Atlas Copco GA55 Instruction Book

2920 1381 02
4
Instruction book
1.1.1 Air flow (Fig. 1.6)
Fig. 1.2 General view of GA90C
AV Air outlet valve
CM Control module
Daa Automatic condensate drain outlet
Dma Manual condensate drain valve
1 Electric cable entry
Figs. 1.1 and 1.2 General views of GA75 and GA90C
Air drawn through filter (AF) and open inlet valve (IV) into
compressor element (E) is compressed. Compressed air and
oil flow into air receiver/oil separator (AR) via check valve
(CV). The air is discharged through outlet valve (AV) via
minimum pressure valve (Vp), air cooler (Ca) and condensate
trap (MTa).
Check valve (CV) prevents blow-back of compressed air when
the compressor is stopped. Minimum pressure valve (Vp)
prevents the receiver pressure from dropping below a minimum
pressure.
CM
Dma
Daa
50507F
1
AV

Atlas Copco GA55 Specifications

General

Model	GA55
Category	Air Compressor
Power	55 kW
Capacity FAD	10.2 m³/min
FAD	10.2 m³/min
Free Air Delivery	10.2 m³/min
Motor Power	55 kW
Type	Rotary Screw
Noise Level	69-73 dB(A)
Drive Type	Direct driven