2.9 Noise emission [dB(A)]
Mains frequency
ASK 27
ASK 32
ASK 35
50 Hz
65
67
69
60 Hz
67
69
71
Noise pressure level as per ISO 2151 and the basic standard ISO 9614-2, tolerance: ±3 dB(A) at
maximum machine working pressure
Tab. 14 Noise emission [dB(A)]
2.10 Motors and Power
2.10.1 Drive motor
ASK 27
ASK 32
ASK 35
Rated power [kW]
15.0
18.5
22.0
Enclosure protection
IP 55
IP 55
IP 55
Tab. 15 Drive motor
Rated speed [min
-1
] (50 Hz mains frequency):
Maximum working pres‐
sure [bar]
ASK 27
ASK 32
ASK 35
8.0
2945
2950
2940
11.0
2945
2950
2940
15.0
2945
2950
2940
Tab. 16 Drive motor: nominal speed at 50 Hz
Rated speed [min
-1
] (60 Hz mains frequency):
Maximum working pres‐
sure [bar]
ASK 27
ASK 32
ASK 35
8.5
3555
3560
3555
11.0
3555
3560
3555
15.0
3555
3560
3555
Tab. 17 Drive motor: nominal speed at 60 Hz
2.11 Cooling oil recommendation
A sticker showing the type of oil filled is to be found near the oil separator filling port.
Information on ordering cooling oil is found in chapter 11.
2
Technical Specifications
2.9
Noise emission [dB(A)]
8
Service Manual Screw Compressor
ASK T SIGMA CONTROL BASIC
9_5717 20 E
