MEDC XB11 Technical Manual
Text of the manual
Technical Manual for the Xenon Beacon XB11
Notice technique - Feu au xénon XB11
Technisches Handbuch für das Xenon-Blinklicht XB11
Manual Técnico para o Alarme Visual de Xénon XB11
Техническое руководство по ксеноновому
проблесковому маяку модели ХВ11
Please note that every care has been taken to ensure the accuracy of our technical manual. We do not, however, accept responsibility for
damage, loss or expense resulting from any error or omission. We reserve the right to make alterations in line with technical advances and
industry standards.
Toutes les précautions ont été prises pour garantir la précision de cette notice technique. Toutefois, nous ne saurions accepter de responsabilité
à l’égard des dégâts, pertes ou frais résultant d’une quelconque erreur ou omission. Nous nous réservons le droit d’apporter d’éventuelles
modifications pouvant résulter de progrès techniques ou de l’évolution des normes industrielles.
Wir möchten Sie darauf hinweisen, dass wir große Sorgfalt darauf verwendet haben, die Richtigkeit unserer technischen Anleitung zu
gewährleisten. Wir übernehmen jedoch keine Verantwortung für Schäden, Verluste oder Kosten, die sich aus einem etwaigen Fehler oder
einem Versäumnis ergeben. Änderungen die dem technischen Fortschritt bzw. neusten Industrienormen entsprechen, behalten wir uns vor.
Observe que todos os cuidados foram tomados para assegurar a exatidão de nosso manual técnico. No entanto, não nos responsabilizamos
por danos, perdas ou despesas resultantes de qualquer erro ou omissão. Reservamo-nos o direito de efetuar alterações em linha com os
avanços tecnológicos e as normas da indústria.
Были приложены максимальные усилия, чтобы обеспечить точность информации, приведенной в данном техническом
руководстве. Тем не менее, мы снимаем с себя всякую ответственность за ущерб, убытки и затраты, которые могут
иметь место вследствие ошибки или недосмотра. Компания оставляет за собой право вносить изменения в
соответствии с техническими усовершенствованиями и требованиями отраслевых стандартов.
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These certified beacons have been designed for use in potentially explosive gas and dust atmospheres and harsh environ-
mental conditions. The glass reinforced polyester enclosures are suitable for use offshore or onshore, where light weight
combined with corrosion resistance is required.
The beacon housing is manufactured completely from a U.V. stable, glass reinforced polyester. Stainless steel screws and
mounting bracket are incorporated ensuring a totally corrosion free product.
Units can be painted to customer specification and supplied with indentification labels.
2.0 INSTALLATION
General
When installing and operating explosion-protected equipment, requirements for selection, installation and operation should
be referred to eg. IEE Wiring Regulations and the ‘National Electrical Code’ in North America. Additional national and/
or local requirements may apply.
Ensure that all nuts, bolts and fixings are secure.
Ensure that only the correct listed or certified stopping plugs are used to blank off unused gland entry points and that the
NEMA/IP rating of the unit is maintained. MEDC recommend the use of a sealing compound such as HYLOMAR PL32
on the threads of glands and stopping plugs in order to maintain the IP rating of the unit.
The unit can either be directly mounted using the inserts moulded into the back of the enclosure (standard), or a back-
strap (optional) can be fixed to the base of the unit thus giving an optional mounting position for when direct mounting
is deemed unsuitable.
There are 2 off M5 inserts in the base of the enclosure for direct mounting.
Please note: for direct mounting, observe the following formula to determine length of fixing screw required:-
Length of screw = Thickness of mounting surface + 10mm
There are 2 off Ø8.5mm mounting holes in the optional backstrap. These have been designed to accept an M8 screw
or bolt
MEDC recommend the use of stainless steel screws.
Cable Termination
CAUTION: Before removing the cover assembly, ensure that the power to the unit is isolated.
Unscrew and remove the 6 off M5 screws (4.0mm hexagon key) holding the cover assembly to the base. Keep in a safe,
accessible location as they are non-captive.
Twist the cover assembly gently clockwise and anti-clockwise, whilst pulling it away from the base. Remove to gain access
to the interior.
Cable termination should be in accordance with specifications applying to the required application. MEDC recommends
that all cables and cores should be correctly identified. Please refer to the wiring diagram provided with the product.
Ensure that only the correct listed or certified cable glands are used and that the assembly is shrouded and correctly
earthed.
All cable glands should be of an equivalent NEMA/IP rating to that of the unit and integrated with the unit such that this
rating is maintained.
The internal earth terminal, where fitted, must be used for the equipment grounding connection.
