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FAN & BLOWER CENTRIFUGAL FANS
E
© FANTECH
2016
E-9
CENTRIFUGAL FANS; SWSI & DWDI
INSTALLATION
The amount of space required around the fans must be considered to avoid uneven air
flow and pulsations to ensure the fan will be able to work to its full potential. Generally
this necessitates leaving a space equivalent to one impeller diameter between the fan
inlet and a wall or baffle. In a situation where two or more fans are mounted in parallel,
then a space equivalent to two fan diameters must be left between fan inlets that face
each other. If that amount of space cannot be provided a baffle must be erected
between the fans, and the possibility that the fans may not operate to their full potential
must be considered.
HANDINGS
The full range of handings for both single and double-width units are available
(see page E-12).
SPECIAL APPLICATIONS
The fans can be designed to handle air at elevated temperatures continuously.
The treatment to the fans in these situations will differ according to whether it is a
single or double-width fan but both can be adapted to suit the application;
double-width fans are generally limited to 120°C when fitted with a class
H motor and built to arrangement no. 3.
ANCILLARY EQUIPMENT
The fans can be provided with the following:-
O
access panel
O
inlet screens
O
drilled discharge angle flanges (spigot connection is standard)
O
matching angles
O
vibration isolators
O
drain connection
O
casings can also be split to fit through specific openings
O
variable inlet vane control
O
heat slinger and guard
O
spark-resistant construction
O
stainless steel or aluminium (standard construction is mild steel)
O
non-standard finishes (prime coat of grey, zinc phosphate is standard)
O
inverter speed controllers
O
attenuators
OTHER PRODUCTS
General information on the Mill Exhaust, High Pressure Blowers and Vacuum Producers
is given on page
E-16
: refer to sales engineers for more specific selection and
dimensional information.
Scan the QR Code
to view more
information online.
DWDI
SWSI