Axc-Ex Und Axcbf-Ex Series: Minimum Air Gap - Systemair Aw 355 D4-2-Ex Montage- Und Betriebsanleitung

Inhaltsverzeichnis

Verfügbare Sprachen

6.2.2

Assembly

WARNING

Danger from falling parts!

›

Check the underground (ceiling/wall) for strength before assembly,

›

when selecting the ﬁ tting material, pay attention to the weight, vibration tendency and shearing

forces (weight, see name plate).

 Fit the fan on a ﬁ rm base with suitable ﬁ tting material at all the ﬁ tting points.

 Secure the screw connections with Loctite.

 Fit the air channels and the accessories.

6.2.3

AW-EX series: minimum air gap

Size

355

420

550

650

Table 10: Minimum air gap of various construction sizes

When complying with the material combinations, the aforementioned minimum gaps must also be complied with: bet-

ween rotating and stationary parts, the minimum gap may not be smaller than 1 % of the decisive contact diameter,

but no less than 2 mm in an axial or radial direction and may not be more than 20 mm.

NOTE on the condensation opening of the AW-EX series

Pay attention in installation:

In installation in a vertical motor shaft position, condensation cannot escape.

Installation and operation only admissible in a horizontal shaft position

NOTE for an optimised characteristic

To ensure achievement of the characteristic, it is necessary for a constant and twist-free ﬂ ow to exist at

the inlet. In free intake, this is achieved by the addition of an admission nozzle or a channel line with a

length of no less than 2.5 x D. If this is not possible for construction reasons, a deﬂ ection piece with

bafﬂ es ﬁ tted in front of the fan must be optimised in its ﬂ uidics in such a way that a constant speed

distribution at the fan inlet is achieved.

On the pressure side, a channel or duct element with a length of no less than 2.5 x D is also to be

provided for achievement of the characteristic.

6.2.4