Operating manual - SAB 120-151 A-frame (including ATEX)
008668 en 2019.08
17/61
Compressor unit identification
3.5 Labelling of explosion-proof equipment
ATEX:
The compressor area of application is indicated next to the Ex-sign on the name plate.
II 2 G T3/T4
II
Material group:
II indicates that the equipment is suitable for use in industrial areas above ground.
2
Material category:
2 indicates that the equipment is suitable for use in areas with possible occurrence of ex-
plosive gasses.
G
Hazardous environment:
G indicates that the equipment is suitable for use in potentially explosive gas, vapour
and fog atmospheres.
T3/T4
Temperature class:
indicates the surface temperatures that may occur on the compressor.
Warning!
On ATEX-executions, the limits in Table 2 must always be respected.
Temp. class Max. surface
temp.
Max. temperature of oil to
shaft seal
Min. ignition temperature
of oil
T1 450°C 380°C 500°C
T2 300°C 230°C 350°C
T3 200°C 130°C 250°C
T4
135°C 65°C 185°C
T5
100°C 30°C 150°C
T6 85°C 15°C 135°C
Table 2: Temperature classes - screw compressors
3.6 Geometrical swept volume
Compr.
model
Rotor
dia.
mm
Rotor
L/D
Max.
Speed
rpm
Geometrical
swept volume
drive shaft end
Ft
3
/Rev. M
3
/Rev.
CFM
3550 rpm
M
3
/H
2950 rpm
XJF 120 M 120 1.4 5,772 0.05065 0.001433 180 254
XJF 120 L 120 1.4 4,661 0.06272 0.001775 223 314
XJF 120 S 120 1.4 3,600 0.08234 0.002330 292 412
XJF 151 A 151 1.6 6,297 0.09623 0.002723 342 482
XJF 151 M 151 1.6 5,332 0.11366 0.003217 403 569
XJF 151 L 151 1.6 4,306 0.14075 0.003983 500 705
XJF 151 N 151 1.6 3,600 0.16833 0.004764 598 843
Table 3: Geometrical swept volume
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