Atlas Copco Stationary Air Compressors Manuale Utente

Instruction book 

2920 1521 00 

5 

 

 
SF1 up to SF15 are stationary, oil-free compressors driven by an electric motor.   
 

 
SF Skid (Fig. 1.2) 
The components of the compressor are housed in a bodywork with removable front/top panel.  The 
compressor is mounted on a frame designed to allow easy installation at the required spot. 
 
SF Tank-mounted (Fig. 1.3) 
The components of the compressor are housed in a bodywork with removable front/top panel.  The 
compressor is mounted on an air receiver. 
 
SF Twin (Fig. 1.4) 
Two compressor modules are mounted on an air receiver.  Each module is provided with its own control 
panel. 
 
SF Multi Pack  
The compressors have two up to four compressor modules enclosed in a sound-insulated bodywork.  
The front door comprises an Elektronikon regulator including the start and stop buttons.  An 
emergency stop button is also provided.  An electric cabinet comprising the motor starter is installed 
behind the front door. 
 
SF Multi Full-Feature (Figs. 1.5 and 1.6) 
Full-Feature compressors are Pack compressors additionally provided with an air dryer integrated in 
the bodywork. The dryer removes moisture from compressed air by cooling the air to near freezing 
point and automatically draining the condensate.  See section 1.7. 
 

 
Each compressor element consists of a fixed scroll-shaped housing and a scroll-shaped rotor.  Air 
enters the compressor element through inlet opening (1).  Once the air is drawn in, the orbiting scroll 
(4) seals the inlet opening and forces the air into a continuously decreasing space.  As scroll (4) keeps 
orbiting, this process of compression is constantly repeated, resulting in discharging of oil-free 
compressed air through outlet opening (3). 
 

 

1 Air 

inlet 

2 Fixed 

scroll 

3 Compressed 

air 

outlet 

4 Orbiting 

scroll 

 
Fig. 1.1 Compressor element