Operation Manual
  6 References 
6 - 5 
6-5  Compressed Air and Refrigerant Circuit / Operation Principles 
y  IDF1E 
y  IDF2E,IDF3E 
y  IDF4E,IDF6E,IDF8E,IDF11E,IDF15E 
Compressed Air Circuit 
Humid hot air entering air dryer is cooled in 
the cooler. At this time, the condensed 
moisture is separated from the air by the 
drain separator and automatically 
discharged.The dried clean air is heated by 
the reheater untill it gets about the same 
temperature as that of ambient air. It is then 
discharged from air dryer outlet. 
Refrigerant Circuit 
The Fluorocarbon charged in the 
refrigerant circuit is compressed by the 
compressor and cooled by the condenser 
to become liquid. Then, going through the 
capillary tube, it is decreased the pressure 
to reach a low temperature. Passing 
through the cooler part, it draws heat from 
compressed air and intensely boils. Finally 
it is inhaled into the compressor again. The 
capacity control valve opens to prevent 
dew drops from freezing when 
compressed air is cooled enough. 
Compressed Air Inlet
Coole
r
Capillary Tube
Pressure Switch
Fan Moto
r
Evaporation Thernarete
r
Condenso
r
Compressor
Capacity Control
Valve
Dorain Outlet
Dorain Separator
Compressed Air Outlet
Compressed Air Inlet
Coole
r
Capillary Tube
Pressure Switch
Fan Motor
Evaporation Thernareter
Condenso
r
Compressor
Capacity Control
Valve
Dorain Outlet
Dorain Separator
Compressed Air Outle
t
Reheter
Compressed Air Inlet
Capillar
y
 Tub
e
Pressure Switch
Fan Moto
r
p
Thermorete
r
Condenso
r
Compressor
Capacity Control
Valve
Dorain Outlet
Dorain Separato
r
C
ompressed Air Outlet
Heat Exchanger










