Safety relief valve activating pressure [psig]
Maximum working pressure: see air receiver nameplate
SX 3
SX 7.5
Safety relief valve activat‐
ing pressure [psig]
160
160
Tab. 10 Safety relief valve: activating pressure
2.9 Free air delivery
SX 3
SX 7.5
FAD
at 160 psig[cfm]
Altitude: above sea level
7.77
23.66
FAD
at 160 psig [cfm]
Altitude: 3,280 ft
7.70
23.48
FAD
at 160 psig [cfm]
Altitude: 6,560 ft
7.63
23.27
FAD
at 160 psig [cfm]
Altitude: 9,840 ft
7.59
23.10
Tab. 11 Free air delivery
2.10 Sound pressure level
Operational state:
■ Nominal flow rate
■ Nominal pressure
Measurement conditions:
■ Free-field measurement to CAGI/PNEUROP PN8 NTC 2.3
■ Measurement distance: 3.3 ft.
SX 3
SX 7.5
Sound pressure lev‐
el [dB(A)]
62
66
Tab. 12 Sound pressure level
2
Technical Data
2.9
Free air delivery
6
Service manual Screw compressor
Aircenter SX 3/7.5 SIGMA CONTROL BASIC
Number: 9_6945 01USE