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