WHY DRY AIR?
The air given off by any compressor always contains water vapour, the amount of which depends on the temperature and the relative degree of humi dity. When the air is compressed, the volume decreases proportionately, but the exhaust water vapour still remains in the air. When temperature deceases and reaches a value at which the air becomes saturated, the water vapour in the air begins to condense. This is called DEW POINT. With an appropriate aftercooling unit which reduces the temperature of the air produced by the compressor, approximately 60-70% of the water gets condensed.
FEATURES
- Non-cyclic operation
- Constant Pressure Dew Point 30C
- Hot gas by-pass valve for freeze protection
- High efficiency centrifugal moisture separator with timer controlled electronic auto drain to remove condensate
- Easy to install, operate and maintain
- Low noise
- Low power consumption
- Low maintenance costs
FUNCTIONING PRINCIPLE
The UE / UR series dryers are basically made of two different circuits – a compressed air circuit, divided into two heat exchangers and a refrigerating circuit. The hot and humid inlet compressed air passes through the air – air heat exchanger and then reaches the evaporator (air-freon heat exchanger), where it is cooled by the refrigerating circuit until it reaches the preset dew point, thus condensing the moisture it contains. In the separator the condensed moisture is then separated and removed. The advantages of such a system are essentially two, first of all the inlet air is pre-cooled, so the refrigerating system can be sized in order to guarantee a more limited thermal jump, with an energy saving of about 40-50%, and secondly no cold air is conveyed through the compressed air line, thus preventing the overall formation of condensate on the external surface of the piping.
DAMAGES CAUSED BY THE CONDENSATE
Condensate corrodes piping, solenoid valve and pneumatic tooling, forcing the user to withstand expensive repair interventions, especially the expensive “down-time”- heavy Costs which Cannot be easily controlled. When compressed air is used as “process air” for painting equipment, in chemical industries, food processing industries, glass factories and in plants for conveying and handling hygroscopic raw materials, the installation ultrafilter dryer is essential to eliminate the condensate which pollutes the production cycle.
ELECTRONIC CONTROLS
For an optimal operation of its dryers ultrafilter provide reliable and state-of-the-art microprocessor based controllers to monitor and control the operation of the dryers.
Following are the different functions of the dryer controllers:
- Display of dew point temperature
- Operation Of hot gas bypass valve
- Operation of condensate drain valve

URD2 Controller also controls the operation of condenser fan motor






