Once termination is complete, carefully replace the cover assembly back onto the base, avoiding damage to the mating
surfaces. Replace the 6 off M5 screws (4.0mm A/F hexagon key) into the holes in the cover assembly and tighten evenly.
Ensure the O-ring is seated correctly on the cover during re-assembly. Ensure the required maximum gap of 0.2mm is
maintained between the cover and the base once assembled.
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The operating voltage of the unit is stated on the unit label. The unit can be powered directly or initiated via a telephone
ringing signal if requested when ordered.
4.0 MAINTENANCE
During the working life of the unit, it should require little or no maintenance. GRP will resist attack by most acids, alkalis
and chemicals and is as resistant to concentrated acids and alkalis as most metal products.
However, if abnormal or unusual environmental conditions occur due to plant damage or accident etc., then visual inspec-
tion is recommended.
If the unit requires cleaning, then only clean exterior with a damp cloth to avoid electro-static charge build up.
Replacement of the xenon tube (see below) can be carried out by competent site personnel. Other repairs should be
undertaken by returning the unit to MEDC or by an authorised repairer of Ex equipment.
If a unit fault should occur, then the unit can be repaired by MEDC. All parts of the unit are replaceable.
If you acquired a significant quantity of units, then it is recommended that spares are also made available. Please discuss
your requirements with the Technical Sales Engineers at MEDC.
Removing / replacing xenon tube
CAUTION: Before removing the cover assembly, ensure that the power to the unit is isolated.
Unscrew and remove the 6 off M5 (4.0mm A/F hexagon key). Keep in a safe, accessible location as they are non-
captive
Twist the cover assembly gently clockwise and anti-clockwise, whilst pulling it away from the base. Remove to gain access
to the interior.
Unscrew and remove the two M3 nuts and washers holding the circuit board to the cover pillars. Keep in a safe acces-
sible location.
Lift the electronics assembly away from the support pillars, thus exposing the xenon tube. Remove the old tube by unscrew-
ing the terminal block fixings. The replacement tube can now be fitted (see xenon tube installation sheet, which is supplied
with the replacement tubes)
Replace the electronics assembly onto the support pillars and secure using the two off M3 nuts and washers. Ensure the
retaining strap is fitted to one of the electronics assembly mounting pillars during re-assembly.
Carefully replace the cover assembly back onto the base, avoiding damage to the mating surfaces. Replace the 6 off M5
screws (4.0mm A/F hexagon key) into the holes in the cover assembly and tighten evenly. Ensure the O-ring is seated
correctly on the cover during re-assembly. Ensure the required maximum gap of 0.2mm is maintained between the cover
and the base once assembled
GENERAL ARRANGEMENT
2 M5 X 10 ±1
DIRECT
MOUNTING
HOLES
2 FIXING HOLES
ø8.5 ± 1
OPTIONAL GUARD
ENTRY
'R'
ENTRY
«�L�»
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© MEDC 2014
Certified to IEC60079-0, IEC60079-1 and IEC60079-31
Ex d unit (IEC certification No. IECEx BAS 10.0101)
Ex d IIB Tx (Tamb.) Gb
Ex tb IIIC Tx (Tamb.) Db IP66/IP67
Gas T-rating (Tx)
Dust T-rating (Tx) Ambient temp range (Tamb.)
T4
T105°C
(-55°C to +70°C)
T5
T90°C
(-55°C to +55°C)
T6
T75°C
(-55°C to +40°C)
The IECEx certificate and product label carry the IECEx equipment protection level marking
Gb
Db
Where Gb signifies suitability for use in a Zone 1 surface industries area in the presence of gas.
Where Db signifies suitability for use in a Zone 21 surface industries area in the presence of dust.
ATEX units
Certified to EN60079-0, EN60079-1 and EN60079-31
Ex d unit (ATEX certification No. BAS99ATEX2195)
Ex d IIB Tx (Tamb.) Gb
Ex tb IIIC Tx (Tamb.) Db IP66/IP67
Gas T-rating (Tx) Dust T-rating (Tx) Ambient temp range (Tamb.)
T4
T105°C
(-55°C to +70°C)
T5
T90°C
(-55°C to +55°C)
T6
T75°C
(-55°C to +40°C)
The ATEX certificate and product label carry the ATEX group and category marking:
II 2 GD
Where:
Signifies compliance with ATEX
II Signifies suitability for use in surface industries
2 Signifies suitability for use in a zone 1 area
G Signifies suitability for use in the presence of gases
D Signifies suitability for use in the presence of dust
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