Replacement Of The Xenon Tube; Certification/Approvals; Iecex Units; Atex Units - Eaton CU1 Manuel Technique

Sounder and Xenon Beacon - CU1
English

Replacement of the Xenon Tube:

Caution: Before removing the cover assembly, ensure
that the power to the unit has been isolated
Unscrew the socket set screw (2mm A/F hexagon key) in
the lens cover three full turns. Unscrew and remove the
lens cover.
Remove the old tube by unscrewing the tube terminal
block screws. The replacement xenon can now be fitted
in to the terminal block provided. If the replacement tube
has a flexible trigger wire, ensure the tube is fitted into
the terminal block in the same orientation as the original
tube.
Note: the legs of the replacement tube may need to be
trimmed to allow the tube to be positioned at the
correct height from the terminal block. See diagram
below:
Once the required adjustments have been made, replace
the cover using the same procedure as above but in the
reverse manner. Care must be taken to avoid damage to
the threads and mating faces of the cover and enclosure.
Ensure the o-ring is correctly seated on the cover and that
the cover is screwed down tightly such that the maximum
gap between the cover and enclosure is 0.2mm. Ensure
the socket set screw in the cover assembly is fully
tightened to secure the cover assembly on the body.
26.5 REF

6.0 Certification/Approvals

IECEx units

Certified to IEC60079-0, IEC60079-1 and IEC60079-7
Ex de unit (IEC certification No. IECEx BAS 11.0149X)
CU1-S - Ex de IIB T4 (-50°C to +50°C) Gb
CU1-H - Ex de IIB T4 (-50°C to +70°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.
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Technical Manual for The coMbined Sounder and Xenon beacon – cu1 TM207 May 2020 www.eaton.com

ATEX units

Certified to EN60079-0, EN60079-1 and EN60079-7
Ex d unit (ATEX certification No. Baseefa04ATEX0273X)
CU1-S - Ex de IIB T4 (-50°C to +50°C) Gb
CU1-H - Ex de IIB T4 (-50°C to +70°C) Gb
The ATEX certificate and product label carry the ATEX
group and category marking:
Where:
II
2
G

These units also have the following approvals:

Ingress protection: IP66 to BS EN 60529 & IP67 to
IEC60529

7.0 Special conditions for safe use:

1. Painting and surface finishes, other than those applied
2. Not more than one single or multiple strand lead shall
3. Leads connected to the terminals shall be insulated for
4. All terminal screws, used and unused, shall be fully
5. Minimum creepage and clearance distances between
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6. Any cable entry devices or stopping plugs shall be
7 . For replacement purposes, the flare fixing screws shall
II 2 G
Signifies compliance with ATEX
Signifies suitability for use in surface industries
Signifies suitability for use in a zone 1 area
Signifies suitability for use in the presence of gases
by the manufacturer are not permitted
be connected into either side of any terminal, unless
multiple conductors have been joined in a suitable
manner, e.g. two conductors into a single insulated
crimped boot lace ferrule
at least 275V and this insulation shall extend to within
1mm of the metal of the terminal throat
tightened down
the terminals and adjacent conductive parts (including
cable entry devices) must be at least 5mm
selected and installed to maintain the minimum (IP54)
integrity of the enclosure
be of stainless steel minimum grade A2-70