J. D. NEUHAUS Profi 025Ti, Руководство по эксплуатации

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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).
A D D I T I O N A L M A R K I N G “X”
This designation refers to explosion protection details
in the operation manual.
II 2 GD IIA T4(X)/II 3 GD IIB T4(X) or
II 3 GD IIA T4(X) :
This designation does not permit use in the presence of
the extremely flammable substances 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 or ignition tempe-
ratures below 202° C. The permissible ambient tempera-
ture range (Ta) extends from - 20° C to + 70° C.
II 2 GD IIC T4(X) or II 2 GD IIB T4(X) :
The permissible ambient temperature range (Ta)
extends from - 20° C to + 70° C.
...II C T6(X) :
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 and which stipulate the maximum
surface temperatures for the device.
U S E I N M I N I N G A P P L I C AT I O N S
Standard versions of JDN hoists, trolleys and crane sys-
tems may generally also be used for underground min-
ing operations as well as for the associated surface facil-
ities, which are hazardous due to firedamp and/or com-
bustible dusts. Within this equipment group I they
belong to category M2.
They constitute devices that can be switched off in
cases where an explosive atmosphere forms. They are
equipped with protective measures offering a high
degree of safety. The protective measures with which
products of this category are equipped provide the nec-
essary degree of safety for normal operation as well as
operation under difficult conditions, in particular rough
treatment and changing environmental influences. For
other difficult conditions in addition to explosion pro-
tection prevailing with regard to the general handling
of the devices in mining applications, special mining
hoists are available from J. D. NEUHAUS.
The maximum permissible surface temperature of 150° C
in accordance with EN 13463-1
5
for coal dust
atmospheres is not reached. For mining applications,
the relevant designation for hoists, trolleys and crane
systems is
I M2 .
L OA D C H A I N
In order to guarantee the required degree of earthing,
rusty chains must no longer be used in zones 1 and 21.
This is due to the fact that, depending upon the degree
of corrosion, the leakage capability of the chain may be
impaired to a level that is no longer adequate.
CO 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 sufficient-
ly low surface resistance of less than 10
9
Ω
, in order to
prevent electrostatic ignition hazards. Otherwise (resis-
tance >10
9
Ω
), for explosion groups I, 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.
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
Friction and impacts can give rise to individual sparks
presenting a danger of ignition in the presence of
explosion group IIC gases, hydrogen sulphide, ethylene
oxide, or light-metal or other impact-sensitive dusts.
Accordingly, spark formation caused by mechanical
influences must be prevented.
The chain and load must always be moved in such a way
that sliding and/or frictional contact with other plants
or components is excluded. If circumstances do not per-
mit this, it is necessary to ensure an absence of explo-
sive atmospheres during operation.
Impact between particular materials results in an
increased ignition hazard. Such material combinations
include corrosion-susceptible steel or cast iron against
aluminium, magnesium or corresponding alloys.
This applies in particular in the presence of rust or rust
film. Rust (also rust film) formation is possible, espe-
cially on the chain and on the load hook, at the fric-
tion points. The following holds true for all zones: 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 (exceptions being stainless steel
powered by air !
P RO D U C T I N F O R M AT I O N
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