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
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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