2.5 Requirements placed on the personnel / due diligence
Persons entrusted with the planning, installation, commissioning and maintenance and
servicing in connection with the frequency inverter must have the corresponding qual-
ifications and skills for these jobs.
In addition, they must be knowledgeable about the safety regulations, EU/EC directives,
rules for the prevention of accidents and the corresponding national as well as regional
and in-house regulations. Personnel to be trained or instructed and apprentices are only
permitted to work on the device under the supervision of an experienced person. This
also applies to personnel undergoing general training. Comply with the legal minimum
age.
2.6 Work on the device
Information
Mounting, electrical connection, and start-up operation may only be carried out by an
electrical specialist in accordance with electrotechnical regulations (e.g. EN 50110 or
EN 60204)!
Danger due to electric current
•It is generally forbidden to carry out work on electrical live parts. Protection class of the
device when open is IP00! It is possible to touch hazardous voltages directly.
•The rotor is not protected against indirect contact neither by supplementary or
reinforced insulation nor by connection to safety-earth in accordance with EN 60204-
1, therefore the motor/fan must be installed so that it is not touchable.
•When the motor runs independently due to air flowing through or if it continues to run
down after being turned off, dangerous voltages of over 50 V can arise on the motor
internal connections through operation of the generator.
•The safe isolation from the supply must be checked using a two-pole voltage
detector.
•Even after disconnecting the mains voltage, life-threatening charges can appear
between the protective ground “PE” and the voltage supply.
•The protective earth is conducting high discharge currents (dependent on the
switching frequency, current-source voltage and motor capacity). Earthing in
compliance with EN specifications shall therefore be observed even for testing and
trial conditions (EN 50 178, Art. 5.2.11). Without earthing, dangerous voltages can be
present on the motor housing.
•Maintenance work may only be carried out by suitably qualified personnel.
Waiting period at least 3 minutes!
•Through use of capacitors, danger of death exists even after switching off the device
through directly touching the energized parts or due to parts that have become
energized due to faults.
•The controller housing may only be removed or opened when the power line has been
switched off and a period of three minutes has elapsed since switching it off.
Assembly instructions ECblue Basic Safety instructions
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