Atlas Copco XAS97 Dd - Technical Specifications; Torque Values for Assembly; Settings of Shutdown Switches and Safety Valves; Compressor and Engine Specifications

33
Instruction Manual
8. TECHNICAL SPECIFICATIONS
8.1 T
ORQUE VALUES
8.1.1 F
OR GENERAL APPLICATIONS
The following tables list the recommended torques applied for
general applications at assembly of the compressor.
For hexagon screws and nuts with strength grade 8.8
Thread size M6 M8 M10 M12 M14 M16
Nm 9 234680125205
For hexagon screws and nuts with strength grade 12.9
Thread size M6 M8 M10 M12 M14 M16
Nm 15 39 78 135 210 345
8.1.2 F
OR IMPORTANT ASSEMBLIES
Assemblies Unit Torque values
Wheel nuts Nm 80 +10/-0
Bolts, axle/beams Nm 80 +/- 10
Bolts, towbar/axle Nm 80 +/- 10
Bolts, towbar/bottom Nm 80 +/- 10
Bolts, towing eye/towbar Nm 80 +/- 10
Bolts, lifting eye/flywheel housing Nm 205 + 20
Bolts, engine/drive housing (M12) Nm 80 +/- 10
Bolts, engine/drive housing (M14) Nm 125 +/- 10
Bolts, compressor element/drive housing Nm 80 +/- 5
Safety switches Nm 35 +/- 5
Joints adjustable towbar (M24) Nm 275 +/- 25
(M32) Nm 375 +/- 25
Note:
Secure the tank cap and drain plug of the fuel tank handtight.
8.2 S
ETTINGS OF SHUTDOWN SWITCHES AND
SAFETY VALVES
Designation Unit Value
Engine oil pressure bar(e) N.A.
Engine oil temperature °C N.A.
Compressor temperature °C N.A.
Safety valve opening pressure
CE type bar(e) N.A.
ASME type psi N.A.
8.3 C
OMPRESSOR
/
ENGINE SPECIFICATIONS
Altitude unit performance curve
Max. allowable working preassure as a function altitude and ambient
temperature.
Compressor type
Designation Unit
Reference conditions
1. Absolute inlet pressure bar 1
2. Relative air humidity % 0
3. Air inlet temperature °C 20
4. Nominal effective working pressure bar 7
The inlet conditions are specified at the air inlet grating outside the canopy
Limitations
1. Minimum effective receiver pressure bar 4
2. Maximum effective receiver pressure,
compressor unloaded bar 8.5-9
3. Maximum ambient temperature at sea level
6)
°C 45
4. Minimum starting temperature °C -10
5. Minimum starting temperature, with coldstart
equipment
5)
°C -20
6. Altitude capability (see separate curve below) m
Performance data
1)
1. Engine shaft speed, normal and maximum r/min 2,750
2. Engine shaft speed, compressor unloaded r/min 1,850
3. Free air delivery
2)
l/s 88
4. Fuel consumption:
- at full load kg/h 7.2
- at unload kg/h 3.6
5. Specific fuel consumption g/m
3
23.3
6. Typical oil content of compressed air mg/m
3
<5
free air
7. Engine oil consumption (maximum) g/h 37
8. Compressed air temperature at outlet valves °C 90
9. Noise level
- Sound pressure level (Lp), measured
according to ISO 2151 under free field
conditions at 7 m distance dB(A) 72
- Sound power level (LW) complies with
2000/14/EC dB(A) 100
TEMPERATURE DEGREES CELSIUS
ALTITUDE m
ATMOSPHERE PRESSURE mbar