MEDC FL12 User Manual

Page 4

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

Where Gb signifies suitability for use in a Zone 1 surface industries area in the presence of gas.

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