General Arrangement - MEDC XB9 Manuel Technique

3.0 OPERATION
The operating voltage of the unit is stated on the unit label. The beacon is powered directly only
LENS GUARD
STAINLESS STEEL
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
inspection 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.
During maintenance, if the cover/lens assembly grease needs to be re-applied, a PFPE (Perfluoropolyether) based
grease such as Krytox GPL203 by DuPont or Perfluorolube 22/6 by Performance Fluids Ltd should be used, to prevent
damage to the O-ring.
Removing / replacing xenon tube
CAUTION: Before removing the cover assembly, ensure that the power to the unit is isolated.
Unscrew the setscrew in the cover assembly one full turn (2.0mm A/F hexagon key)
Using an 80-90mm hook spanner, unscrew and remove the cover assembly.
Remove the old tube by unscrewing the terminal block fixings. The replacement xenon tube can now be fitted (see
the xenon tube installation sheet, which is supplied with the replacement tube).
To replace the cover, use the same procedure as above but in reverse manner, ensuring the cover is screwed down
tightly and ensuring there is no damage to the thread surfaces or mating faces of the cover and enclosure. There
should be a maximum gap of 0.2mm between the faces of the cover and enclosure to ensure correct o-ring
compression. Once assembled, ensure the set screw in the cover assembly is fully tightened to secure the cover.
04/15

GENERAL ARRANGEMENT

CERT LABEL
TAG LABEL
(OPTIONAL)
EXTERNAL EARTH
STUD ASSEMBLY
Ø7 MOUNTING HOLE
3 POSITIONS
CABLE ENTRY
© MEDC 2015