Model 55 Variable Speed Fan Controllers for Air Circulation
Safeguard the health of your livestock with automatically-controlled building ventilation

□ Modulates fan speed in response to temperature changes
□ Convenient wall mounted or junction mounted control unit
□ Energy saving solid state design

 

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 speed values. Typically the modulating band above set point, between the maximum and minimum speeds, is fixed at 6 degrees F but other bandwidths to 20 degrees F are available. 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.

 

SPECIFICATIONS

Series 55

Voltage: 

96/264VAC

Output: 

8.5A full load, 20.5A locked rotor

Temperature range: 

35/95 deg F

Setpoint: 

Local set pot, 5 deg F divisions

Control: 

Phase control proportional, 6 deg F bandwidth

Stability: 

2% FS

Accuracy: 

5% FS

Sensor:

NTC 20K at 77F included (#223-40058-08)

Operating ambient:  

up to 120 deg F

Idle adjustment: 

20/85% line voltage, front panel

Maximum speed: 

98% line voltage

Noise: 

RF suppression standard

Overall size, unit: 

4.3 x 5.9 x 4.9 in

Overall size, sensor: 

9/16in diameter x 7/8in long probe, 12in leads

Mounting: 

to 4x4 junction box

Options:  

Lamp RPM) indicator

 

PARTS AVAILABLE

Model #

Power

Control

Set point

Range

55-54-L420

96/264VAC

6 deg F bandwidth Front idlel adjust

Local

 

Quantem Corporation
1457 Lower Ferry Road , Trenton , NJ 08618 Telephone 609-883-9191, Fax 609-883-9879. www.quantemcorp.com

Bulletin #Series55/8/2002
Printed in USA