J. D. NEUHAUS PROFI 25TI, Оригинальное руководство по эксплуатации и сборке

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Page 10
PRODUCT INFORMATION
EXPLOSION PROTECTION
The basis for the following information is an expert statement by
the DMT Gas & Fire Division on the use of JDN Hoists, Trolleys
and Crane Systems in potentially explosive areas and is based on
European Directive 94/9/EC
1
(“ATEX 100a”). DMT is accredited
with the testing of devices and protection systems for intended
use in explosion-hazardous areas.
BASIC EXPLOSION PROTECTION FOR THE STANDARD
VERSIONS
Standard version JDN Air Hoists are category 2 devices
(Guideline 94/9/EC, DIN EN 1127-1
2
), for use in zone 1 and 2 for
gases of explosion group IIA. (See also IEC 60079-12
3
and IEC
60079-20
4
.) These devices are also suitable for use in zone 2, in
the presence of gases of explosion group IIB, provided that the
substances hydrogen sulphide and ethylene oxide can be
excluded and additionally in zones 21 and 22 for dusts with glow
temperatures above 210°C or ignition temperatures above 202°C,
provided that no light metal or other impact-sensitive dusts are
present
.
These devices are designated by:
II 2 GD IIA T4(X)/II 3 GD IIB T4(X)
Additional designation “X”, see page 11.
JDN HOISTS “WITH INCREASED SPARK PROTECTION”
JDN hoists of the version “with increased spark protection” (FS)
satisfy additional explosion protection requirements. They can be
employed with all gases - except for carbon disulfide -
(temperature class T6) in zones 1 and 2 and dusts with glow
temperatures in excess of 210°C and ignition temperature in
excess of 202°C in zones 21 and 22, and bear the following
highest possible designations:
II 2 GD IIC T4(X) for
installation in a trolley, depending on the trolley version (see
below) but also with II 2 GD IIB T4(X). For further operating
conditions, see Instructions for safe operation (Notes D and E).
JDN HOISTS FOR USE IN THE PRESENCE OF
TEMPERATURE CLASS T6 GASES OR EXTREMELY
EXPLOSIVE DUSTS
Following separate tests, especially with regard to ambient
temperatures and type of operation, use in the presence of carbon
disulphide or dusts with particularly low glow or ignition
temperatures may be possible with designation
II 2 GD IIC T6(X), which includes the supplementary identifier
“X” for special conditions (see additional marking “X”). Please
contact us with regard to these requirements.
STANDARD JDN TROLLEY AND CRANE RUNNING GEAR
JDN trolleys and cranes can be used in zone 2 with standard
running wheels (made of steel or cast metal) with all dusts and the
presence of gases up to explosion group IIC. Due to the low
running speeds, the possible friction velocities on the running
wheels are less than 1 m/s, so that standard running wheels can
also be used in zone 1 up to explosion group IIB. The highest
possible designation for these devices is:
II 2 GD IIB T4(X)/II 3 GD IIC T4(X).
Depending on the hoist version, it may also have the designations
II 2 GD IIA T4(X)/II 3 GD IIB T4(X) or
II 2 GD IIB T4(X).
JDN TROLLEY AND CRANE RUNNING GEAR
“WITH INCREASED SPARK PROTECTION”
For use in zone 1 in the presence of gases in explosion group IIC,
bronzed running wheels or running wheels made of bronze are
also used. The highest possible designation for this version (FSR)
is
II 2 GD IIC T4(X) (the same as for JDN hoists “with increased
spark protection”).
JDN TROLLEY AND CRANE RUNNING GEAR FOR USE IN
THE PRESENCE OF TEMPERATURE CLASS T6 GASES OR
DUSTS
As is the case with JDN hoists “with increased spark protection”,
temperature class T6 is also possible here in the case of a special
investigation of applicability, permitting the highest possible
designation for standard wheels II 2 GD IIB T6(X)/II 3 GD IIC
T6(X) and for bronzed or bronze wheels
II 2 GD IIC T6(X), i.e. the supplementary identifier “X” for
special conditions in each case.