapours condensation.
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
II.
II.1
TECHNICAL SPECIFICATIONS
Extinguishing System Type Versions
II.1.1 LES-RACK-M (MASTER) – the device consists of main control unit, control and extinguishing unit
with detection elements. The system works either as standalone or allows up to four additional
SLAVE units to be connected in order to protect larger extinguishing compartments. Main control unit
periodically checks the system status, possibly also including the SLAVE unit(s) status. Upon
automatic activation by loops 1 and 2 by any of the units connected within the system (MASTER,
SLAVE 1-4), or possibly when the manual pushbutton is activated, the compartment(s) protected by
all units will be flooded simultaneously, provided that no part of the system reports door contact
fault, i.e. open entrance to the extinguishing compartment implying possible presence of operating
personnel and compromised extinguishing capability of the system due to increased volume of
protected space.
II.1.2 LES-RACK-S (SLAVE) – the device consists of extinguishing unit, control unit with detection
elements and is used as an additional unit to a MASTER unit to support extinguishing of larger
compartments to be protected.
II.1.3 Schematic diagram of the LES-RACK system with key to attached devices and marked direction of
communication. Bi-directional communication between the system and its accessories means that
both the auxiliary device and connecting lines are monitored for fault-free operation.
6
7
8
9
1
12
19
2
1
3
5
7
9
17
19
17
LES-RACK Master
LES-RACK Slave 2
LES-RACK Slave 4
Input door contact
Output for visual, acoustic signalization
Output for technology blocking
Fault
3
4
2
4
6
8
12
18
5
LES-RACK Slave 1
LES-RACK Slave 3
Input for detection loop C
Input for external temperature sensor
Communication data line
Output for HVAC blocking
18
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
II.2
Main Technical Parameters
Unit width
LES-RACK-M
483 mm / 19"
LES-RACK-S
483 mm / 19"
Unit height
105 mm / 2.5 U
105 mm / 2.5 U
382 mm
382 mm
max. 750 mm
max. 750 mm
15.5 kg ± 3 %
15.5 kg ± 3 %
Weight of extinguishing agent
2 kg
2 kg
Classification of environmental conditions according to EN 60721-3-3
3k5
3k5
A
A
-5°C to 50°C
-5°C to 50°C
Relative humidity of air
95% non-condensing
95% non-condensing
Atmospheric pressure
70 to 106 kPa
70 to 106 kPa
Operating position
horizontal
horizontal
Operation type
permanent
permanent
10 bar
10 bar
Unit base depth
Total depth of detection extension, according to the depth of
protected equipment
Weight of the system
Environment class
Operating temperature range
Operating pressure at 20°C
Maximum operating pressure
16 bar
16 bar
class B device
class B device
max. 40 VA
max. 40 VA
Protection class
IP 30
IP 30
Shielding class (non-interference)
RO2
RO2
230 V ± 15 %
230 V ± 15 %
50 Hz
50 Hz
Standby current
100 mA
100 mA
Current consumption during pre-alarm
150 mA
150 mA
Current consumption during alarm (powered from network)
300 mA
300 mA
Max. current consumed by outputs in standby
40 mA
40 mA
Max. current consumed by outputs during alarm
0.5 A
0.5 A
Max. output voltage on terminal X32 (batt. recharge)
13.7 V
13.7 V
Max. current from terminal X32 (batt. recharge)
200 mA
200 mA
Shielding according to ČSN EN 55022
Electrical input power
Supply voltage of mains source
Supply frequency of mains source
Backup power source (150x94x65mm)
12 V/7.2 Ah
12 V/7.2 Ah
Acoustic signalization, fire alarm
82 dB
---
Acoustic signalization, fault, intermittent tone
76 dB
---
II.3
Design
Individual types of LES-RACK are manufactured by assembly of certified components, extinguishing units are filled
with certified extinguishing agent and propelling inert gas. Welds and all joints of the extinguishing unit are gas-tight.
Extinguishing agent is supplied to the fire by opening of solenoid valve installed on collecting pipe of the system
terminated by special nozzle, which ensures perfect distribution of extinguishing agent in the protected space.
Extinguishing unit is controlled by integrated fire alarm control panel (FACP) LES-start-1. The system is equipped
with backup power supply source capable of maintaining the operation during mains power supply failure for up to
24 hours. Backup power supply source is recharged automatically. To ensure its maximum life-time cycle,
temperature is checked in regular intervals. Based on temperature readings the charging current is adjusted. Failure
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
of both the mains and the backup power supply sources at the same time is indicated. Automatic detection of fire
hazard is ensured by voltage-operated smoke detectors. To maintain high reliability of the system, automatic
detection is blocked by the condition of so-called double-loop dependency (on separate lines 1 and 2) of alarm
status and by delayed extinguishing action – during this delay, operating personnel may visually check the protected
space and cancel the extinguishing action preparation process, if necessary. LES-RACK-M is equipped with line input
for manual pushbutton (call point). All manual controllers are clearly marked to differentiate their purpose of use. By
initializing such manual pushbutton the personnel starts immediate extinguishing action, maximum within 3
seconds, with no option to return the system to standby. The system is equipped with option to check whether
doors are closed by TAMPER. In case the door is open, fault is reported and simultaneously the extinguishing agent
discharge is blocked. TEST mode allows the personnel to periodically check functionality of all system’s components.
Extinguishing unit LES-stop (1-7) 2 kg
Integrated FACP LES-start-1
Integrated expander
Detection loop A+B with evaluation of mutual dependency for conventional voltageoperated smoke detectors
Analogue pressure check of extinguishing agent in cylinders
Auxiliary input – optical element EXT. FAULT
Internal acoustic signalization ALARM/FAULT
Relay outputs, voltage-free
Relay outputs, internal, voltage-operated
1x SOLENOID VALVE LES-stop
Optical signalization on front panel 1x Green OPER/TEST, 2x Red PRE-ALARM and
ALARM, 10x Yellow FAULT = sum, A+B, pressure sum, accu, mains, valve, slave 1 to 4
Key protected switch for switching the operation status RESET/TEST-OPER
Pushbutton MUTE and RESET
On-board history log memory – communication connector on front panel of the unit
ETHERNET – communication module for service use included in supply of ETH connector
on front panel of the unit
4x communication data line RS485 for interconnection of up to four LES-RACK-S units
Communication data line RS485 for connection to LES-RACK-M
Acoustic signalization
Backup power source 12 V/7.5 Ah
Mains power supply 230VAC on rear panel with fuse box and switch
Outputs of system reports and communication lines for SLAVE modules on rear panel
II.4
LES-RACK-M
YES
YES
NO
LES-RACK-S
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
YES
YES
YES
NO
YES
YES
YES
NO
NO
NO
YES
NO
YES
NO
YES
YES
YES
YES
NO
YES
NO
YES
YES
NO
Material
Unit’s chassis is made of duralumin, individual parts of the equipment are made of steel sheet, brass, pressed pieces
of rubber and plastic. All materials are tested, they withstand prescribed operating conditions and used
extinguishing agent, are stable and corrosion resistant during life-cycle of the system.
II.5
Surface Finish
After thorough degreasing, the surface of the device and storage cylinders is covered with red polyester powder
paint (RAL3000). Minimum thickness of coat layer is 60 µm. Adherence conforms to grade 0-1 according to ČSN ISO
2409. Surface must not show faults, such as scratches, leaked paint, impurities, etc. All materials withstand
prescribed operating conditions and used extinguishing agent.
