3. Maintenance
1.
It is essential that all RL units are maintained in accordance with the
requirements of the EN60079-17 standard: (Electrical apparatus for explosive gas
atmospheres – other than mines).
2.
IMPORTANT
. No modifications are permitted to the unit, all spare parts must be
purchased from the manufacturer, unauthorized modifications or spare parts will
invalidate certification and make the equipment dangerous.
3.
Isolate the RL unit from the mains supply and allow to cool before carrying out any
maintenance work.
•
For Emergency variants, battery must be isolated/ connected when a hazardous
environment is NOT present prior to carrying out any maintenance work.
4.
In the unlikely event of a number of LED’s failing, the light engine assembly must be
replaced. This is achieved by removing the outer polycarbonate cover and then
releasing the M3 bolts that hold the LED assembly in place, disconnect the white and
red/white cable to the power supply and pull the light engine PCB clear. Re fitting a
light engine is a reversal of the above procedure.
•
For emergency variants, battery must be isolated/ connected when a hazardous
environment is NOT present prior to carrying out any maintenance work.
5.
The unit has either 1 or 2 independent power supplies located in the terminal chamber
covers, in the event that a power supply needs to be replaced the terminal chamber cover
should be removed, the cables disconnected and the dog clip can then be detached
from the cover. Fitting a new power supply is a reversal of the above procedure.
6.
Disposal of packaging, RL unit and old LED assemblies/power supplies should be carried
out in accordance with national regulations.
Protection Concepts
CML14ATEX3119 or IEC Ex CML15.0001 or CML21UKEX3105
CML15ATEX4138 or IEC Ex CML15.0068 or CML21UKEX4104
CML16ATEX1130 or IEC Ex CML16.0052 or CML21UKEX1100
Standard variants
II 2 GD Ex eb mb IIC T4 Gb Ex
tb IIIC T80°C Db
-40°C to +60°C
Standard variants
II 3 GD Ex ec mc IIC T4 Gc Ex
tc IIIC T80°C Dc
-40°C to +60°C
Standard variants
II 2 D Ex tb IIIC T80°C Db
-40°C to +60°C
Emergency variants
II 2 GD Ex eb mb IIC T4 Gb Ex
tb IIIC T76°C Db
-20°C to +50°C
Emergency variants
II 3 GD Ex ec mc IIC T4 Gc Ex
tc IIIC T75°C Dc
-20°C to +50°C
Emergency variants
II 2 D Ex tb IIIC T76°C Db
-20°C to +50°C
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