21 Operation
21.1 Safety notes
WARNING
Hazard from electrical voltage
› The device may only be operated by people
– instructed in the function and risks,
– who have understood them and are in a position to react accordingly.
› Ensure that children do not operate the device or play with it without supervision.
› Ensure that only people who are in a position to operate the device safety have access to it.
21.2 Operating conditions
• Do not operate the Multibox in an explosion-capable atmosphere.
• During operation, touching the rotor may not be possible.
• Safety components may not be circumvented or put out of function.
• Please only operate the multibox within the limits stated on the name plate.
• Prevent suction of foreign bodies, this can destroy the fan.
• Switching frequency::
– The Multibox has been admitted for S1 long-term operation.
– The controls may not permit any extreme switching operations.
• In cases of speed control via frequency inverters, make sure that voltage peaks on the motor terminals must be lower than 100 V
and voltage rise velocities lower than 500V/µs (IEC 34-17).
– If the motor line is long, use an output lter between the frequency inverter and the motor.
• If the operational leakage current of 3.5 mA is exceeded, the conditions with a view to earthing pursuant to DIN VDE 0160/5.88.
ART.6.5.2.1 are to be fullled.
• Noise development can be minimised by use of a noise lter.
21.3 Operation/use
" Only use the Multibox in accordance with the operating instructions and the operating instructions for the motor.
" During operation, monitor the Multibox for correct function.
" Switch the Multibox off as planned:
WARNING
Danger from electrical voltage or parts ying through the air
Errors occurring can lead to personal or property damage
Switch the Multibox off as planned:
› in cases of atypical running noises, vibrations, pressure uctuations
› if the values for current, voltage and temperature are exceeded (name plate).
46
Operation
Multibox MUB - V 1.0
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