MEDC SL5 Manuel Technique page 5

Remove/Replace The Potted Lamp Units:-
Unscrew the 4 off M5 screws (4.0mm A/F hexagon key) holding the cover assembly to the base. Keep the screws
in a safe, accessible location if non-captive. Remove cover assembly to gain access to the interior.
Filament Units:
For extra safety, twin lamps are fitted in each unit. If one lamp fails, the other will remain illuminated but the
lamp unit should be replaced at the first opportunity. To do this, once the cover has been removed, disconnect the
wires from the terminals then simply unscrew the 2 x M3 screws (2.5mm A/F hexagon key) holding the mounting
rail to the cover. Then finally unclip the lamp unit from its mounting rail.
Replace a new lamp unit in a similar, but reverse manner to that used for removal.
LED & Xenon Units:
In the event of the Xenon tubes/LED clusters failing the whole cover must be replaced. Remove the cover as
instructed above. Release the connection wiring from the relevant terminals, before disconnecting the cover from
the retaining strap which is retained via a M3 screw (2.5mm A/F hexagon key) situated on the underside of the
cover.
Replace the new cover assembly in a similar, but reverse manner to that used for removal. Check the O'ring
situated in the groove on the underside of the cover and is secure before final assembly.
Once termination is complete, carefully push the cover assembly back onto the base, avoiding damage to the
mating surfaces. Replace the 4 off M5 fixing screws (4.0mm A/F hexagon key, maximum torque 4Nm) into the
holes in the cover assembly and tighten evenly.
6.0 CERTIFICATION/APPROVALS
IECEx units
Ex e mb unit (IEC certification No. IECEx BAS 11.0105X)
Filament Units
Certified to IEC 60079-0 and IEC 60079-7
Ex e IIC T3 Gb (-40°C to +55°C)
LED & Xenon Units
Certified to IEC 60079-0 , IEC 60079-7, and IEC 60079-18
Ex e mb IIC T4 Gb (-40°C to +45°C ) - LED
Ex e mb IIC T4 Gb (-40°C to +55°C ) - Xenon
The IECEx certificate and product label carry the IECEx equipment protection level marking
Gb
Where Gb signifies suitability for use in a Zone 1 & Zone 2 surface industries area in the presence of gas.
ATEX units
Ex e mb unit (ATEX certification No. Baseefa02ATEX2108X)
Filament Units
Certified to EN60079-0 and EN60079-7
Ex e IIC T3 Gb (-40°C to +55°C)
© Cooper MEDC 2013 07/13