Schuch nD867.12L Series User manual

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Adolf Schuch GmbH
Lichttechnische Spezialfabrik
Mainzer Str. 172, D-67547 Worms am Rhein
Postfach (P.B.) 2145, D-67511 Worms
Phone: [phone] Internet: www.schuch.de
Telefax: +49 6241/4091- 29 E-Mail: [e-mail]
- Operating Instructions
Explosion-proof LED Emergency Light Fitting
of series
nD867. 12L .. / . / .
The safety of people and equipment in hazardous areas depends on the
observance of all safety standards. Exact knowledge about all applicable
regulations and standards is mandatory for installation maintenance and
repair of explosion proof equipment, especially
the determinations of IEC/EN 60079-14 and IEC/EN 60079-17 for
maintenance of explosion-proof appliances
the generally accepted rules of the technical side
the national rules for prevention of accidents and for safety standards
the safety instructions of these operating instructions
the characteristic data on the type plate and the instruction plates

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1. Safety Instructions
Mounting and installation must be done in accordance with the respective regulations.
The light fitting must be protected against overvoltage, overcurrent, short circuits and other
electrical failures.
The light fitting must be operated in an undamaged condition only.
It is allowed to open the light fitting in a non-explosive (non hazardous) atmosphere only.
The non-stationary use of the light fitting as well as any other inappropriate usage is prohibited.
The operation of the light fitting is allowed within its assessment thresholds only.
In regard to the minimum and maximum admissible ambient temperature potential sources of cold
and heat (e.g. direct heat or solar radiation, cooling units) have to be considered.
If the light fitting is subject to a special application that is influenced chemically, mechanically,
thermically or electrically or if the light fitting will be subject to any kind of vibrations, it is highly
recommended to consult the Adolf Schuch GmbH before starting the installation.
Every structural modification will cause dangerous situations and consequently the certification of
this light fitting will be null and void.
Caution - Risk of electrostatic discharge! Fitting to be cleaned with damp cloth only!
In areas with risk of accidental electrostatic charge (e.g. by passing by) the light fitting must be
protected by appropriate measures.
The light fitting is not allowed to be installed in process areas where strong electrical fields may
occur (i.e. HV Sparkling Electrodes or Particle Streams). Reason is to avoid any electrostatic
charge of the light fitting itself.
Replace damaged explosion-proof parts by original spare parts from the Adolf Schuch GmbH only.
The LED-modules of this light fitting must be replaced by A. Schuch GmbH, by a service technician
who is instructed from Schuch or by any other person with equivalent qualification only.

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2. Operating Advice
Because of the chemical resistance use only a damp cloth for cleaning the light fitting. If necessary
with a mild and solvent-free cleaning agent.
Against penetration of humidity into the light fitting a special explosion-proof breathing gland is often
quite effective. It is allowed to use a breathing gland which is released by the Adolf Schuch GmbH
only. If using a breathing gland please observe the general informations of it's operation
instructions.
Any application of the light fitting that is incorrect or even forbidden will lead to the fact that the
manufacturer's warranty is lost.
Through-wiring in lighting model nD867. 12L60 / . / . without battery box lowers the permitted
ambient temperature of the light from +40 °C (without through-wiring) to +35 °C (with through-
wiring). Please also refer to the corresponding instructions on the type plate of the light fitting.
Opening the LED compartment is allowed for repair work only.
LED are sensitive electronic components. Please ensure that the LED are protected against
mechanical and electrostatic attacks whenever the light fitting is open. For this reason the LED
must not be touched either.
Due to harmful gases and other corrosive substances (e.g. ammoniac- sulphur-, or chlorine
compounds) it may come to damages of the LEDs. Depending on the substance, the concentration,
the temperature and the dwell time, damages up to total black-out are possible. This may occur
also to fittings with high degree of protection. The suitability of the light fitting for the respective
application can only be checked by running a test at site.
Due to a high inrush current when switching on the light fitting, the number of light fittings which can
be connected to a single fused circuit is limited (Possible number of light fittings per circuit breaker
see Chapter 3, Technical Data).
All DALI dimmable light fittings have two additional terminals marked „DA“. Lines to the control
terminals must be mains voltage proof.
LED modules are built up of a series connection, which itself is built up of parallel connections of
single LEDs. Failures of LEDs do not necessarily lead to a change in the power consumption,
which is recognized by the emergency light unit.
Version with battery box
Version
without battery box