II.6
Extinguishing Unit
Extinguishing unit consists of cylinder-shaped metal storage cylinders (1) filled with extinguishing mixture. Cylinders
are gas-tightly sealed by collection fittings (2) providing connection to filling device (3) and pressure gauge (4)
allowing visual checking. The unit also contains solenoid valve (5) and electronic pressure checking sensor (6).
Extinguishing agent is expelled through special rising pipe via collecting pipe, solenoid valve and through discharge
nozzle (9) it is distributed and directed into the protected space. Collecting fitting is made of brass equipped with
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
sealing rubber O-rings. Material is marked in compliance with drawing documentation, the same applies to
embossed production number on the fitting body. Storage cylinders are marked by individual production numbers
and all relevant data are recorded in the assembly sheet of the extinguishing unit collecting fitting together with
records about checks performed during assembly.
1
II.7
2
6
9
5
Control Unit
To ensure reliability, all system components are located on single board with printed circuits. The system includes a
microcomputer controlled by microprocessor, control panel circuits and circuitry for monitoring the correct function
of software. Connector XP2 allows connection of interface for serial transmission. Loop circuits contain circuitry for
communication with microprocessor, which runs on enhanced bus. Also, they contain circuits, which control the
loop status, output control and input read. Fire detection loops are located here along with circuits for relay outputs
and relevant terminals. Power supply source circuit includes voltage stabilizer for power supply of the control unit,
power supply circuit for control unit, circuit for recharging and control of the accumulator, diagnostic circuits and
fuse to protect the backup power supply source. Automatic check of the system parts statuses is performed in
regular intervals and measured values are recorded do history log memory. Control unit has connection for an
adapter for serial communication via RS485. Communication between individual systems is made possible by
connection using XP2 connector.
II.8
Communication, Remote Access and History Log
Each system LES-RACK-M has unique IP address, is able to send information about its status and can be remotely
monitored by data network. As a standard, the device is equipped with Ethernet communication interface; upon
special request and for extra charge this interface may be replaced with GPRS communication module.
Communication in data network uses one serial channel, therefore only one of the above-mentioned
communication means may operate at a time. Independent service data channel RS232 is used for service settings
and readout of history log at the installation site, it is located at the front panel. All execution codes and data are
stored in memory capable to operate without requiring any maintenance and working reliably for minimum 10
years. Memory contents, including stored data, is automatically checked in intervals not exceeding one hour. In case
the control system finds out loss of memory contents, it reports system failure.
II.9
Detection Elements
II.9.1 Automatic detection – system component.
II.9.2 Photo-electric smoke detector, type OKB, is highly sensitive smoke detector with fast response
designed for operation in ventilated environments and higher air flow rates. Status indication is
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
provided by LED. The detector connects to fire detection loop line by means of a socket. Robust black
polycarbonate body guarantees long life-cycle. Detector’s functionality is tested by testing aerosol.
II.9.3 Voltage-operated smoke detector, MHG 231.070, is intended for automatic signalization of fire as
a detector of smoke. Detector is installed in places where smoke is expected to appear and collect. It
works on principle of infrared radiation scattering on particles of smoke. Status indication is provided
by LED. The detector connects to fire detection loop by means of MHY 734 socket. Detector’s
functionality is tested by testing aerosol.
II.9.4 Pushbutton for manual actuation – optional accessory for extra charge.
II.9.5 Voltage-operated manual pushbutton, MHA 108.132, is a fire protection device designed for
manual actuation by a person who discovers the fire. How to use the pushbutton is indicated by
instruction icon under glass cover of the pushbutton. After breaking the glass and pressing the
pushbutton, a signal is sent from the manual pushbutton and activates fire signalization in the control
unit. Manual pushbutton MHA 108 is used in interiors where permanent presence of persons is
presumed or at places where application of automatic detectors would be inefficient (staircases,
halls, etc.).
II.9.6 Manual pushbutton MHA 183 is a heavy duty addressable manual pushbutton intended for manual
actuation by a person who discovers the fire. Manual pushbutton MHA 183 is designed for use at
places not protected against weather impacts and at any other places, for which it is suitable due to
its electrical protection class and weatherproof design. Manual pushbutton MHA 183 complies with
requirements of standard EN 54-11. It is in particular suitable for explosion hazard environments
(type of explosion protection is EEx nAC IIC T6) and also in places with no explosion hazard but where
lightweight structure designs cannot be used, e.g. with increased demands for mechanical resistance.
II.9.7 Visual signalization lights – optional accessory for extra charge.
II.9.8 Visual signalization light, MHS 409, is used as a parallel optical signalization of fire alarm of one or
multiple fire detectors connected in a single line (loop). It is intended for installation using
distribution cables in conduits, mainly where no extra demands for increased mechanical resistance
are applied (lightweight design).
II.9.9 Heavy duty visual signalization light MHS 408 is used as a parallel optical signalization of fire alarm
of one or multiple fire detectors. This signalization light is intended especially for environments
where due to increased mechanical requirements other types of visual signalization lights cannot be
used, and also for signalization of function status of detectors located in explosion hazard
environment in compliance with their TPTE, while the visual signalization light MHS 408 must, in such
a case, be located outside such environment. Visual signalization light is connected to relevant fire
detector by means of terminal socket MHY 713 or MHY 703.
II.9.10 Door contact switch – optional accessory for extra charge.
II.9.10.1
Universal countersabotage contact to protect the system. It is installed on all entrances to
the protected space and is firmly fixed on the cabinet body. When disconnected, this contact
switch indicates a fault and disables the extinguishing unit because opening the protected
space compromises its tightness and safety of operating personnel.
II.10
Power Supply Source
Because the mains power supply may fail anytime, power supply for the system must be backed-up for certain time
by replacement power source. The system is equipped with maintenance-free gas-tight lead accumulators with long
service life. When the backup power supply source voltage drops below 10.5 V, it reports fault and the whole system
shuts down. Fault signal from the terminal is activated. Accumulators’ life-cycle directly depends on ambient
temperature, its hold curves are stated in technical sheets by relevant manufacturer.
Only batteries of given type and parameters may be used in the system. In case the system has been out of service
for more than 6 months, it is necessary to connect all devices to mains power supply for minimum 12 hours and
allow the backup power supply sources to charge, thus preventing irreversible damage. Batteries must be neither
opened, nor subject to any kind of tampering. Leaking electrolyte is dangerous to skin and eyes. Electrolyte may be
poisonous.
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
II.11
Extinguishing Agent
The system LES-RACK uses clean extinguishing agent HFC-236fa (Hexafluoropropane C3H2F6), Certificate of Type
issued by Authorized Body 221 – Technický ústav požární ochrany MV (Technical Institute of Fire Protection of the
Ministry of Interior) as of March 29, 2006. From the environmental protection point of view, this substance
represents a clean extinguishing agent approved by relevant certification bodies, which complies with basic
requirements for products as per § 3 of the Statutory Order No. 173/1997 Coll. Hexafluoropropane is a colourless
gas with ether-like odour, with greater specific weight than air, electrically non-conductive, non-corrosive, with zero
potential of impact to ozone layer. Extinguishing is performed by combination of physical and chemical effects, in
particular by slowing down the chemical reaction in burning phase, it causes no harm to extinguished equipment.
