MEDC FL12 Notice Technique page 5

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 three M4 screws and washers holding the mounting plate assembly to the cover. Keep
in a safe accessible location as they are non-captive
Lift the mounting plate assembly away from the cover, thus exposing the tubes. Carefully remove the old tubes
ensuring they are disposed of correctly. The replacement tubes can now be fitted by carefully pushing them into
the tube holders. Care must be taken to ensure that the replacement tubes are the same wattage and fitting as
the original ones.
Replace the mounting plate assembly onto the mating face of the cover and secure using the three off M4
screws and washers. Ensure the retaining strap is fitted to one of the mounting plate assembly fixing points
during re-assembly.
Carefully replace the cover assembly back onto the base, avoiding damage to the mating surfaces. Replace
the 6 off M8 screws (6.0mm 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
5.0 CERTIFICATION/APPROVALS
IECEx units
Certified to IEC60079-0 and IEC60079-1
Ex d unit (IEC certification No. IECEx BAS 10.0094)
13W units (ac & dc) and 26W units (ac only):
Ex d IIB T4 (-55°C to +85°C) Gb
T5 (-55°C to +55°C) Gb
T6 (-55°C to +40°C) Gb
39W units (ac only):
Ex d IIB T4 (-55°C to +70°C) Gb
T5 (-55°C to +40°C) Gb
Note: For functional purposes, the certification labels may be marked with a minimum ambient temperature
of -20°C
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.
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© Eaton MEDC Ltd 2017 05/17