36 / 66
Figure 23: Example of a secondary safety
component attached below the hoist, bypassing
the hoist lifting mechanism (front view)
Figure 24: Example of a secondary
safety component attached below
the hoist, bypassing the hoist lifting
mechanism (perspective view)
Never use a chain clutch to connect the hoists lifting chain to a safety device. A lateral load to the lifting chain
can easily lead to failure.
3.4.3 Safety Conditions
Enviromental conditions
To ensure the hoists function correctly, the following environmental conditions shall be observed:
Temperature
Temperature ranging between -10°C and +40°C
Humidity
The relative humidity must not be higher than 50% with maximum temperature of
+40°C. A higher relative humidity is allowed al lower temperatures (ex. RH. 90% AT
20°C).
Altitude
Maximum altitude at 3000m
Electromagnetic
environment
The hoist is designed to work correctly in an industrial type electromagnetic
environment, falling within the emission and immunity limits provided by the
harmonized rules currently in force
Wind
Wind can have a significant influence on the load suspended. The exposed influence
shall be considered at all time
Lighting
of
work place
During the set-up, dismantling and maintenance, it is favourable that the diffusion intensity does not have a
value lower than 300 lux. In case of use in environments with poor lighting (typical of the entertainment
sector), the localised lighting of the control devices and the intervention area must be arranged.