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

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P RO D U C T I N F O R M AT I O N
Page 13
DECISION CRITERIA FOR SELECTING THE CORRECT JDN HOIS T S
IN EXPLOSION-HAZARDOUS AREAS
Explosion groups for gases and vapours
(cf. explosion group
Zone Version*
1
Operation*
2
and temperature classes for the most important gases and vapours)
Manufacturer responsibility Operator responsibility
II A 2 A
1 A
II B (X) except hydrogen sulphide, ethylene oxide
2 A
(highly flammable)
1 A SP
II B 2 A SP
1 A SP
II C / T4 2 A SP
1 A SP FSR
II C / T6(X) 2 A SP
1 A SP FSR
Potentially explosive dusts Zone Version*
1
Operation
*2
Usual industrial dusts
22 A
21 A
Light metal or impact-sensitive dusts
22 A
SP
21 A
SP
E D
E D
E
E
T E D
T E D
E D
E D
E D
E D
E
E
E
E
*1:
Version features (under the responsibility of the manufacturer):
A: The chain is made of zinc-plated steel; metal controls are conductively connected to the hoist. This is part of the
standard equipment. For technological reasons, a zinc-plated version of chain size 31.5 x 90 is not available. This
is only used for the extremely slow-running chain drives of large hoists, so that the sliding velocity for potential
friction points between the chain and the surroundings remains well below 1 m/s.
SP: Hoists “with increased spark protection”:
Copper-plated load hook and bottom flange with brass safety catch.
FSR: Running gear “with increased spark protection”:
Running wheels for trolleys and cranes are made of bronze.
*2:
Instructions for safe operation (operator’s responsibility):
: Ignition hazards are not to be expected if hoists or cranes are used in the normal manner. Friction and impacts in
the working area of the chain, not resulting from intended use of the hoist or crane and which result in sparking,
must be excluded, or an absence of gas in the operating area must be ensured. This means, for example, that the
chain, the bottom block and the load hook must be prevented from swinging against surrounding objects or that
a gas-free environment must be ensured.
: Friction, impact and sliding points involving combinations of light metal and steel or cast iron must not be pre-
sent in the hoist’s operating area.
: Ambient temperature and the type of operation must be examined separately.
T
E
D