Minimum extinguishing concentration according to the ISO 14520-11 is 6.8%, while short-term presence in spaces
with this extinguishing concentration is neither hazardous, nor harmful to human health and life. The lowest
observed adverse effect level to human organisms is 15%. (Note: During fires, however, it is usually the
concentration of toxic products of burning material that is harmful to life and health of humans.) This extinguishing
agent allows the personnel present in protected space to finish the extinguishing action without direct impairment
of health of present persons, simultaneously it causes no damage to protected equipment and data stored in such
equipment. It must not contain any mechanical impurities and/or admixtures. Propelling gas is nitrogen 5.0 (ČSN 65
4335).
II.12
Marking
II.12.1 Extinguishing unit – assembly sheet of the unit kit contains identification data of used components;
bottom lid of each cylinder contains embossed data of year of manufacture, testing pressure,
producer’s logo, reference number, cylinder volume, weight of empty cylinder, operational
temperature range and CE marking; connecting piping has embossed serial number and material
marking.
II.12.2 The system is equipped with special data production label (when someone tries to remove the
label, it is destroyed), containing the following information:








producer’s name and address
system type
serial number
minimum and maximum operating limits
weight of empty system
weight of filling
type of extinguishing agent
year of production
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
III. Requirements for Protected Equipment
III.1
Classification of Protected Space, Fire Safety
When designing location of LES-RACK system, the data given in the table below shall apply:
System type
Maximum volume of protected cabinet
Semi-opened (perforated)
Closed
LES-RACK-M
Max. 1.5 m3
Max. 3 m3
LES-RACK-S
Max. 1.5 m3
Max. 3 m3
Declared minimum extinguishing concentration is 6.8%. Minimum project design concentration is 8.8%. For
perforated (semi-opened) racks the concentration is doubled due to presumed high losses of extinguishing agent. In
rack cabinets, no presence of persons is anticipated and, simultaneously, great concentration of cabling is presumed,
hence higher concentration of extinguishing agent is designed. Calculated values of the extinguishing agent
concentration are appropriate.
III.2
Requirements for Protected Equipment
System LES-RACK performs extinguishing on the principle of flooding the protected space with clean gas and
maintaining required extinguishing concentration inside the protected space. For proper function, working
conditions defined for operation of LES-RACK system must be observed. Protected space must feature sufficient
structural strength and tightness to hold the extinguishing charge and must be equipped with ventilation to prevent
excessive over-pressurizing of the space. In order to prevent the extinguishing agent from leaking through apertures
to adjacent endangered or working spaces, the apertures must be permanently sealed or equipped with automatic
closing device. Forced ventilation in spaces where applicable must be automatically turned off by the LES-RACK
system or closed in cases when its operation would negatively impact efficiency of the extinguishing system or could
even result in fire spreading. Ventilation systems ensuring safety do not need to be turned off when the fire
extinguishing system activates. In such case, however, it is necessary to calculate with extra volume of extinguishing
agent to guarantee minimum design concentration during the required time of protection. For purposes of
calculation of the extinguishing agent required volume, volumes of ventilated air as well as piping distribution of
HVAC systems shall be considered as part of the total protected volume. All services inside the protected space (such
as power connections, heating, etc.), which may compromise extinguishing system’s efficiency, must be turned off
by the LES-RACK system prior the extinguishing agent is discharged. To perform successful extinguishing action it is
vital not only to achieve efficient concentration in determined time, but also to maintain this concentration for
sufficient time to allow performing efficient measures. This is important for all kinds of fires because persisting
sources of ignition, such as electric arc, heat source or “deep-seated fire” with center under the surface might cause
re-ignition of fire once the extinguishing agent has been dissipated. Concentration hold time shall not be less than 10
minutes; perforated rack cabinets do not allow to guarantee to maintain efficient concentration of extinguishing
agent and it is therefore necessary to ensure suitable and effective measures to prevent fire re-ignition.
Optical smoke detector works on the principle of infrared radiation dissipation on particles of smoke. At places
where the system or such auxiliary detectors are used, all disturbing background effects must be minimized, such as
dust, cigarette smoke, exhaust fumes, technical vapours, aerosols, etc.
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Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
IV. INSTALLATION
IV.1
General Provisions
LES-RACK system is designed for installation in enclosed spaces with no aggressive substances present. The system
must not be subject to risk of mechanical damage, direct sunlight and working conditions outside allowed limits.
Prior locating and installation the user is advised to consult local fire and safety regulations.
IV.2
Safety Provisions
From the protection against electrical accidents point of view, the standard ČSN EN 50110-1 “Operating and Works
on Electrical Appliances” shall apply. The system may be installed only by persons informed at a minimum level
according to § 4 of the Decree No. 50/1978 Coll., or No. 51/1978 Coll. Such persons must not in any case interfere
with parts of circuits, with parts under cover connected with the mains where the danger of electrical accident is
imminent. The system must not be commissioned and put into operation without initial revision.
IV.3
System Installation
The system is designed for universal installation in all types of 19" rack cabinets. The system may only be installed
with its front panel facing the cabinet’s door into special sliders supplied with the unit. The system must be installed
in perfectly horizontal position. Sliders are screwed to the rack frame in the uppermost position of the cabinet. All
fixing points must be duly tightened. Prior installation, sufficient space for mounting inside the cabinet must be
provided. The system is attached to sliders by aligning the sliders with profiles on the unit. Once aligned, the unit
must be moved to end position until the safety brackets on both sides click; these provide safe positioning in the
rack cabinet. When removing the unit proceed vice versa: push the unit as far as it goes and disengage the brackets’
arms.
In order to improve response time of smoke detectors, the unit is equipped with adjustable extension holder
allowing to set overall depth of the device, thus allowing to position the detectors in suitable position in the
protected space. Adjustments require loosening the locking screws by Allen wrench No. 3 on both sides of the unit
and extending the whole holder with detectors to suitable depth. Take proper care while extending the holder
because cables to detectors are led through inside of the holder and careless handling may result in damage inside
the unit. When adjustments are finished, tighten the locking screws on both sides properly.
IV.4
Commissioning
Commissioning of LES-RACK-M and LES-RACK-S – the system is put into fully functional operation automatically by
connecting the mains power supply 250V/10A, while the key switch 22-OPERATION/TEST is in TEST position and the
main switch is in position 1 (ON). The system will perform necessary tests and checks and will enter the TEST mode
operation.
IV.5
System Mains Power Supply
Power supply cord of the device is designed as an extension cord 250V/1A to be plugged to a EURO-type socket in
the device. The socket is equipped with main ON/OFF switch and mains fuse box 0,315 A. Before putting the system
into operation the main switch must be switched to position 1 (ON).
IV.6
Switching Off the System
LES-RACK-M system is switched off by putting the key switch 22-OPERATION/TEST to position TEST, unplugging the
power supply cable or turning the main switch to position 0 (OFF). The system switches to operation using the
backup power supply source and by pressing the pushbuttons 23-RESET and 24-MUTE simultaneously for 20 sec the
system will switch off completely.
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Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
LES-RACK-S system is switched only after switching off the Master system by unplugging the power supply cable or
turning the main switch to position 0 (OFF). The system switches to operation using the backup power supply
source. If in this mode no communication with Master unit is established (Master must be switched off), the unit will
switch off automatically after 5 minutes.
Important notice: In case the system has been out of service for more than 6 months, it is necessary to connect all
devices to mains power supply for minimum 12 hours and allow the backup power supply sources to charge, thus
preventing irreversible damage.
