Additional safety instructions | 2
Operating instructions CMVpro 125-400 ATEX | Version 1-en
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Operating conditions
• The permissible operating conditions of the fan are defined by the parame-
ters and limit values on the technical data sheet or on the nameplate of the
fan and electric motor.
Note especially:
• Equipment category as well as ATEX certification of electric motor and ac-
cessories (FC, isolation switch, etc.) must be zone-compliant.
• The drive motor of the fan is designed for continuous operation (S1) or FC
operation (S9).
• Maximum speed, which is dependent on
• the temperature of the conveyed medium,
• chemicals present and their concentration in the air stream.
• Prevention of excessive self-heating:
• The operating point (see characteristic map on the technical data sheet)
shall be above the minimum permissible conveyed volume.
• So that no or minimal conveyed medium escapes from the impeller hub,
• operate the fan at a negative pressure,
• or use a hub seal.
• The fan must be equipped with vibration absorbers
_
• Observe the permissible vibration limits according to standard values.
• The fan may not be mechanically stressed at the inlet and outlet connec-
tions.
• Decouple the ductwork from the fan via the sleeves
_
41].
• When using a frequency converter,
• observe limit values for the acceleration time and braking time
_
47],
• the electrical connection to the motor is to be EMC compliant, with ca-
ble shield and grounding
_
• Series or parallel operation of fans is permitted only after clarification and
approval by the manufacturer or importer named in the operating instruc-
tions.
Intended use also includes compliance with all safety regulations and guidelines
in these operating instructions.
Maintenance and repair regulations
Adjustments and modifications to fans are strictly prohibited. Failure to comply
will void ATEX conformity of the fan.
Only trained, qualified, and authorized personnel may perform work on explo-
sion-proof fans.