Operation
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4. Switch the fan off.
9.5 Commissioning of speed-controlled fans
Check the fan for vibrations at all normal operation speeds during commissioning. Determine and evaluate vibrations
on the housing and bearing areas in accordance with DIN ISO 14694 depending on motor power and positioning.
Measurable vibration velocities depend e.g. on following factors:
• positioning
• bottom section/foundation state
• flow conditions
The working point of the fan, as well as used external devices and accessories, also influence the running
characteristics.
9.6 Adjusting the blade angle
If the working point of the fan has to be changed and it is necessary to adjust the blade angle, please contact
Systemair!
10 Operation
10.1 Safety information
Warning: Hazard from electrical voltage or moving components.
♦ Operation may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 2.
♦ The device may only be operated by people who are instructed in and have understood the function and risks, and
can act accordingly.
♦ Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
10.2 Preconditions
♦ Ensure access only to persons who can safely handle the device.
♦ Only use the fan in accordance with the operating instructions and the operating instructions for the motor.
♦ Safety elements may not be dismantled, circumvented or deactivated.
10.3 Speed-controlled fan operation
Please observe 8.5 Frequency converter (if used), page 23.
11 Troubleshooting/maintenance/repair
11.1 Safety information
♦ Troubleshooting/maintenance/repair may only be carried out by adequately qualified persons, details see Table 1
Qualifications, page 2.
♦ Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2
♦ Observe the 5 rules of electrical safety, see 2.3 5 rules of electrical safety, page 2.
♦ Observe and respect local conditions, regulations and laws.
♦ Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦ The rotor has to be at a standstill.
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