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Atlas Copco
Air Compressor
LT2
Atlas Copco LT2 User Manual
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2.4.2 Settings of overload relay
-
fuses of compresso
rs with Y-D starter
50 Hz
Type Voltage
Overload
relay
Fuses
(V) (A)
(A)
LE/LT5
230
9.1
25
LE/LT5
400
5.4
16
LE/LT5
500
4.3
16
LE/LF/LT7
230
12.2
25
LE/LF/LT7
500
5.5
16
LE/LF/LT10
230
14.5
40
LE/LF/LT10
400
8.5
25
LF10 500
7.0
25
LE15 230
21.5
63
LE15 400
13.1
40
LE15 500
9.8
25
LE20 230
29.4
63
LE20 400
16.9
40
LE20 500
13.7
40
Type Voltage
Overload
relay
Fuses
(V) (A)
(A)
LT15-30 230
22.4
40
LT15-30 400
12.9
25
LT15 230
22.4
40
LT15 400
12.9
25
LT20 230
30.8
63
LT20 400
17.9
40
LT20-30 230
30.8
63
LT20-30 400
17.9
40
2920 1585 00
- 44 -
43
45
Table of Contents
Table of Contents
3
Leading Particulars
5
General Description
5
Compressor Variants
8
Air Flow
9
LE/LF2 up to -5, LE7 and LE10 50 Hz (Fig. 1.10)
9
LE10 60 Hz, LE15, -20, LF7, -10 and LT (Fig. 1.11)
9
Regulating System
12
LE/LF/LT2 up to -7 with DOL Starter (Fig. 1.10)
12
LE/LT5 up to -20, LF5 up to -10, each with Y/D Starter (Fig. 1.11)
12
LE/LF/LT Trolley (Fig. 1.12)
13
Installation and Handling
15
Dimension Drawings
15
Installation Proposals
36
Le/Lf/Lt
38
LE/LF/LT Trolley
39
Electrical Connections
39
Settings of Overload Relay - Fuses - Cable Size
43
Settings of Overload Relay - Fuses of Compressors with DOL Starter
43
Settings of Overload Relay - Fuses of Compressors with Y-D Starter
44
Cable Size
45
Pictographs
46
Operating Instructions
47
Initial Start-Up
47
Starting
47
Stopping
48
Taking out of Operation at End of Compressor Service Life
49
Maintenance
50
Petrol Engine Maintenance
50
Preventive Maintenance Schedule of the Compressor 1)
50
Lubrication of LE/LT Compressors
51
Service Kits
51
Servicing and Adjustment Procedures
53
Unloader or Check Valve
53
Valves
53
Replacement of Valve Discs (Figs. 5.1 and 5.2)
55
Air Filter
56
Adjustment of MDR4S Pressure Switch (Figs. 5.4 up to 5.6)
57
Adjustment of MDR3 Pressure Switch (Figs. 5.7 and 5.8)
59
Adjustment of Pilot Valve on Trolley (Fig. 5.9)
60
Safety Valve (SV-Figs. 1.4, 1.6 and 1.8) 1)
61
Testing on LE/LF/LT
61
Testing on LE/LF/LT Trolley
61
Relief Valve (8-Fig. 1.1) on LF7, -10, LE10 up to -20 and LT
61
Problem Solving
62
Principal Data
64
Reference Conditions
64
Limitations
64
Compressor Data for LE 10 Bar
64
50 Hz
64
60 Hz
65
Compressor Data for LF 10 Bar
66
50 Hz
66
Compressor Data for LT 15 Bar
67
50 Hz
67
60 Hz
67
Compressor Data for LT 20 Bar
68
50 Hz
68
Compressor Data for LT 30 Bar
69
50 Hz
69
Conversion List of si Units into Us/British Units
70
PED (Pressure Equipment Directive)
70
Components Subject to 97/23/EC Pressure Equipment Directive
70
Overall Rating
70
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Atlas Copco LT2 Specifications
General
Brand
Atlas Copco
Model
LT2
Category
Air Compressor
Language
English
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