Atlas Copco LE5 Instruction Book
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Atlas Copco LE5 Instruction Book

Atlas Copco LE5 Instruction Book

Piston compressors
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Replaces
No. 2920 5997 02
1994-12
Instruction book for Piston Compressors
LE/LT5, -6, -7, -8, -9, -11, -12
LT530, -730, -930, -1230
LE7N, LE9N
LE/LT7, -8, -9, -11, -12 Pack
This instruction book meets the requirements for instructions
specified by the machinery directive 89/392/EEC and is valid
for CE as well as non-CE labelled machines
Industrial Air Division
B-2610 Wilrijk - Belgium
No. 2920 5997 03

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Summary of Contents for Atlas Copco LE5

  • Page 1 Instruction book for Piston Compressors LE/LT5, -6, -7, -8, -9, -11, -12 LT530, -730, -930, -1230 LE7N, LE9N LE/LT7, -8, -9, -11, -12 Pack This instruction book meets the requirements for instructions specified by the machinery directive 89/392/EEC and is valid for CE as well as non-CE labelled machines Replaces No.

  • Page 2: Table Of Contents

    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.

  • Page 3: Leading Particulars

    LEN stands for LE7N and LE9N delivery valve to intercooler (23). LE/LT5, -6 stands for LE5, LE6, LT5, LT6 and LT530. LE/LT7 up to -12 stands for LE7, LE8, LE9, LE11, LE12, LT7, The cooled air then flows via pulsation damper (26) and the inlet LT8, LT9, LT11, LT12, LT730, LT930 and LT1230.
  • Page 4 Industrial Air Division Motor PSR19. Air pressure switch Hourmeter Selector switch, operation mode F1753 S1-I. Start button S1-O. Stop button Loading solenoid valve Fig. 1a. LT9, compressor block, fan guard removed Oil filler cap Air filter Air intake silencer Cylinder Connecting block Temperature reducer outlet Oil level sight-glass...
  • Page 5 Industrial Air Division S1-1 S1-0 PSR19 F1751 1 2 3 18 P1 19 Fig. 1c. LE6, complete unit PSR19 F1752 Fig. 1d. LE7, complete unit F1750 Fig. 1e. LT8 Pack 2920 5997 03...
  • Page 6 Industrial Air Division Motor overload relay Motor PSR19. Air pressure switch S1-I. Start button S1-O. Stop button Loading solenoid valve Air intake silencer Air filter Oil filler pipe (not on LEN) Crankcase breather Cooling fan Temperature reducer Finned discharge collector LP cylinder(s) Oil level sight-glass or crankcase...

  • Page 7: Installation

    A condensate drain facility must be installed downstream of the compressor in the lowest part of the air net. If any further information is required, consult Atlas Copco. 2.1 Electrical connections The electrical installation must be carried out by an electrician and correspond to the local codes.

  • Page 8: Operating Instructions

    Industrial Air Division 3 Operating instructions 3.2 Starting Safety precautions The operator must apply all relevant safety precautions, including 1. On LE/LT , check the oil level, which must be in the lower half of those mentioned in this book. the sight-glass (7-Figs.

  • Page 9: Maintenance

    1) Whichever interval comes first . The local Sales Company may overrule the maintenance schedule, especially the service intervals, depending upon the environmental and working conditions of the compressor. Remark For partial or complete overhaul, service kits, exchange compressors, etc. are available. Consult Atlas Copco. Notes 1. Maintain the level in the lower half of the sight-glass.

  • Page 10: Lubrication (Not For Len)

    P.A.O. oil, but the excellent P.A.O. lubrication properties are reduced. at extreme operating conditions (high ambient temperature, It is strongly recommended to use the Atlas Copco approved P.A.O. high loading factor, high pressure), a special diester synthetic (polyalphaolefine) compressor oil to keep the compressor in lubricant should be used.
  • Page 11 1) For correct part numbers of kits, consult ASL F1760 (parts list) Fig. 5b.LE11, LE/LT12, LE9N and high-pressure side of LT5 to -11 Fig. 5a.LE5 to -9, LE7N and low-pressure side of LT5 to -11 Rubber cord joint O-ring Outlet valve guard...

