The refrigerant enters evaporator (2), where it withdraws heat from the compressed air by further evaporationat constant pressure. The refrigerant leaves the evaporator and is sucked in again by the compressor.Automatic regulationThe condenser pressure must be kept as constant as possible to obtain stable operation. The fan control switchtherefore stops and starts the condenser cooling fan (11).If, under partial or no load, the evaporator pressure drops to 7.3 bar(e) (105.8 psig), the bypass regulator (5)opens and hot, high-pressure gas is fed to the evaporator circuit to prevent the evaporator pressure fromdropping any further.2.4 Condensate drain systemDescriptionElectronic water drainThe dryers are equipped with an electronic water drain (EWD). The condensate from the condensate trapaccumulates in a collector. When the condensate reaches a certain level, it is discharged through the drainoutlet.The condensate can also be drained by pressing the test button (1).Instruction book2920 7103 90 15
