Operation
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9.1 Safety information
♦ Commissioning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 1.
♦ Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2
9.2 Preconditions
♦ Installation and electrical connection have been
correctly performed.
♦ Residual material from installation and foreign objects
have been removed from the fan and ducts.
♦ Inlet and outlet are free.
♦ Safety devices have been fitted.
♦ Ground cable is connected.
♦ Cable glands are tight.
♦ Nominal current (from the name plate) is not
exceeded.
♦ Data on the name plate corresponds with the
connection data.
9.3 Tests
♦ Before switching the fan on, check for externally visible damage and ensure that the protective equipment functions
properly.
1. Before switching the fan on, check for externally visible damage and ensure that the protective equipment functions
properly.
2. Switch the fan on.
3. Checks:
♦ Direction of rotation/conveyance. The direction of rotation always applies looking at the impeller.
• The direction of rotation is best observed just before the fan stops.
• The direction of conveyance is best to observed when a piece of clothing is held in front of the fan on a pole or
similar.
♦ Smooth running (any vibrations and noise)
♦ Current consumption
♦ Compare the current consumption with the nominal consumption on the name plate.
♦ Tightness of all connections
4. Switch the fan off.
9.4 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.
9.5 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 1.
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