  • Page 12: Air Filter

    Industrial Air Division Torque values 10 Nm 23 Nm M10: 45 Nm 5.3 Air filter Notes Never remove the element while the compressor is running. Never use damaged elements. Servicing 1. Unscrew cap (1-Figs. 1). Lift off the cover of the filter element and the element.
  • Page 13 → Switching-off pressure bar(e) Switching-off pressure bar(e) LT5, -6 Example: LE5, -6 Stopping pressure: 7 bar(e) Starting pressure: adjustable between 3.1 and 5.4 bar(e) Example: LT5, -6 Stopping pressure: 16 bar(e) Starting pressure: adjustable between 7 and 13 bar(e) Figs. 7. Diagrams, pressure differential adjustment range →...

  • Page 14: Relief Valve (Only Lt)

    Industrial Air Division LE7 up to -12 LT7 up to -12 LE7N/9N → → Switching-off pressure bar(e) Switching-off pressure bar(e) Figs. 9. Diagrams, pressure differential adjustment range 5.6 Relief valve (27-Figs. 1) (only LT) The relief valve protects the LP side of the compressor. It is fitted on the air inlet pulsation damper of the HP cylinder.

  • Page 15: Principal Data

    Industrial Air Division See 1i Unit does not start e. 2) Muffler choked Electrical failure Replace muffler element Check or have electrical system checked. Check fuses in motor starter Air receiver pressure rises above maximum and causes Overload relay cut out safety valve to blow Reset overload relay by means of knob (2-Fig.
  • Page 16 Industrial Air Division Type FAD 2) FAD 2) Max. un- Piston dis- Piston dis- Recommen- Recommen- Speed Speed Crankcase loading placement placement ded motor ded motor oil capacity pressure size size 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz...

  • Page 17: Conversion List Of Si Units Into British Units

    Industrial Air Division Type Maximum ambient Safety valve opening Relief valve opening Hose connection temperature pressure pressure °C bar(e) bar(e) B.S.P. (in) LE12 10.5 12.5 LE12 Pack 10.5 12.5 LE7N 1) 10.5 LE9N 1) 10.5 LT7 Pack LT8 Pack LT9 Pack LT11 LT11 Pack LT12...

  • Page 18: Electrical Diagrams

    Industrial Air Division 9 Electrical diagrams Setting dial e1. Motor overload relay S2. Air pressure switch Fig. 10. Electrical diagram of LE/LT5, -6 with monophase motor Fig. 11. Electrical diagrams of LE/LT5, -6 with three-phase motor 2920 5997 03...
  • Page 19 Industrial Air Division Fig. 12. Electrical diagram of LE/LT7 up to -12 and LEN without transformer F1/3. Fuses F21. Overload relay Line contactor Delta contactor Star contactor Compressor motor PSR19. Air pressure switch Hourmeter Selector switch: 1/2 AUTO - O - AUTO TSHH11.
  • Page 20 Industrial Air Division Fig. 13. Electrical diagram of LE/LT7 up to -12 and LEN with transformer 2920 5997 03...

  • Page 21: Dimension Drawings

    Compressor cooling air and air inlet [14] Hole 15 x 24 (4 x), can be used for fixing without rubber pads Figs. 14 up to 21. Dimension drawings Fig. 14. LE5, -6, -6C/LT5, -6, -530 Power Pack 2920 5997 03...
  • Page 22 Industrial Air Division Fig. 15. LE7, -7N, -8, -8C/LT7, -8, -730 Power Pack 2920 5997 03...
  • Page 23 Industrial Air Division Fig. 16. LE9, -9N, -11, -12/LT9, -11, -12, -930, -1230 Power Pack 2920 5997 03...
  • Page 24 Industrial Air Division Fig. 17. LE5, -6, -6C/LT5, -6 Complete Unit 2920 5997 03...
  • Page 25 Industrial Air Division Fig. 18. LE7, -7N, -8, -8C/LT7, -8 Complete Unit 2920 5997 03...
  • Page 26 Industrial Air Division Fig. 19. LE9, -9N, -11, -12/LT9, -11, -12 Complete Unit 2920 5997 03...
  • Page 27 Industrial Air Division Fig. 20. LE/LT7, -8, -9, -11, -12 Complete Unit with optional silencing hood 2920 5997 03...
  • Page 28 Industrial Air Division Fig. 21. LE/LT7, -8, -9, -11, -12 Pack 2920 5997 03...

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