IV.7
Installation of Cables
All electrical installations and works must be performed in compliance with codes of practice and legislation
applicable in given country. If possible, SELV-type cables should be led separately from high-voltage LV-type cables.
It is important to ensure proper cable routes, which would minimize mutual interference. In particular, a single
conduit should not contain both power cables with signal data cables of the system. To minimize the effects of EMC
interference all data wiring circuits should be wired with a twisted pair of conductors with a cross sectional area
suitable for the loading conditions. In areas where cabling may come into contact with high frequency interference,
such as portable radio transceivers etc., the output wiring cable should be of a twisted pair construction within an
overall screen. The screen should be duly terminated.
IV.8
Recommended type of Cables
To connect the parts of the system LES-RACK is required to use cable type JXFE-V 2x2x0.8. Cable with increased
resistance against flame spread and increased functional ability in fire at least 180 min. The cable is not designed for
permanent bending, the attachment must be always fixed. Permissible bending radius when leadership is 7.5 x cable
diameter, minimum temperature during installation must be + 5 °C.
IV.9
Installation of External Components
IV.9.1 Manual pushbutton – must always be installed outside the protected space or in vicinity of main
entrance. Two actions are always necessary to activate the pushbutton: to break the protection glass
and to push the button. When pressed, the manual pushbutton activates the extinguishing system
without any time delay. The pushbutton must be installed firmly, mounted into the solid structural or
building part.
IV.9.2 Door contact – must be installed at the entrances to the protected space in compliance with the
installation manual supplied with the door contact. In case the protected space has more entrances,
the door contacts must be connected in series, maximum five door contact switches in total.
IV.9.3 Visual and acoustic signalization – this signalization must be differentiated from all other
signalization devices used in the object. Must be located outside the protected space. It will be
activated in the beginning of time delay countdown after the system detects fire. The signalization
devices must be installed firmly, mounted into the solid structural or building part.
IV.9.4 External temperature sensor – shall be installed in the space where the temperature is to be
monitored. Temperature may be checked via serial interface. No function of the system is related
with the temperature sensor, it serves solely for temperature readouts.
IV.10
Connection of External Input and Output Devices
Terminal board in the rear part of the unit provides inputs and outputs to connect individual components.
Connections are described by the LES-RACK system wiring diagram with key to devices, which may be connected,
listed in the table below. Directions of communication are given in the diagram in chapter “System Type Versions”;
bi-directional communication between the system and its accessories means that both the auxiliary device and
connecting lines are monitored for fault-free operation and fault is indicated on the unit’s front panel. Cables must
be led according to instructions given in chapter “Installation of Cables”. All cables must be duly marked, fixed and
tightened in the terminal board (min. 4.3 Nm).
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Line Parameters
Line Function
Wire
Dimensioning
Pos.
Terminals
2-5
A-B
RS485 line
Communication
Master – Slave
0.8 mm2/max. 10 m
6
1-2
Loop C input, monitored
for faults
Manual actuation pushbutton
0.8 mm2/max. 10 m
7
3-4
NC input
Door contact
0.8 mm2/max. 10 m
8
5-6
Analogue value input
External temperature sensor
0.8 mm2/max. 10 m
9
7-8
Output monitored for
faults
Visual and acoustic signalization
0.8 mm2/max. 10 m
12
front panel
RS232
Service interface, local
17
9 – 10 - 11
Output SPDT – switching
contacts
Technology blocking
0.8 mm2/max. 10 m
18
12 – 13 - 14
Output NTSC – switching
contacts
HVAC blocking
0.8 mm2/max. 10 m
19
rear panel
10/100 Mbps
Service interface Ethernet
LES-RACK-M connection
LES-RACK-S connection
IV.10.1
Manual actuation pushbutton – connect input to terminals 1 (positive pole) and 2
(negative pole). Manual pushbutton type MHA 108.132.
IV.10.2
Door contact – connect line with parameters given in the table between terminals 3 and 4;
when door is closed, the contact switch must be closed. If this switch is open (door open),
extinguishing function is blocked. This status is indicated on the unit’s front panel. If the protected
space has more entrances, door contacts must be connected in series, maximum five door contact
switches in total.
IV.10.3
10-6.
External temperature sensor – terminals 5 and 6, resistance temperature sensor type KTY
IV.10.4
Output for visual and acoustic signalization – voltage-operated relay output connects to
terminals 7 (positive pole) and 8 (negative pole) for external acoustic or visual signalization. In
monitoring status the polarity is reverse and output voltage is 10.3V. During PRE-ALARM, ALARM and
FAULT, the polarity is inversed. Load: 24V/500mA resistive load.
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IV.10.5
Technology blocking – switching contacts 9, 10, 11 to control external device. Switching
contact values: 1A/24V VDC. Should an inductive load be controlled, the relay contacts must be
equipped with relevant arc control devices.
IV.10.6
HVAC blocking – switching contacts 12, 13, 14 to control external device. Switching
contact values: 1A/24V VDC. Should an inductive load be controlled, the relay contacts must be
equipped with relevant arc control devices.
IV.10.7
Communication line Master–Slave – type RS485 line is used solely for communication
between Master and Slave units. Communication fault is indicated on the unit’s front panel and
differentiated by individual system where the fault occurred (Slave 1-4).
LES-RACK-M connection
LES-RACK-S connection
V. CHECKS AND COMMISSIONING
V.1 Line Testing
V.1.1 To ensure safe and reliable operation of the system, it is advisable to perform lines insulation test.
Faults caused by cabling errors can be remedied at a later time only by troublesome actions and
higher costs. Tests may also be carried out section by section. Testing results shall be recorded.
V.1.2 Insulation test. Before measuring the insulation (leaking) resistance, check that all electrical
devices are unplugged from the line. Insulation resistance wire-to-wire and wire-to-ground should be
measured by special instrument calibrated for measuring the insulation resistance. Measured
insulation resistance of properly installed cabling should be higher than 10 MΩ. If the insulation
resistance is lower, such cable must be checked for damages.
V.2 Check of the Devices’ Fixed Position
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This check involves fixing of all parts of devices, parts of protected equipment, technology located inside the
protected space, cabling and joints, etc. Extinguishing agent discharged to the protected space may create flow
sufficient to move lightweight unfixed objects or possibly loosen improperly fixed components.
V.3 System Functionality Check
After installation and commissioning, comprehensive tests of functionality shall be performed. The following
functions are tested:
V.3.1
V.3.2
V.3.3
V.3.4
V.3.5
V.3.6
V.3.7
V.3.8
V.3.9
V.3.10
V.3.11
V.3.12
V.3.13
V.3.14
V.3.15
test of signalization components
signalization of fire on loops 1, 2, C (manual pushbutton)
signalization of pressure drop on loop PRESSURE
signalization of fault from loops 1, 2, C, PRESSURE (short circuit, cut-off)
signalization of fault from acoustic and visual signalization line
(short circuit, cut-off)
signalization of fault from solenoid valve line (short circuit, cut-off)
signalization of mains power supply fault (electrical mains)
signalization of backup power supply source fault (accumulator)
signalization of fuses fault
signalization of fault received from external device
check of outputs ALARM, PRE-ALARM 1 or 2
check of output FAULT
check of output TEST
check of output to control solenoid valve in extinguishing unit
check of output for external acoustic or visual signalization
V.4 Check of Detection Elements
Individual detectors (call points) connected to loops may only be checked in TEST mode. Detectors’ functionality is
checked by prescribed procedure using testing aerosol suitable for given type of installed detector. If check by
aerosol cannot be used for certain detectors, they shall be removed from their sockets (terminal board) and their
parameters shall be measured. Detectors that fail to pass the test, shall be replaced with new ones of the same type.
