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

Страница: 11 / 218

or cast iron) 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
influences with these material combinations.
E A R T H I N G
Electrostatic ignition hazards can be prevented by
means of safe earthing. In zones 1 and 21, earthing of
the hoists is required. This must be achieved via the
load hook or the load eyes if the lifting equipment is
connected to correspondingly earthed parts (earth leak-
age resistance less than 10
6
Ω
). This also applies to
operation with trolleys or cranes. Their tracks must be
earthed on site. Running wheels and rail surfaces must
never be painted, as this can result in unacceptably
high earth leakage resistance values.
Earthing of the load hook is via the chain
(see also
Load chain , page 10).
Loads must be earthed during transportation.
A separate earth is required, for example, when using
non-conducting sling gear.
AC E T Y L E N E A N D CO P P E R
When operating JDN products in explosion-hazardous
areas, in which an acetylene-containing atmosphere can
occur, it must be ensured that copper-plated parts are
kept dry in order to exclude the possibility of oxidation
of the metallic copper and the formation of an aqueous
phase, which is capable of reacting with acetylene and
which can result in an explosion hazard.
powered by air !
P RO D U C T I N F O R M AT I O N
Page 11