Safety Information For Explosion-Protected Machines In Operation - Siemens SIMOTICS SD Operating Instructions Manual

Risk of injury when touching the fan
There is a risk of injury at machines equipped with a fan cover for the textile industry, as the
fan is not completely touch protected.
• Do not touch the rotating fan.
• Do not put your fingers into the larger air discharge openings.
• Manual intervention must be prevented on the customer's side by using suitable
8.1.2

Safety information for explosion-protected machines in operation

Explosion hazard
This can result in death, serious injury or material damage.
Use in atmospheres where there is a risk of explosion caused by both gas and dust
simultaneously is absolutely prohibited.
Only install machines with type of protection flameproof enclosure "d", increased safety "e",
and machines for Zone 2 in hazardous areas, according to the regulations laid down by the
responsible supervisory authority. They are responsible for determining the hazard level of
each area (division into zones). Layers of dust on machines for Zone 21 and Zone 22 must –
under no circumstances – be higher than 5 mm.
● If there are no other specifications in the EC-type examination certificate or on the rating
● Measures for maintaining the temperature class:
Low-voltage motors
Operating Instructions, 05/2014, 5 610 00000 02 000
CAUTION
measures, e.g. appropriate housings or a protective grating.
WARNING
These explosion-protected machines are not suitable for hybrid explosive environments.
plate regarding operating mode and tolerance, electrical machines are designed for
continuous duty and normal startup procedures that are performed infrequently and do
not result in excessive temperature rise. Only use these machines for the operating mode
specified on the rating plate.
For S1 line supply operation, a function-tested, current-dependent protective device that
monitors all three phase conductors provides sufficient protection for the machine. This
protective device is set to the rated current and must switch off machines with 1.2x the
rated current within 2 hours or less. Do not switchoff for 1.05-fold or smaller rated current.
Pole-changing machines require a separate switch for each number of poles. If an anti-
condensation heating system is available, it may only be switched on when the machines
are not in operation.
For S2 to S9 line supply operation, machines with type of protection Flameproof
Enclosure "d" must be equipped with at least three temperature sensors (one per phase),
a temperature sensor in the gland plate and with a suitable electronic switchoff device
with a temperature sensor.
Operation
8.1 Safety instructions
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