Essential safety instructions | 3
Operating instructions CMVpro 125-400 ATEX | Version 1-en
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3.5
Explosion hazards
DANGER
Danger to life due to ignition of explosive gas mixtures
Death or serious injuries if gas mixtures explode due to the following causes:
▪ Hot surfaces, such as frictional heat in hub seal or hot bearing surface of a
defective motor bearing.
▪ Spark formation upon friction, impact, and grinding due to foreign bodies in
the fan or a defective motor bearing.
▪ Spark formation due to electrostatic charge if the fan is not grounded or is
grounded incorrectly.
▪ Spark formation due to leakage current induced in the motor bearings.
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Monitor ambient temperature or motor temperature and ensure sufficient
cooling air supply.
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Check hub seal and motor bearing according to maintenance schedule.
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Protect fan against infiltration of foreign bodies (degree of protection at least
IP 20 according to DIN EN 60529).
3.6
Thermal hazards
CAUTION
Risk of burn due to contact with hot surfaces
Burns to unprotected body parts.
▪ The fan housing and support can reach temperatures over 60 °C due to a
hot conveyed medium.
▪ The fan’s electric motor can reach temperatures over 60 °C on its surface
during operation.
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Allow a hot fan or electric motor to cool off.
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Wear protective gloves when working on the fan or electric motor.
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When mounting the fan, observe the minimum distance between the fan
cowl of the electric motor and neighboring components or walls
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3.7
Noise hazard
CAUTION
High noise level with start-up and operation of the fan
Response upon being startled as well as hearing damage and hearing loss as
long-term consequences.
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Observe the information in the technical data sheet on noise emissions from
ducts and the casing.
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Wear hearing protection in the vicinity of the fan when required.
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Comply with legally mandated noise control regulations. If the fan is in-
stalled outdoors, comply with environmental noise emission limit values.