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Idiomas disponibles
BASES
(FUENTE Y AISLAMIENTO)
Critical to every fan installation is a strong, level foundation. A reinforced
poured concrete pad with a structural steel base or inertia base provides an
excellent foundation. Structural bases must be sturdy enough, with welded
construction, to prevent flexing and vibration.
To eliminate vibration and noise from being transferred to the building,
vibration isolators should be used. The fan is mounted directly on the isolation
base and must be supported the entire length of the fan base angle (Refer to
the installation manual for structural bases if the base was supplied by
Greenheck). The isolators are installed between the isolation base and the
foundation.
After the fan, isolation base, and isolators are installed, the entire assembly
must be leveled. Position the level on the isolation base, not the fan shaft, for proper
leveling. Additionally, the motor and fan shafts must be level and parallel relative to each
other for proper alignment.
ALMAZON GIRATORIO
It may be necessary to rotate the scroll of the fan to achieve a different discharge position than what was originally supplied.
Centrifugal fans models BISW, AFSW, BIDW, and AFDW (sizes 7 - 30, arr. 1, 9, and 10, class I and II) and Industrial Process fans
(sizes 5 - 19, standard and heavy duty) have the flexibility to be rotated in the field. This is accomplished by removing the
housing bolts, rotating the housing to a new discharge position, and reinstalling the bolts.
ALINEACION DE LA TURBINA, ESPACIO RADIAL Y EL TRASLAPE
Efficient fan performance can be maintained by having the correct radial gap, overlap and wheel alignment. These items
should be checked after the fan has been in operation for 24 hours and before start-up when the unit has been disassembled.
Radial gap and overlap information applies to models: BISW, AFSW, BIDW, AFDW, PLN, and PLG.
Distancia entre el
Cono de Entrada y el
Espaldar
(pulgadas)
Dimensión
Tamaño
de la
A
+
Unidad
Tolerancia
+ 1
7 - 10
3
/
/
5
8
8
+ 1
12
4
/
8
+ 1
13
4
/
/
7
16
8
+ 1
15
5
/
8
+ 1
16
5
7
/
/
16
8
+ 1
18
6
/
/
3
8
8
+ 3
20
7
/
16
+ 3
22
7
/
/
13
16
16
+ 1
24
8
5
/
/
8
4
+ 1
27
9
7
/
/
16
4
+ 3
30
10
/
/
9
16
8
+ 3
33
11
/
/
7
16
8
+ 3
36
12
/
/
3
4
8
+ 3
40
14
3
/
/
16
8
+ 3
44
15
9
/
/
16
8
+ 1
49
17
/
/
1
8
2
+ 1
54
18
/
/
13
16
2
+ 1
60
20
/
/
15
16
2
+ 1
66
22
7
/
/
8
2
+ 1
73
25
/
/
1
2
2
Overlap
A
Radial
Gap
BISW, AFSW, PLN, PLG
ESPACIO RADIAL
Radial gap is adjusted by loosening the inlet cone/ring bolts and centering the cone/ring
on the wheel. If additional adjustment is required to maintain a constant radial gap,
loosening the bearing bolts and centering wheel is acceptable as a secondary option.
TRASLAPE
Overlap is adjusted by loosening the wheel hub from the shaft and moving the wheel to
the desired position along the shaft. The Inlet Cone to Backplate Distance chart lists the
distance between the wheel and the inlet cone spacing for non-double width fans. Overlap
on double width fans is set by having equal spacing on each side of the wheel.
Overlap
Radial
Gap
6
Base de Aislamiento Típica en un
Ventilador
Overlap
BIDW, AFDW
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