VI. OPERATION
VI.1
General Requirements
LES-RACK system is designed and produced for fully automatic operation. Therefore, all functions of the system are
carried out automatically and user cannot make any configuration alterations. Front panel offers indicating LEDs
providing information about operational statuses and current processes of the system. Unit’s cover may only be
opened by person authorized by the service organization. Electric shock hazard is imminent with cover open. System
user is obliged to appoint and arrange training for persons responsible for the system operation, operating
personnel and persons responsible for system maintenance who will in detail make themselves familiar with this
instruction manual. When training persons responsible for maintenance, due care must be focused on proper
procedures to ensure that during maintenance they will not activate the extinguishing system. To ensure safe and
faultless operation, never leave key inside the key switch 22-OPERATION/TEST. It is advisable to restrict or control
access of unauthorized persons to place where the extinguishing system is located.
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
VI.2
LES-RACK-M – Overview of Status LEDs and Control Elements
INTELLIGENT FIRE PROTECTION
ON
1-system ready
8-fault processor
15-fault valve
2-test mode
9-fault loop 1 or 2
16-fault slave 1
3-stop extinguishing
10-fault loop C
17-fault slave 2
4-preal loop 1 or 2
11-fault pressure
18-fault slave 3
5-alarm
12-fault mains
19-fault slave 4
6-general failure
13-fault battery
20-fault remote comm
14-fault acoustic
21-door contact
23-RESET
24-MUTE
7-memory fault
22-TEST
1
2
3
4
5
5
5
6
7
8
9
10
11
11
12
13
13
14
15
16
17
18
19
20
21
22
23
24
Operation
Test
Emergency switch-off
Pre-alarm 1 or 2
Alarm
Alarm
Alarm
Fault general
Fault memory
Fault processor
Fault 1 or 2
Fault C
Fault pressure
Fault pressure
Fault power supply
Fault ACCU
Fault ACCU
Fault signalization
Fault valve
Fault Slave 1
Fault Slave 2
Fault Slave 3
Fault Slave 4
Fault communication
Fault tamper
OPERATION/TEST
RESET
MUTE
gas pressure
M
LES-RACK
Extinguisher Module Master
Green is lit
Green blinks
Yellow is lit
Red is lit
Red is lit
Red blinks fast
Red blinks slowly
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
Yellow blinks
Yellow is lit
Yellow is lit
Yellow blinks
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
System status switch
Pushbutton
Pushbutton
Acoustic signalization: T-silence, S-continuous sound, P-intermittent tone (interval 1 s),
PP-slow intermittent tone (interval 10 s)
T
PP
P
S
S
S
S
P
P
T
P
P
P
P
P
P
T
P
P
P
P
P
P
P
P
T
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VI.3
LES-RACK-S – Overview of Status LEDs and Control Elements
INTELLIGENT FIRE PROTECTION
1-system ready
8-fault processor
15-fault valve
2-test mode
9-fault loop 1 or 2
16-unused
3-stop extinguishing
10-unused
17-unused
4-preal loop 1 or 2
11-fault pressure
18-unused
5-alarm
12-fault mains
19-unused
6-general failure
13-fault battery
20-fault data comm
7-memory fault
14-unused
21-door contact
23-unused
24-unused
gas pressure
LES-RACKs
Extinguisher SlaveModule
1
2
3
4
5
5
5
6
7
8
9
10
11
11
12
13
13
14
15
16
17
18
19
20
21
22
23
24
Operation
Test
Emergency switch off
Pre-alarm 1 or 2
Alarm
Alarm
Alarm
Fault summary
Fault memory
Fault processor
Fault 1 or 2
Not used
Fault pressure
Fault pressure
Fault power supply
Fault ACCU
Fault ACCU
Not used
Fault valve
Not used
Not used
Not used
Not used
Fault communication
Fault tamper
Not used
Not used
Not used
Green is lit
Green blinks
Yellow is lit
Red is lit
Red is lit
Red blinks fast
Red blinks slowly
Yellow is lit
Yellow is lit
Yellow is lit
Yellow is lit
T
T
T
T
T
T
T
T
T
T
T
Yellow is lit
Yellow blinks
Yellow is lit
Yellow is lit
Yellow blinks
T
T
T
T
T
Yellow is lit
T
Yellow is lit
Yellow is lit
T
T
Acoustic signalization: T-silence, S-continuous sound, P-intermittent tone (interval 1 s),
PP-slow intermittent tone (interval 10 s)
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VI.4
Description of LES-RACK Control Elements
1) OPERATION – is lit when the system is fully operational.
2) TEST – blinks in test mode. Acoustic signalization inside the unit indicates this mode by short tone sounding
once in 5 seconds. In test mode, all functions of the system are active, only discharge of extinguishing agent is
blocked.
3) EMERGENCY SWITCH-OFF – this LED is lit when extinguishing process is blocked, e.g. by opening the door
contact switch.
4) PRE-ALARM 1 or 2 – these LEDs are lit when loop 1 (detector 1) or loop 2 (detector 2) report alarm. Time delay
Tz counts down. Loop of external acoustic signalization and loops blocking technology and HVAC are active.
5) ALARM – extinguishing agent is being discharged.
a.
ALARM – LED blinks fast when time delay Tz counts down and loops 1+2 are active. This status may be
cancelled by pressing pushbutton 23-RESET, the system will return to monitoring status and will respond to
new alarm(s). Time delay Tz is a time, during which alarm can still be cancelled. Factory default setting is 30 s.
b.
ALARM – LED is lit when alarm signal comes from loop C (manual pushbutton loop) or in case of alarm from
loops 1+2 after the time delay Tz has expired. If the ALARM LED is lit, the output opening the solenoid valve is
active and extinguishing agent is being discharged. This status cannot be cancelled from the front panel.
c.
ALARM – LED blinks slowly after completed ALARM status, i.e. discharge. Alarm status can be reset after the
solenoid valve was opened by turning the key switch to TEST position and pressing the RESET pushbutton. All
LEDs on the front panel will light up for 1 second and simultaneously the internal acoustic signalization inside
the unit will sound.
6) FAULT – summary fault when LED of specific fault lights up. All individual faults are indicated by the acoustic
signalization inside the unit using intervals (sound patterns) listed in the table above.
7) FAULT MEMORY – this LED is lit when the backup memory checksum is not correct.
8) FAULT PROCESSOR – this LED is lit when the processor and hence the complete system fail critically. This is the
only LED on the front panel not controlled by the processor.
9) FAULT 1 or 2 – these LED are lit when loops 1 or 2 (smoke detectors 1 or 2) experience short circuit or become
disconnected.
10) FAULT C – this LED is lit when loop C (manual pushbutton loop) experiences short circuit or becomes
disconnected.
11) FAULT PRESSURE – this LED is lit when loop to storage cylinders experiences short circuit or becomes
disconnected. When pressure in storage cylinders drops below allowed limit, this LED will blink.
12) FAULT POWER SUPPLY – this LED is lit when the mains (230V) power supply fails.
13) FAULT ACCUMULATOR – this LED is lit when the backup power supply source is disconnected or fails. The LED
blinks when the accumulator is being charged.
