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4.0 M INTEN NCE
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.
The 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.
If a unit fault should occur, then the unit can be repaired by MEDC. ll 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
C UTION: Before removing the cover assembly, ensure that the power to the unit is isolated.
Note: These units each contain two separate xenon tubes which should both be replaced at the same time.
Unscrew the setscrew on the cover one full turn (2.0mm /F hexagon key). Carefully unscrew and remove
the cover assembly (using a 120mm hook wrench if required).
Remove the old tubes by unscrewing the terminal block fixings. The replacement xenon tubes 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 and maintain the IP rating of the unit.
5.0 CERTIFIC TION/ PPROV LS
IECEx units
Certified to IEC60079-0, IEC60079-1 and IEC60079-7
Ex d unit (IEC certification No. IECEx B S 10.0086X)
10J:- Ex d IIB T4 (-55°C to +65°C) Gb
15J:- Ex d IIB T4 (-55°C to +50°C) Gb
Ex de unit (IEC certification No. IECEx B S 10.0087X)
10J:- Ex de IIB T4 (-50°C to +65°C) Gb
15J:- Ex de IIB T4 (-50°C to +50°C) Gb
The IECEx certificate and product label carry the IECEx equipment protection level marking
Gb
Where Gb signifies suitability for use in a Zone 1 surface industries area in the presence of gas.
TEX units
Certified to EN60079-0, EN60079-1 and EN60079-7
Ex d unit ( TEX certification No. B S00 TEX2204X)
10J:- Ex d IIB T4 (-55°C to +65°C) Gb
15J:- Ex d IIB T4 (-55°C to +50°C) Gb
© Eaton MEDC Ltd 2018
01/18
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