Quantem Series 55 Automatic Variable Fan Speed Controller

Quantem Series 55 Automatic Variable Fan Speed Controller

Precisely modulate the speed of ventilation fans in response to changes in
ambient temperature. Optimum air circulation is maintained in ventilated
areas and buildings with minimum noise and efficient use of energy. A
thermistor monitors the air temperature and, as the temperature rises or falls
within a preset band above set point, the fan speed is correspondingly
increased or reduced between maximum and minimum idle speed values.
The Idle adjustment control setting includes a “zero-power FAN STOP”
position at which fan speed is stopped when ambient temperature is below
setpoint. This “zero-power FAN STOP” function will be over
ridden by temperature control functionality meaning that power will be
applied to the fan when the ambient temperature exceeds setpoint.
Modulating band above set point, between the maximum and minimum
speeds, is fixed at 6 degrees. Temperature set point is adjustable from 35 to
95 degrees F.

Especially designed for agricultural buildings, although of broad application
in all ventilated areas, these fan controls are compact units designed to fit
on a standard 4x4 junction box. Construction protects the electronic controls
against dust and solid state design ensures long life and reliable operation.
Fan speed motors must be permanent split capacitance or shaded pole with
built-in thermal fuse. Load must decrease as RPM increases and bearings
should be capable of operating at minimum RPM for phase angle speed
control.

120v or 240v

*Must be hard wired directly to electrical and device to be controlled.