14) FAULT ACOUSTIC SIGNALIZATION – this LED is lit when line to external acoustic signalization experiences short
circuit or becomes disconnected.
15) FAULT VALVE – this LED is lit when loop to solenoid valve on storage cylinders experiences short circuit or
becomes disconnected, simultaneously the coil impedance is being measured. Fault is reported when the coil
impedance increases by more than 30%.
16) FAULT SLAVE 1 – this LED is lit when a SLAVE module is present in the system and indicates its faulty condition.
Detailed information about specific fault on the SLAVE module is indicated on its own front panel. Fault
statuses are also recorded to history log memory. This LED indicates also fault on communication line between
Master and Slave.
17) FAULT SLAVE 2 – this LED is lit when a SLAVE module is present in the system and indicates its faulty condition.
Detailed information about specific fault on the SLAVE module is indicated on its own front panel. Fault
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statuses are also recorded to history log memory. This LED indicates also fault on communication line between
Master and Slave.
18) FAULT SLAVE 3 – this LED is lit when a SLAVE module is present in the system and indicates its faulty condition.
Detailed information about specific fault on the SLAVE module is indicated on its own front panel. Fault
statuses are also recorded to history log memory. This LED indicates also fault on communication line between
Master and Slave.
19) FAULT SLAVE 4 – this LED is lit when a SLAVE module is present in the system and indicates its faulty condition.
Detailed information about specific fault on the SLAVE module is indicated on its own front panel. Fault
statuses are also recorded to history log memory. This LED indicates also fault on communication line between
Master and Slave.
20) FAULT COMMUNICATION
a.
b.
REMOTE COMMUNICATION FAULT (Master) – this LED lights up to indicate faulty status of communication
with remote supervising center (Ethernet, GPRS), or possibly with service software.
DATA COMMUNICATION FAULT (Slave) – this LED lights up to indicate faulty status of serial data line
between Master and Slave.
21) DOOR CONTACT – this LED lights up when the door contact switch on monitored door opens. When this
contact is open (door open), extinguishing function is blocked.
22) Key switch OPERATION/TEST – in TEST position the system performs all operations and functions as in the
OPERATION status – only the function of powering the solenoid valve, i.e. allowing the extinguishing agent to
discharge, is disabled. Status OPERATION is fully monitoring condition. Upon switching to this status, the
system automatically tests all loops, testing takes roughly 30 seconds. Alarm status can be reset after the
solenoid valve was opened by turning the key switch to TEST position and pressing the RESET pushbutton. All
LEDs on the front panel will light up for 1 second and simultaneously the internal acoustic signalization inside
the unit will sound.
23) RESET pushbutton – resets alarms reported by loops 1 and 2. In case the cause of alarm at loops 1 and 2
persists, alarm status will be automatically re-established once the pushbutton is released. If ALARM status is
activated by both loops or by manual pushbutton, holding the RESET pushbutton interrupts discharging the
extinguishing agent. Discharging will continue immediately after the pushbutton is released.
24) MUTE pushbutton – cancels the system’s both internal and external visual and acoustic signalization.
VII. MAINTENANCE
VII.1
General Provisions
System user must observe scheduled checks, prepare a service plan and keep records on checks and repairs.
Permanent ability of the LES-RACK system to maintain effective efficiency fully depends on adequate service
procedures with regular testing. Prescribed checks of the LES-RACK system may only be performed by persons with
required qualification. Such persons must not in any case interfere with parts of circuits under cover connected with
the mains because here the danger of electrical accident is imminent. Service works may only be carried out by duly
and positively trained employees of service organization or manufacturer. Prior starting any check of the LES-RACK
system, person responsible for the system operation must be informed beforehand. Prior starting any check and
putting the system into operation it is necessary to prevent undesired activation of related equipment, if applicable,
such as power supply shut down, closing of fire dampers, air-conditioning units. The system must also undergo
checking always after each activation or when operational limits have been exceeded.
VII.2
Checks Performed by User
Consistent observation of scheduled checks and maintenance will allow finding possible faults of the LES-RACK
system in early stage. This allows to remedy such faults before it will be necessary for the system to activate
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automatically, thus ensuring perfect functionality in case of fire. Each completed check must prove compliance with
general requirements and technical parameters listed in this manual.
VII.2.1 Weekly check
Visually check whether the risks and tightness of the protected space have not been altered, which might
compromise the system’s extinguishing efficiency. Visually check whether all operational devices and
system components are on due places and show no damage. Check pressure gauges and devices
monitoring pressure drop in storage cylinders whether measured values comply with required technical
parameters.
VII.2.2 Monthly check
Check whether all personnel who might possibly work with the system are duly trained and have proper
qualification for such activities. In particular, check whether newly employed persons have received
appropriate training to use and operate the system.
VII.3
Checks of the Protected Space
Minimum once a month check thoroughly whether no leaks in the enclosure of the protected space occurred and/or
that no other changes took place, which might affect the hold time and extinguishing efficiency. If checks reveal that
protected space was subject to changes of volume or type of hazard, or both, the extinguishing system must be redesigned to provide original level of protection as a standard. When making any changes in protected space it is
advised to check type of hazard and consider changes in volume. This is recommended to be checked regularly to
ensure that required extinguishing agent concentration will be reached and maintained.
VII.4
Checks Performed by Service Organization
Service works may only be carried out by duly trained employees of service organization qualified in electro
technical sphere according to applicable regulations.
VII.4.1 Quarterly check
All electrical detection and alarm systems are tested according to recommendations in applicable national
standards.
VII.4.2 Semi-annual check
The following checks and inspections are performed.
All control valves are checked for proper manual operation and subsequently whether they work correctly
for automatic operation. Check the unit’s surface for signs of mechanical damage or unauthorized
tampering.
VII.4.3 Annual check
1. Visually check the following
a. check the unit’s location
b. check serial number
c. check fixture in place
d. check accessibility
e. clean the system from dirt
2. Check system pressure gauge
a. visually check pressure on the pressure gauge, required value is listed in table with main technical
parameters
b. check pressure gauge seal
3. Check pressure switch
a. check transmission of signal to control unit
b. check functionality of pressure switch using calibrated instrument
c. check pressure switch seal
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
4. Check communication with the main fire alarm control panel system (FACP)
a. check transmission of relevant signals
5. Check and test automatic detection and manual activation of extinguishing action
a. check reporting fault of monitoring line by removing a detector from its socket
b. check function of smoke detectors
c. check function of external fire detectors, if applicable
d. check manual pushbutton function using testing key
e. check impedance of monitoring line by measurements
6. Check and test detectors, check pressure in extinguishing agent storage cylinders
a. visually check pressure switches
b. check function of pressure switches, simulate pressure drop condition
(on socket of the switch)
c. check impedance of monitoring line by measurements
7. Check and test output devices
a. visually check signalization and output components
b. check function of visual and acoustic signalization
c. simulate extinguishing condition
d. check hold force of solenoid valves coil
e. check impedance of monitoring line of solenoids
VII.5
Checks and Service via Serial Interfaces
Connection via RS232 line to portable PC (notebook) and testing for one hour by service software, including
evaluation. Connection via crossed cable (lap link). Service notebook may be connected only when the system is
powered by accumulator. For safety reasons and protection of the system the system must not in any case powered
by mains.
Connection via Ethernet line by LAN cable (Ethernet) and using service software.
Each performed check, repair, or possibly any other action on the system, must be documented, clearly recording
performed actions, unit’s condition before and after the action, identification data about persons who performed
the actions and protocol on functionality after the checks are accomplished.
