2 Technical Data
These operating instructions cover the Airtech 3BA side channel vacuum pumps
and compressors supplied with standard TEFC motors. Other configurations are
available including V-belt driven units, units with explosion proof motors,
mechanical seals, magnetic drives, coatings and modifications for high pressure
service. Airtech can provide any combination of modifications to meet your
application requirements. Such blowers, however, are outside the scope of this
manual.
Description
All regenerative blowers are dynamic compression devices and utilize a non-
contacting impeller to accelerate the gas and a specially designed housing to
compress the gas. Cooling is accomplished by using the motor fan to blow air
over the housing. In larger models, the housing is specially designed with
cooling fins to allow a wider range of operation. Both the inlet and outlet ports
have built-in silencers and mesh screens. Both the inlet and outlet have an
inside connection thread corresponding to DIN ISO 228. On larger units, multiple
suction and discharge connection configurations may be available.
The wetted parts are constructed of Aluminum on all models. The blower shares
a bearing with the motor. The seal between the bearing and the motor is not gas
tight in most models, therefore these blowers are not recommended for handling
of toxic or explosive gases. (Contact Airtech Vacuum, Inc. for additional options
if explosive or toxic gases will be handled.)
A full range of accessory items are available, including vacuum or pressure relief
valves, check valves, suction filters, motor starters, vacuum/pressure cross-over
valves, and in-line filters.
Application/Installation Environment
CAUTION! These blowers are designed for use in general industry.
Suitable personnel protection according to OSHA requirements is
provided, but the equipment should not be operated in residential settings.
Airtech blowers can be operated as either vacuum pumps or compressors. They
are suitable for use with air having a relative humidity up to 90 percent, but not
generally suitable for handling corrosive or erosive gases. Special versions for
toxic or aggressive gases may be available. Use of the standard blower in
aggressive environments may cause damage to the blower or exposure to gases
being handled in the local environment.
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