SystemAir AW EC Betriebsanleitung Seite 30

Operating Instructions AW EC
c. Direction of vibration amplitude
Y-Achse
Y-axis
d. Measuring point on fan
• Bei AW EC fans mit external rotor motors
– At the stator fixing screw opposite the cable inlet, see arrow.
e. The fans are classified in the following categories in accordance with the standard and the power
consumption:
≤ 3,7 kW in BV-2
•
• > 3,7 kW in BV-3
f. Limit value r.m.s. for vibration amplitude during start-up within the customer operating speeds:
Max. 5.6 mm/s, in compliance with ISO 14694 Table 5 Start-up / BV-2.
•
Max. 4.5 mm/s, in compliance with ISO 14694 Table 5 Start-up / BV-3.
•
4. For example, vibrations in the system may have the following causes:
Transport and handling of the fans can lead to a change in the balance of the fan.
•
• The air feed and resulting turbulence, e.g. obstructions, deflections, branches, flaps.
Operation at a prohibited fan operating point, e.g. demolition operation in a flat characteristic curve range.
•
Insufficiently rigid fan mounting surfaces, e.g. mounting walls.
•
• Vibration transmitted by adjacent components, e.g. compressors, adjacent fans.
• Flow-related influences from adjacent fans.
5. If resonance vibrations occur that cannot be prevented by the design, it is possible to mask out certain
speed ranges for the operation area of the fan, see Motor setup. Passing through this resonant range as
quickly as possible is allowed. Operation of the fan in the resonant range is not allowed.
L-BAL-F101-GB 2023/26 Index 001
Z-Achse
Z-axis
X-Achse
GM00034A_Systemair
X-axis
02.11.2020
Part.-No. 00712749-GB
12/18
Commissioning