A D D I T I O N A L M A R K I N G " X "
or
: This designation does not permit
use in the presence of the extremely flammable sub-
stances hydrogen sulphide and ethylene oxide or in the
presence of light metal or other impact-sensitive dusts,
or in the presence of dusts with glow temperatures
below 210°C and ignition temperatures below 202°C.
: This designation permits use in the
presence of carbon disulphide or other temperature
class T6 substances only under special conditions, which
have been agreed with the manufacturer and which are
described in the crane documentation (Europe: in the
inspection log) and which stipulate the maximum surface
temperatures for the device.
G E N E R A L N O T E O N D E S I G N AT I O N
The highest possible respective designations for lifting
equipment and running gear are usually replaced by a
designation, which corresponds to the normal assembly
of a compact complete device (trolley or crane system).
J D N H O I S T S
" W I T H I N C R E A S E D S PA R K P RO T E C T I O N "
JDN Hoists in the "with increased spark protection"
version (SP), fulfil further explosion protection require-
ments. With the exception of carbon disulphide, they
can be used in the presence of all gases in zones 1 and
2 and dusts with glow temperatures above 210°C and
ignition temperatures above 202°C and can be designated
with
for installation in a trolley,
depending upon trolley version (see below), but also
with
. For further operating conditions,
see Instructions for safe operation (Notes
and
).
JDN HOIS T S FOR USE IN THE PRESENCE OF
TEMPER ATURE CL ASS T6 GASES OR EXTREMELY
EXPLOSIVE DUS T S
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
, which includes the
additional marking "X" for special conditions
(see Additional marking "X").
Please contact us with regard to these requirements.
M AT E R I A L S F O R F R I C T I O N A N D I M PAC T H A Z A R D S
The combination of particular material pairs results in
an increased ignition hazard. This does not apply to
corrosion-resistant steel or cast iron against aluminium,
magnesium or corresponding alloys.
It applies in particular to the presence of rust or of rust
film. Rust (also rust film) formation is possible, especi-
ally on the chain and on the load hook, at the friction
points. In zones 1 and 21, but also in zone 2 for gases
of explosion group IIC, hydrogen sulphide and ethylene
oxide, as well as in zone 22 for light metal and other
impact-sensitive dusts, the following generally applies:
For the intended use of hoists it must be ensured, that
no rust is present at the above-mentioned friction
points and that material combinations of the above-
named light metals with steel (exception: stainless
steel) are not used in the working area of the hoists, at
potential friction, impact or sliding points. It is thus
possible to exclude sparking due to mechanical influen-
ces with these material combinations.
C O M P R E S S E D A I R H O S E S
In zone 1, compressed air hoses must have a sufficiently
low surface resistance of less than 10
9
Ω
, in order to
prevent electrostatic ignition hazards. Otherwise
(resistance >10
9
Ω
), for explosion groups IIA and IIB
the hoses must be
∅ ≤
30 mm and for explosion group
iic
∅ ≤
20 mm, or proof must be provided that they
cannot become dangerously charged.
E
D
... IIC T6(X)
II 3 GD IIA T4(X)
P RO D U C T I N F O R M AT I O N
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