2920 1257 04
2
Instruction book
This instruction book describes how to handle the machines to ensure safe operation, optimum efficiency and long service life.
Read this book before putting the machine into operation to ensure correct handling, operation and proper maintenance
from the beginning. The maintenance schedule comprises measures for keeping the machine in good condition.
Keep the book available for the operator and make sure that the machine is operated and that maintenance is carried out
according to the instructions. Record all operating data, maintenance performed, etc. in an operator's logbook available from
Atlas Copco. Follow all relevant safety precautions, including those mentioned on the cover of this book.
Repairs must be carried out by trained personnel from Atlas Copco who can be contacted for any further information.
In all correspondence mention the type and the serial number, shown on the data plate.
For all data not mentioned in the text, see sections "Preventive maintenance schedule" and "Principal data".
The company reserves the right to make changes without prior notice.
4.2 Preventive maintenance schedule for the
compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.3 Lubrication of LE/LT compressors . . . . . . . . . . . 35
4.4 Service kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5
Servicing and adjustment procedures . . . . . . . . . . 36
5.1 Unloader or check valve . . . . . . . . . . . . . . . . . . . 36
5.2 Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.3 Air filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.4 Adjustment MDR4 pressure switch . . . . . . . . . . 37
5.5 Adjustment MDR5/6 pressure switch . . . . . . . . . 39
5.6 Adjustment pilot valve on Trolley . . . . . . . . . . . 39
5.7 Safety valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.8 Relief valve on LF55/75, LE75 up to -150
and LT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6
Problem solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7
Principal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.1 Reference conditions . . . . . . . . . . . . . . . . . . . . . 42
7.2 Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.3 Compressor data for LE 10 bar . . . . . . . . . . . . . 42
7.3.1 50 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.3.2 60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.4 Compressor data for LF 10 bar . . . . . . . . . . . . . . 43
7.4.1 50 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.4.2 60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.5 Compressor data for LT 15 bar . . . . . . . . . . . . . . 44
7.5.1 50 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.5.2 60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.6 Compressor data for LT 20 bar . . . . . . . . . . . . . . 45
7.6.1 50 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.6.2 60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.7 Compressor data for LT 30 bar . . . . . . . . . . . . . . 46
7.7.1 50 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.7.2 60 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8
Conversion list of SI units into US/British units . . 48
Contents
Page
1
Leading particulars . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 General description . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.1 Compressor variants . . . . . . . . . . . . . . . . . 3
1.2 Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2.1 LE/LF15 up to -40, LE55 and
LE75 50 Hz . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2.2 LE75 60 Hz, LE110/150, LF55/75 and
LT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Regulating system . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.1 LE/LF/LT15 up to -55 with DOL starter . . 3
1.3.2 LE/LT40 up to -150, LF40 up to -75,
each with Y/D starter . . . . . . . . . . . . . . . . . 6
1.3.3 LE/LF/LT Trolley . . . . . . . . . . . . . . . . . . . 8
2
Installation and handling . . . . . . . . . . . . . . . . . . . . . 10
2.1 Dimension drawings . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Installation proposals . . . . . . . . . . . . . . . . . . . . . 25
2.2.1 LE/LF/LT . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.2.2 LE/LF/LT Trolley . . . . . . . . . . . . . . . . . . 27
2.3 Electrical connections . . . . . . . . . . . . . . . . . . . . . 27
2.4 Settings of overload relay - fuses - cable size . . 30
2.4.1 Settings of overload relay - fuses of
compressors with DOL starter . . . . . . . . . 30
2.4.2 Settings of overload relay - fuses of
compressors with Y-D starter . . . . . . . . . 31
2.4.3 Cable size . . . . . . . . . . . . . . . . . . . . . . . . 32
2.5 Pictographs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3
Operating instructions . . . . . . . . . . . . . . . . . . . . . . . 32
3.1 Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.3 Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.4 Taking out of operation at end of compressor
service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.1 Petrol engine maintenance . . . . . . . . . . . . . . . . . 34
Summary of Contents for LE110
Page 11: ...2920 1257 04 11 Instruction book Fig 2 2 Dimension drawing LE LT55 75 and LF40 55 Power Pack ...
Page 19: ...2920 1257 04 19 Instruction book Fig 2 10 Dimension drawing LE LT15 up to 40 Unsilenced Pack ...
Page 21: ...2920 1257 04 21 Instruction book Fig 2 12 Dimension drawing LE LT15 up to 150 with CD dryer ...
