These Direct Mount pressure actuated condenser fan speed controllers are designed for speed variation of single-phase motors.
Head pressure control of a refrigeration system, through speed variation of the fan on an air-cooled condenser, results in optimum performance throughout the year.
A pressure actuated device, gives the most direct and fastest response to pressure variations in the refrigerant system. The controller varies the supply voltage to the motor from 30% to at least 95% over the proportional band using the phase cutting principle.
This provides speed variation of permanent split capacitor or shaded pole motors that do not draw more than 4 A (rms) full load current.
Cut-off models (fan stops at low pressure) as well as minimum speed models (fan keeps running at 30%) are available.
The controllers can be used in non-corrosive refrigerant systems.
- Condenser pressure control by fan speed variation
- Pressure input
- Direct mount
- Setpoint screw on top
- Built-in suppression filter
- Compact design
- Attractive styling
- Quick connector plug included