9 Operation
9.1 Safety information
HAZARD
Hazard of explosion of an ignition-capable gas/air atmosphere!
When commissioning the EX fan, the fundamental information from BGR 104 (explosion protection rules
of the employers‘ insurance schemes) and BGR 132 (avoidance of risk of ignition as a result of electro-
static charges) must be known.
Do not open or tip the fan if an explosive atmosphere exists.
WARNING
Risk from electrical voltage!
› The device may only be operated by people who have been instructed about function and risks, have
understood them and are in a position to act accordingly.
› Make sure that children do not operate the device without supervision or play with it.
› Make sure that only people who are in a position to operate the device safely have access to it.
9.2 Operating conditions
• During operation, touching the rotor must be impossible.
• Safety components may not be circumvented or put out of function.
• Only operate the EX fan within the limits stated on the name plate.
• Intake of foreign bodies can destroy the fan.
• Switching frequency:
– The EX fan has been admitted for S1 continuous operation.
– Controls may not permit any external switching operations!
• Sound development can be reduced by the use of a noise lter.
Fans in the external area:
In long periods of standstill of the fans, condensation may form in the motor.
" Therefore ensure a regular switch-on time of 2 hours per week.
9.3 Operation/use
" Switching on, see Commissioning
" Only operate the EX fans in compliance with these operating instructions and the instructions for use of the motor.
" Monitor the EX fans for correct function during operation.
" Switch the EX fans off as planned.
WARNING
Risk from electrical voltage or risk of bursting!
Faults occurring can lead to personal and/or property damage.
Switch the EX fan off immediately:
› in untypical running noises, oscillations, uctuations in pressure,
› if the gures for current, voltage and temperature are exceeded (name plate).
63
Ex-fans - 10.2014
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