Labconco Spectrum 177050100 User Manual page 27

5: Performance Features
Spectrum Blowers are dedicated, adjustable laboratory exhaust blowers that maximize
energy efficiency for exposure control device installations. These blowers are adjustable
and optimized to succeed in most laboratory ventilation environments associated with
fume hood and enclosure exhaust.
Built-in Vibration Isolation
In addition to using vibration dampers on the curb prior to blower installation, isolators
are used to mount the motor within the blower housing.
ECM Motor & VFD Motor
An electronically commutated motor, or ECM, is up to 82% efficient and provide precise
airflow control. A variable frequency drive, or VFD, motor is controlled by changing the
applied frequency signal. The VFD motor is well known for energy-saving performance
and ease of speed control. These technologies offer superior operating life compared to
PSC motors.
Traditional AC belt-drive blowers typically have two speeds: on and off. There are no
belts or sheaves to change or set the desired operating speed/airflow.
Multiple Input Control Options
Building Management Systems, or BMS, can control and monitor HVAC and similar
ventilation systems. The Spectrum Blower can be controlled by a BMS signal. Both 4-
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