VII.6
List of Accessories and Spare Parts
VII.6.1 List of accessories and spare parts supplied to user
1
2
3
4
5
6
7
8
9
10
11
12
Ordering Number
LES-52LEFK14071
LES-14LE00100253
LES-14LE00100255
LES-52LEFK14071
LES-52LEFK1411
LES-14LE00100254
LES-52LEFK1408
LES-52LEFK14081
LES-52LEFK1424
LES-14LE00100111
LES-14LE00100251
LES-14LE00100252
Description
Backup power supply source
Spare lock OPERATION/TEST
Smoke detector photoelectric
Smoke detector optical
Socket for smoke detector
Door contact switch, tamper
Manual pushbutton
Manual pushbutton, heavy-duty
Signalization light
Checking pressure gauge
Power supply cord EURO socket
Power supply cord UPS socket
VII.6.2 List of accessories and spare parts supplied to service organization
Designation / type
GP 1272
OKB
MHG 231.070
MHY 734.029
MHA 108.132
MHA 183
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
1
2
3
4
VIII.
VIII.1
Ordering Number
LES-14LE00100261
LES-14LE00100265
LES-14LE00100296
LES-14LE00100298
Description
Fire extinguishing unit – complete
Control unit – complete
Testing aerosol
Boom for checking smoke detectors
Designation / type
ENVIRONMENTAL ASPECTS
System’s Life-Cycle
Systems older than 10 years, systems with irreparable fault or systems where the serial number and year of
production cannot be safely identified must be put out of service in compliance with the Waste Disposal Act or
directly at the manufacturer’s premises. Rules for disposal with electric and electronic waste are set forth by
Directive 2002/96/EC of the European Parliament and of the Council.
VIII.2
Environmental Impact
Dispose the system by handing it over to a collection point for recycling the electric and electronic waste. In the
European Union member countries it is possible to use various collection systems for disposing the electric and
electronic products. By ensuring proper disposal you will help prevent occurrence of potential hazards to
environment and human health possibly resulting from improper handling with wastes. Where their dimensions
allow, all parts carry printed symbols of materials used for production as well as for recycling. The system is
equipped with maintenance-free, gas-tight lead accumulators with long service life. End user is responsible for
returning the used batteries back. Disposal of batteries in household waste is forbidden. Batteries containing
hazardous substances are marked by symbol indicating the ban to liquidate them as a household waste. Important
heavy metals are marked as follows: Cd=cadmium, Hg=mercury, Pb=lead. With respect to protection of the
environment, the batteries (accumulators) must be disposed of by means of dedicated collection
networks, by means of authorized service organization or directly at the manufacturer’s premises.
Do not throw batteries in fire, they may explode. Batteries must be neither opened, nor subject to
any kind of tampering. Leaking electrolyte is dangerous to skin and eyes, it may be poisonous. The
system’s packaging is made of paper carton (PAP), both the packaging and metal parts may be
recycled.
VIII.3
Material Safety Data Sheet – Extinguishing Agent HFC236fa
==========================================================
CHEMICAL PRODUCT / COMPANY IDENTIFICATION
==========================================================
Material Identification
CAS No. 690-39-1
Formula CF3-CH2-CF3
CAS name 1,1,1,3,3,3-hexafluoropropane
Trade Names
HFC-236fa
HEXAFLUOROPROPANE
Company Identification
Company name: ZHEJIANG CHEH-TECH GROUP CO. LTD.
Street: No. 926 XI XI ROAD
City: HANGZHOU
State: ZHEJIANG
Province: CN
ZIP Code: 310023
==========================================================
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
COMPOSITION/INFORMATION ON INGREDIENTS
==========================================================
Ingredients
Material CAS Number CAS 690-39-1
1,1,1,3,3,3-HEXAFLUOROPROPANE (HFC-236fa) 99-100
==========================================================
HAZARDS IDENTIFICATION
==========================================================
Potential Health Effects
Based on animal data, exposure to HFC-236fa by inhalation may cause suffocation, if air is displaced by vapours, and
irregular heart beat with a strange sensation in the chest, “heart thumping”, apprehension, lightheadedness, feeling
of fainting, dizziness, weakness, sometimes progressing to loss of consciousness and death.
HFC-236fa may cause frostbites if liquid or escaping vapour contacts the skin.
HFC-236fe may cause “frostbite-like” effects if the liquid or escaping vapours contact the eyes.
Ingestion is not considered a probable route of exposure for HFC-236fa.
Carcinogenicity Information
None of the components present in this material at concentrations equal to or greater than 0.1% are listed by IARC,
NTP, OSHA or ACGIH as a carcinogen.
==========================================================
FIRST AID MEASURES
==========================================================
First Aid
INHALATION
If inhaled, immediately take the affected person to fresh air. Keep the person calm. If not breathing, give artificial
respiration. If breathing is difficult, apply oxygen. Call a physician.
SKIN CONTACT
Flush affected area with lukewarm water. Do not use hot water. If frostbite has occurred, call a physician.
EYE CONTACT
In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Call a physician.
INGESTION
Ingestion is not considered a potential route of exposure.
Notes to Physicians
THIS MATERIAL MAY MAKE THE HEART MORE SUSCEPTIBLE TO ARRHYTHMIAS.
Catecholamines such as adrenaline, and other compounds having similar effects, should be reserved for
emergencies and then used only with special caution.
==========================================================
FIREFIGHTING MEASURES
==========================================================
Flammable Properties
Will not burn. Not a fire or explosion hazard. HFC-236fa is used as a fire extinguishant.
Hazardous gas/vapour produced in fire is hydrogen fluoride.
Extinguishing Media
Use media appropriate for surrounding material.
Fire Fighting Instructions
(For example: when HFC-236fa is exposed to fire from surrounding material) - Wear self-contained breathing
apparatus. Wear full protective equipment. Cool tank/container with water spray.
==========================================================
ACCIDENTAL RELEASE MEASURES
==========================================================
Safeguards (Personnel)
NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL) sections before proceeding with clean-up. Use
appropriate PERSONAL PROTECTIVE EQUIPMENT during clean-up.
Keep upwind of leak - evacuate until gas has dispersed
Accidental Release Measures
Ventilate area before re-entering.
==========================================================
HANDLING AND STORAGE
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
==========================================================
Handling (Personnel)
Do not breathe gas. Do not allow to get in eyes, on skin, or on clothing.
Wash thoroughly after handling.
Handling (Physical Aspects)
Keep away from sparks, flames and hot (glowing) surfaces.
Storage
Keep container in a clean, dry place. Keep container tightly closed. Do not heat above 52 degrees C (126 degrees F).
==========================================================
EXPOSURE CONTROLS/PERSONAL PROTECTION
==========================================================
Engineering Controls
Use only with adequate ventilation. Keep container tightly closed. Vapours of the compound are heavier than air,
posing a hazard of asphyxia if they are trapped in enclosed or low places.
Personal Protective Equipment
EYE/FACE PROTECTION
Wear safety glasses or coverall chemical splash goggles.
RESPIRATORS
Wear NIOSH approved respiratory protection, as appropriate.
PROTECTIVE CLOTHING
Wear impervious clothing, such as gloves, apron, boots, or whole bodysuit as appropriate.
