Product Manual

Table Of Contents
SF FF on air receiver with optional CD dryer
(1) FF units on air receiver with optional CD dryer
(2) To cubicle
(3) Compressed air outlet
Air flow
Air is drawn through air filter (100) and is compressed by the compressor element (101). Next, the
compressed air flows through the check valve (105) and the air cooler (106).
Single phase units are equipped with a solenoid valve (109) and a silencer (110) for easy starting at low
voltage.
On floor mounted versions without refrigerant dryer, the air flows then directly to the outlet valve (121).
On receiver mounted units, the compressed air flows into the air receiver (120), onto which the outlet valve
AV (121) is fitted.
On compressors with refrigerant dryer, the compressed air flows to the refrigerant dryer (ID), where the
water vapor condensates by cooling down. The water is removed via the integrated water separator (201c)
and the electronic drain (210).
For details on the operation of the ID dryer, see section Refrigerant dryer.
On floor mounted versions with no additional dryer, the air flows then directly to the outlet valve (121). On
receiver mounted units, the compressed air flows into the air receiver (120), onto which the outlet valve
AV (121) is fitted.
On Full-Feature compressors equipped with a CD dryer, the air from the refrigerant dryer passes a PD 20
+
filter (114) and flows into the CD desiccant dryer (117). Next, the dry air flows into the receiver (120).
For details on the operation of the CD dryer, see section Desiccant dryer
Cooling
The compressor element (101) is cooled by an integrated radial fan (102). An axial fan (107) fitted on the
motor shaft provides cooling air for the air cooler (106).
On compressors with integrated refrigerant dryer, a separate fan (204) delivers cooling air for the dryer.
Condensate management
Floor mounted compressors without refrigerant dryer have no drain. A water separator is available as
option.
Instruction book
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