6. Instructions for use
The following maximum, uninterrupted deployment times for the hoists must be observed:
Chain blocks are manual lifting devices which are not appropriate for permanent operation in lowering
operations. To avoid impermissibly high temperatures of the friction plates, the max. uninterrupted
usage times for applications in Ex areas must not be exceeded : assuming a maximum ambient
temperature of up to + 40° celsius )
When lowering
a
max. deployment of approx. 3 m of uninterrupted lowering path
may not be exceeded, as the brakes heat up immensely during lowering.
After
this 3 m working path (lowering) a pause of
approx. 20 minutes is required for
cooling down
the hoist brake.
Even
in the case of only slight wear of the surface-treated parts such as e.g. chains, hooks,
etc., these must be replaced with PLANETA original spare parts.
Defective parts cannot be guaranteed to maintain Ex protection.
Ignitable
dust deposits should be avoided on the hoists. Every day before starting work
free the hoist of dust deposits and make sure that no dust can accumulate between the
moving parts.
Repair work
should only be carried out outside the potentially explosive area.
Protect
the hoist from impacts, friction, rough handling and moisture.
During operation
of the hoist it is important to ensure that the operator wears conductive
clothing (shoes, gloves).
Gloves should have a conductive resistance of <10 to the power of 8 ohms.
Pulling off clothes may cause explosive discharges and is therefore not allowed.
Electrostatically
induced hazards of ignition can be prevented by grounding.
In Zone 1, grounding of the hoist is required! This must be done on the load hook, or the
load eye, when the hoist is connected to the appropriately grounded parts. For trolleys, the
surfaces of the wheels and rail may never be painted, because these can lead to
impermissibly high grounding resistance values.
Loads must be grounded during transport; separate grounding is necessary, for example
when using non-conducting load-securing devices.
In order to ensure the proper level of grounding, rusty chains may no longer be used in
zones 1 and 2. Depending upon the degree of corrosion, the grounding performance loss
in the chain can be impaired to an unacceptable extent.
DANGER! This hoist must not be used with IIB gases hydrogen sulfide or ethylene oxide!
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Страница 34: ...Your responsible supplier PLANETA Hebetechnik GmbH ...