Exposure Guidelines, Exposure Limits HFC-236fa
PEL (OSHA): None Established
TLV (ACGIH): None Established
AEL* (DuPont): 1000 ppm, 8 and 12 hours TWA
WEEL (AIHA): 1000 ppm, 8 hours TWA
* AEL is DuPont’s Acceptable Exposure Limit. Where governmentally imposed occupational exposure limits which
are lower than the AEL are in effect, such limits shall take precedence.
==========================================================
PHYSICAL AND CHEMICAL PROPERTIES
==========================================================
Physical Data
Boiling point: - 1.4 °C (29.5 °F) at 760 mm Hg
Vapour pressure: 272.4 kPa at 25 °C (77 °F)
Melting point: -98 °C (-144 °F)
Freezing point: -93.6 °C (-136.5 °F)
Form: Liquefied gas
Colour: Colourless
Density: 1.370 g/cm3
==========================================================
STABILITY AND REACTIVITY
==========================================================
Chemical Stability
Stable
Incompatibility with Other Materials
Incompatible with strong bases, metallic sodium, potassium, lithium.
Decomposition
Decomposes in open flames and hot (glowing) surfaces.
Hazardous gas/vapour produced in fire is hydrogen fluoride.
Polymerization
Polymerization will not occur.
==========================================================
TOXICOLOGICAL INFORMATION
Animal Data
HFC-236fa:
Inhalation 4 hours LC50: > 457,000 ppm in rats
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
Single exposure by inhalation caused narcosis and cardiac sensitization, a potentially fatal disturbance of heart
rhythm associated with a heightened sensitivity to the action of epinephrine. Repeated exposures caused a reduced
startling response in rats. No other significant toxicological effects were observed.
No-Observed-Adverse-Effect-Level (NOAEL): 20,000 ppm.
Limited studies on HFC-236fa do not suggest developmental toxicity. Specific studies to evaluate the effect on
female reproductive performance have not been conducted; however, limited information obtained from studies on
developmental toxicity does not indicate adverse effects on female reproductive performance. Tests have shown
that this material does not cause genetic damage in bacterial or mammalian cell cultures. No animal data are
available to define carcinogenic effects of HFC-236fa.
ECOLOGICAL INFORMATION
Ecotoxicological Information
AQUATIC TOXICITY:
96 hour LC50 – Zebra fish: 292 mg/l
96 hour LC50 – Freshwater algae: > 186 mg/l
48 hour LC50 – Daphnia magna: 299 mg/l
DISPOSAL CONSIDERATIONS
Waste Disposal
Treatment, storage, transportation and disposal must be carried out in accordance with applicable federal,
state/provincial and local regulations.
TRANSPORTATION INFORMATION
OTHER INFORMATION
NFPA, NPCA-HMIS
NPCA-HMIS Rating
Health: 1
Flammability: 0
Reactivity: 1
The data in this Material Safety Data Sheet relate only to the specific material designated herein and do not relate to
use in combination with any other material or in any process.
End of Material Safety Data Sheet
IX. WARRANTY
IX.1
Warranty Terms and Conditions
The producer grants to direct user a warranty for the period of 24 months from the date of purchase of the system.
Liability of the company CONTEG, s.r.o. in case the company fails to repair system under this warranty even after
reasonable number of attempts will be limited to obligation to replace the system – this replacement shall be the
sole and exclusive remedial act for violating the warranty. Company CONTEG spol. S r.o. shall under no
circumstances be responsible for any special, accidental or subsequent damages caused by violating the warranty,
breaching the contractual relation or negligence. Such damages shall include lost profit, loss of product or related
part, investment costs, costs for alternate equipment or replacement, downtimes or time of the purchaser, claims
by third parties and damages to property. Warranty shall not apply to faults caused by external conditions as well as
to mechanical damage caused by transport or those attributable to user. Warranty is void also in case the system is
installed or used in conflict with instruction manual, assembly and commissioning instructions, and/or in case of
faults caused by action of the user or possibly any other person without relevant authorization issued by the
producer or failing to comply with requirements for operation stated in the instruction manual.
IX.2
Intellectual Property
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
This documentation is protected by copyright. All related rights are reserved. Such rights cover in full or in part
translations, copying, using images and diagrams, reproduction by photo-mechanical or other means and recording
by data processing systems. The producer reserves the right to implement technical changes without prior notice.
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
IX.3
Statement of Compliance
Statement of Compliance
Producer:
CONTEG spol. s r.o.
Address:
Na Vítězné pláni 1719/4
140 00 Praha
Czech Republic
I hereby declare that the product fire alarm control panel LES-start-1 with integrated system of automatic fire
detection and fire extinguishing unit filled with clean extinguishing agent HFC-236fa type:
LES-RACK-M
and
LES-RACK-S
complies with requirements of the below mentioned Directives of the European Parliament and of the Council as
amended:

EMC Directive 2004/108/EC

LV Directive 2006/95/EC
Standards and technical regulations used as a ground for compliance assessment:
EN 61000-3, EN 61000-6, EN 50130-4, EN 55022-1, EN 60950-1
Related standards:
EN 60068-1, EN 60529, EN 60721-3-3, EN 54-7, EN ISO 228-1, ISO 7-1, EN ISO 9001, ISO 14520-11
I hereby as the producer declare that the product is safe provided that conditions for use mentioned above are
observed. Simultaneously, we have adopted measures to ensure compliance of all products introduced to the
market with technical documentation. Based on the above-mentioned, the system was marked by compliance mark
in the year 2008.
In Prague, date May 23, 2016
……………………………………
Vít Voláček
executive manager
CONTEG, spol. s r.o.
Na Vítězné pláni 1719/4, 140 00 Prague 4, Czech Republic
IX.4
Certificate of Warranty
Certificate of Warranty
WARRANTY TERMS AND CONDITIONS
Customer is entitled to warranty services only against duly filled-in original of Certificate of Warranty or purchase
payment receipt. Producer grants to consumer warranty for the period of 24 months commencing from the date of
purchase stated in the Certificate of Warranty or purchase payment receipt. Warranty period will be prolonged by
the period from accepting the product for repair to the date when the customer is obliged to collect the product.
Warranty repairs, including description and duration, shall be confirmed in the Certificate of Warranty. Prior
shipping from the factory, the product is duly checked and tested. It must be installed and used in compliance with
the instruction manual. Claims shall be reported in writing and are conditioned by submitting duly filled-in
Certificate of Warranty or purchase payment receipt and description of fault. Warranty is void if the product has
been used in conflict with instruction manual, if data recorded in Certificate of Warranty or purchase payment
receipt vary from those on product, or if the product cannot be identified by Certificate of Warranty or purchase
payment receipt. Warranty is void if unauthorized person performed any action on the product or if its damage is
attributable to external causes, such as dirt, improper use, unsuitable environment, force majeure or if due care for
the product was neglected.
NOTICE TO CONSUMER
Upon accepting the product, however no later than before its installation, the consumer is obliged to make itself
familiar with use and operation of the system as described in the instruction manual, check accuracy and legibility of
data filled in the Certificate of Warranty and whether they match those on the product. Any claims thereafter
cannot be considered.
System type: LES-RACK-S
PRODUCTION DATE
SERIAL NUMBER
CHECKED BY
RECORDS OF PURCHASE
DATE OF PURCHASE
FILL IN DAY, MONTH, YEAR
VENDOR
STAMP AND SIGNATURE
Warning: The author of this document, company CONTEG spol. s r.o., is trademark for the right to change the
content without any previous notice.
This document is protected by copyright ©2016
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