Maintenance / Servicing; Lamp Change - CEAG AB 05 Ex-nR Série Mode D'emploi

5.5 Lamps
Only lamps that are approved for this type of
lamp may be used (see Fig.3 table 1, type label of the
light fitting and label on the lamp holder).
5.5.1 Inserting the lamp
The lamp must be screwed tightly into the lamp
holder. Ensure it is screwed in fully so that no
sparks or other unauthorised operating states may
occur. Protect the glass on the lamp from breaking
when screwing in.
5.6 Closing the light fitting
Remove all foreign matirals from the light fitting.
- Pay attention to the correct fit of the enclosure top
part and the seals.
- All seals must be clean an undamaged.
- The light fitting may not be damaged.
- Tighten all 6 enclosure cobi.screws evenly
diagonally (test torque 10 Nm).
Overtightening might impair the protection
category!
6. Putting into operating
Prior to putting the apparatus into operation, the
tests specified in the relevant national regulations
shall be carried out.
Check the light fitting for its proper functioning and
installation in compliance with these operating
instructions and other applicable regulations!
Attention: Only fully certified equipment may be put
into operation.
Improper installation and operation of the lamp leads
to loss of the guarantee.
Fig. A Vacuum test
in type Ex nR
Pa
300
150
0
0
= acceptable range
Z
Test connection M6
6 Cooper Crouse-Hinds
- The light fitting may only be operated when
closed.
- It is generally recommended (see
IEC/EN 60079-14) that you ensure the restricted
breathing of the construction is not impaired during
installation and that you test the restricted breathing
properties before commissioning (see section 9).
7.

Maintenance / Servicing

Warning:
Disconnect the power supply to the equipment before
maintenance / repair.
Before the light fitting is opened it must be
allowed to cool down for 10 minutes after switching
off.
All seals have to be re-attach after maintenance.
Observe the valid regulations for the repair,
maintenance and testing of explosion-protected
equipment, e.g. IEC 60079-17 and IEC 61241-17!
7.1 General Maintenance /
Inspection
The interval between maintenance depends upon the
ambient conditions and the hours of operation. The
recommendations given within IEC 60079-17 and
IEC 61241-17 for recurring checks must be
observed.
Within the scope of the maintenance / inspection,
especially those parts on which the type of
protection depends must be checked for damage,
e.g.:
- Silicone tubes over the connecting cables.
- cable entries must be free from corrosion!
- Observe the intervals for changing as specified by
the lamp manufacturer!
Lamp types must be as specified!
If the light fittings is opened for maintenance
purposes or to replace the lamp, ensure that the
"nR" properties are not affected.
This could be done by testing the restricted
breathing properties as per section 9, for example.
7 . 2 7 . 2 7 . 2 7 . 2 7 . 2

Lamp change

Lamp change Lamp change Lamp change Lamp change
The suggested interval between lamp changes given
by the lamp manufacturer should be followed.
Disconnect the power or ensure that no hazardous
atmosphere is present..
See section 5.4 for notes on opening and closing the
lamp. If the light fitting was previously in operation
then wait 10 mins. before opening.
See section 5.5 for notes on inserting the lamp.
After replacing the lamp, ensure that the "nR"
properties have not been affected.
This could be done by testing the restricted
breathing properties as per section 9, for example.
Z
s
80
8 Repair/Overhaul/
Modifications
8.1 General
The relevant national regulations which apply to the
maintenance/servicing of electrical apparatus in
explosive atmospheres, shall be observed.
(e.c. IEC 60079-17 and IEC 61241-17)
Repairs and overhaul may only be carried out with
genuine COOPER CROUSE-HINDS spare parts.
Before replacing or disassembling individual parts,
observe the following:
Disconnect the power supply to the equipment
before maintenance / repair.
Make sure that there is no explosive atmosphere
when opening the equipment.
See section 5.4 for notes on opening and closing the
lamp.
Only use original spare parts.
If the light fitting was previously in operation then
wait 10 mins. before opening.
Repairs that affect the explosion protection, may
only be carried out by COOPER CROUSE-HINDS or a
qualified electrician in compliance with the applicable
national rules.
Modifications to the device or changes to its design
are not permitted.
After carrying out repair or overhaul work, ensure
that the "nR" properties have not been affected.
This could be done by testing the restricted
breathing properties as per section 9, for example.
9 Testing the restricted
breathing properties
All screw plugs and cable glands must be correctly
tightened.
Overtightening the screw elements can destroy the
thread.
Connect the testing equipment to the test
connection (Screw plug M6) on the
light fitting (see Fig. A).
Use the values specified in IEC 60079-15 for the test
(see Fig. A).
Close the test connection again.
10 Disposal/Recycling
When the apparatus is disposed of, the respective
national regulations on waste disposal will have to
be observed.
Subject to modifications or supplement of the
product range.