|
AMCA:
Arr. 1 - SWSI
ISO 13349:
Arr. 1 or 12
|
SWSI Arrangement #1:
This arrangement is very popular for most applications due to the flexibility and the versatility of discharge positions during the manufacturing process. The wheel is overhung on the shaft and bearing assembly which isolates the bearings from the airstream. Normally this arrangement is used for V-belt driven fans which provides flexibility in fan performance. The motor mounts independently from fan with several position options. See Motor Positions Diagram.
Alternative fan configurations can include bearings mounted on independent pedestals, with or without an inlet box.
|
 |
 |
|
AMCA:
Arr. 2 - SWSI
ISO 13349:
Arr. 2
|
SWSI Arrangement #2:
The wheel is overhung on the shaft and bearings are mounted in bracket, directly supported by the fan housing. This arrangement is uncommon and typically is only used for custom application requirements.
Alternative fan configurations can include an inlet box.
|
 |
 |
|
AMCA:
Arr. 3 - SWSI
ISO 13349:
Arr. 3 or 11
|
SWSI Arrangement #3:
The wheel is supported between the bearings which results in a compact design suitable for clean, dry-air service. Arr. 3 fans are usually sold for belt driven fan applications utilizing sheaves, bushings, and belts to connect the fan and motor shafts.
Alternative fan configurations can include bearings mounted on independant pedestals, with or without an inlet box.
|
 |
 |
|
AMCA:
Arr. 3 - DWDI
ISO 13349:
Arr. 6 or 18
|
DWDI Arrangement #3:
The wheel is supported between the bearings which results in a compact design suitable for clean, dry-air service. Arr. 3 fans are usually sold for belt driven fan applications utilizing sheaves, bushings, and belts to connect the fan and motor shafts.
Alternative fan configurations can include bearings mounted on independant pedestals, with or without inlet boxs.
|
 |
 |
|
AMCA:
Arr. 4 - SWSI
ISO 13349:
Arr. 4
|
SWSI Arrangement #4:
The wheel is mounted directly on the motor shaft to achieve a compact design. In addition, the elimination of the shaft and bearings minimizes maintenance.
Alternative fan configurations can include an inlet box.
|
 |
 |
|
AMCA:
Arr. 5 - SWSI
ISO 13349:
Arr. 5
|
SWSI Arrangement #5:
This arrangement is similar to Arrangement 4 but with the motor mounted directly to the fan housing. The wheel is mounted directly on the motor shaft to achieve a compact design. In addition, the elimination of the shaft and bearings minimizes maintenance.
Alternative fan configurations can include an inlet box.
|
 |
 |
|
AMCA:
Arr. 7 - SWSI
ISO 13349:
Arr. 7
|
SWSI Arrangement #7:
Similar to Arrangement 3, the wheel is supported between the bearings resulting in a compact design that is suitable for clean, dry-air service. Arr. 7 fans are usually sold for direct driven fan applications utilizing a coupling to connect the fan and motor shafts. In addition, Arr.7 fans can be supplied with a pedestal for motor mounting if mounting structures are not already available onsite.
Alternative fan configurations can include bearings mounted on independant pedestals, with or without an inlet box.
|
 |
 |
|
AMCA:
Arr. 7 - DWDI
ISO 13349:
Arr. 17
|
DWDI Arrangement #7:
Similar to Arrangement 3, the wheel is supported between the bearings resulting in a compact design that is suitable for clean, dry-air service. Arr. 7 fans are usually sold for direct driven fan applications utilizing a coupling to connect the fan and motor shafts. In addition, Arr.7 fans can be supplied with a pedestal for motor mounting if mounting structures are not already available onsite.
Alternative fan configurations can include bearings mounted on independant pedestals, with or without inlet boxs.
|
 |
 |
|
AMCA:
Arr. 8 - SWSI
ISO 13349:
Arr. 8
|
SWSI Arrangement #8:
Similar to Arrangement 1, the wheel is overhung on the shaft and bearing assembly which isolates the bearings from the airstream. However, Arr. 8 fans include an integral pedestal furnished for the motor and coupling. This is the most flexible of the direct drive arrangements allowing for larger motors, fan sizes, and accessories.
Alternative fan configurations can include an inlet box.
|
 |
 |
|
AMCA:
Arr. 9 - SWSI
ISO 13349:
Arr. 9
|
SWSI Arrangement #9:
Similar to Arrangement 1, the wheel is overhung on the shaft and bearing assembly which isolates the bearings from the airstream. However, with the motor mounted on side of fan pedestal and an adjustable motor mount, this arrangement provides a compact grouping of the motor, sheaves, bushings, belts, and fan. In addition, the v-belt drive permits a wide variety of fan speeds to accomodate various installations and applications.
Alternative fan configurations can include an inlet box.
|
 |
 |
|
AMCA:
Arr. 10 - SWSI
ISO 13349:
Arr. 10
|
SWSI Arrangement #10:
This arrangement is nearly identical to the Arrangement 9 but the motor is mounted within the fan pedestal taking the compact, packaged design a step further. The wheel is overhung on the shaft and bearing assembly but Arr.10 fans require minimal field installation labor while providing flexibility in speed and performance.
Alternative fan configurations can include an inlet box.
|
 |
 |
| |
Notes:
nyb utilizes AMCA's Drive Arrangement classifications when referencing a fan's arrangement (Arr.1 - SWSI, Arr. 3 - SWSI, Arr.3 - DWDI, etc.)
All fan orientations may be horizontal or vertical.
Adapted from AMCA Publication 99-16: Standards Handbook
|
|
|