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2.1 Use at low temperatures
The safety of the light fitting is warranted between -30°C up to +40°C/+55°C.
At temperatures below 0 °C, it must be taken into account that the emergency battery will take longer
to charge and the operational life of the emergency lighting mode will be reduced. Testing the duration
of the battery life in lower ambient temperatures can therefore lead to a misleading result.
The battery life test should be repeated manually at a more appropriate time (please refer to the
section about operational life testing in Chapter 2.2).
2.2 Automatic test of the emergency light unit
The functionality of the light fitting and the operational life in emergency lighting mode is tested
automatically by the emergency light unit at specified intervals. A blinking green light is emitted by the
signal LED while the test is being carried out.
Functionality test
Functionality tests are carried out at 7 day intervals and last one minute.
The first test of functionality is carried out one hour after the light fitting has been setup. Before this can
happen, it is necessary to separate the emergency light unit built into the light fitting from the mains
power supply before switching on the power, and the emergency battery must have been charged
continuously for one hour.
Operational life test
During the operational life test, the emergency light unit checks whether the capacity of the emergency
battery is sufficient for the indicated nominal operating time should the emergency light being required.
For the operational life test to be carried out, the emergency battery must be fully charged and
connected. For special versions with the option to deactivate the emergency light function, the remote
cutoff switch must also be closed.
Automatic operational life tests:
The first operational life test carried out automatically by the emergency light unit takes place at
random within a period of 5 to 28 days after the light fitting has been setup. All further automatic
operational life tests are then carried out at 52 week intervals, so long as the energy supply to the
emergency light unit was not interrupted during this period.
A complete interruption of the energy supply to the emergency light unit occurs when the outage of the
power supply exceeds the specified nominal operating time for the emergency light.
Reconnecting the power supply to the emergency light unit after a complete interruption will lead to a
new setup procedure of the emergency light with a subsequent operational life test between 5 and 28
days later.
Should a fault in the battery capacity be indicated before a complete interruption of the power supply to
the emergency light unit, a operational life test will be carried out within 24 hours of reconnection to the
power supply.
If the prerequisites stated above for carrying out an automatic operational life test are not satisfied, the
test will be deferred until these requirements are fulfilled.
Automatic operational life tests that could not be completed successfully will be repeated once after 60
hours, subject to the same prerequisites stated above.
Manual operational life tests:
Operational life tests can be triggered manually in 2 ways. Models with battery box can be triggered
manually in 3 ways:
1. By switching the power supply off and on at the L1 terminal.
2. By switching the supply on and off at the L1`terminal.
Switch the power supply at the L1 terminal resp. the supply at L1' terminal off and on again 5 times.
Leave at least 2 seconds between each switch.
In both cases, the sequence of switches must be completed within 60 seconds.
Under the above mentioned preconditions, after a correctly performed switching sequence at L1'
terminal, an operational life test is immediately initiated.
If the switching sequence is correctly carried out on L1 terminal, an operational life test is initiated after

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the time that is required to fully charge the battery after the switching sequence.
If the switch sequence has not been carried out correctly, or the aforementioned requirements have
not been satisfied, the operational life test will not be conducted.
If there was an error in the switching procedure, the entire switch sequence can only be repeated after
60 seconds have elapsed.
The points at which regular operational life tests are carried out are not affected by conducting a
manual test using either of these methods.
3. For models with a battery box by means of disconnecting and reconnecting the battery:
Open and close the lid of the battery box twice within a 60-second period. Opening and closing the
case must occur within 10 seconds of each other.
If this procedure is done correctly, immediately after the battery box is closed for the second time, the
signal LED will display an acknowledgement light. The five-second long red-green acknowledgement
light confirms that a operational life test will be conducted 12 hours later.
Should a battery capacity fault be present when the acknowledgement light is displayed, more
operational life tests will then be carried out at 52 week intervals. If no fault was detected in the battery
capacity, the interval until the next regular operational life test is unaffected.
During the functionality and operational life tests, the light fitting will switch on even if it
was previously switched off!
2.3 Ascertainable faults and reset of the display
LED failure
If a fault in the LED is detected by the emergency light unit during a functionality test, the LEDs will be
switched off and the fault will be indicated by a permanent red light on the signal LED.
An LED fault will be reset if a functionality test produces a positive result or if the emergency light unit
is completely separated from the battery and power supply.
Battery capacity failure
If the emergency light unit detects during a operational life test that the capacity of the emergency light
battery is insufficient to maintain the light fitting for the nominal operating time in the case of an
emergency, the signal LED will display a red blinking light.
An emergency battery that no longer has sufficient capacity must be replaced immediately (see
Section 6.3).
The display indicating a fault in the battery capacity can only be reset by means of a successful
operational life test.
Battery contact failure
When the electrical connection between the emergency light unit and the emergency battery is broken,
the signal LED will display a red flashing light.
A battery contact failure and its signal are automatically reset as soon as the connection between the
emergency light unit and the battery is re-established.