Atlas Copco GA18

2920 1462 00
34
Instruction book
7.2.2 Circuit breaker of fan motor
For star-delta starter (IEC)
Supply voltage Frequency GA11-22 radial fan GA11-22 axial fan GA30C radial fan
Elektronikon II Elektronikon I Elektronikon I and II
(V) (Hz) (A) (A) (A)
200 50 2.5 3.8 4.2
230 50 2.2 3.3 3.7
400 50 1.3 1.9 2.1
500 50 1.0 1.5 1.7
220-230 60 2.3 3.2 3.5
440-460 60 1.3 1.9 2.0
380 60 1.3 1.9 2.4
For direct-on-line starter (CSA/UL)
Supply voltage Frequency GA11-22 radial fan GA11-22 axial fan GA30C radial fan
Elektronikon II Elektronikon I Elektronikon I and II
(V) (Hz) (A) (A) (A)
200 60 2.6 3.7 
220-230 60 2.3 3.2 
440-460 60 1.3 1.9 2.0
575 60 1.1 1.5 1.5
7.3 Fan control switch (Full-feature)
Cut-out pressure . . . . . . . . . . . . . . . . . . . 7.9 bar(e)
Switch-on pressure . . . . . . . . . . . . . . . . . 9 bar(e)
7.4 Compressor specifications
7.4.1 Reference conditions
Nominal working pressure as stated below
Air inlet pressure (absolute) . . . . . . . . . . . . . . . . . . . . . . . . . . . bar 1
Air inlet temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C 20
Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . % 0
7.4.2 Limitations
Maximum working pressure as stated below
Minimum working pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . bar(e) 4
Maximum air inlet temperature . . . . . . . . . . . . . . . . . . . . . . . . C 40
Minimum air inlet temperature. . . . . . . . . . . . . . . . . . . . . . . . . C 0