L&W Compressors LW 230 E II Compact User manual

C H A P T E R O V E R V I E W
Operating Instructions ...............................................................................................................
............................................................................................................................................................
Spare Parts Lists ..........................................................................................................................
Options (if equipped) .................................................................................................................
Attachment ....................................................................................................................................
A
B
C
D
E
Manufacturer in terms of 2014/68/EU
The full name and address of the manufacturer is:
Lenhardt & Wagner GmbH
An der Tuchbleiche 39
68623 Hüttenfeld / Germany
Phone: [phone] - 85 88 0 - 0
Fax: [phone] - 85 88 0 - 14
E-Mail: [e-mail]
Internet: www.lw-compressors.com

S E R V I C E I N F O R M A T I O N / W A R R A N T Y
Compressor information
Type designation
Serial number
Date of construction
Purchase information
Purchase date
First commissioned on
Warranty period
Dealer's stamp
Warranty
L&W will uphold warranty claims made during a period of 12 months from the invoice date.
If the compressor was purchased from an official L&W dealer, the date on the dealer's invoice is
valid. Warranty claims can only be made on presentation of the original invoice.
Should verifiably defective parts have been delivered, we will decide to either replace the parts or
repair them. The resulting transport and assembly costs will be invoiced.
No reduction of the purchase price or changes to the contract can be made. The parts for which a
claim is being made should be kept safe by the purchaser and, when requested, sent to us at their
cost. Replaced parts become the property of L&W. If maintenance work is carried out without our
knowledge or permission by the purchaser or a third party, we are absolved from any liability for
warranty claims. As a matter of principle, warranty claims can only be made by the initial purchaser.

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Operating Instructions
Breathing Air Compressor
LW 230 E II Compact
LW 280 E II Compact
LW 320 E II Compact
Version: 20.05.2023

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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T A B L E O F C O N T E N T S
Genera Information and Technica Data
Genera Information / Description of Warning Symbo s .................................................................... 4
Scope of De ivery .............................................................................................................................. 5
Technica Data .................................................................................................................................. 6
Unit Assemb y ................................................................................................................................... 7
Switchboard ..................................................................................................................................... 8
F ow chart ......................................................................................................................................... 9
Safety Precautions
Intended Use / Operators ................................................................................................................ 11
Safety instructions on the unit ........................................................................................................ 12
Genera Safety Precautions ............................................................................................................. 13
Unit customised safety notices ....................................................................................................... 14
Maintenance instructions ............................................................................................................... 15
Transportation instructions / Safety regu ations .............................................................................. 16
Insta ation
Insta ation in c osed rooms ............................................................................................................ 18
Dimensions ...................................................................................................................................... 19
Minimum distances ........................................................................................................................ 20
Venti ation ...................................................................................................................................... 21
E ectrica Insta ation ................................................................................................................ 22 - 23
Operation
Important operation instructions .................................................................................................... 25
First commissioning ................................................................................................................. 26 - 28
Dai y commissioning ....................................................................................................................... 29
Fi ing procedure ............................................................................................................................. 30
Switch off the compressor .............................................................................................................. 31
Remedying fau ts
............................................................................................................. 32 - 36
Maintenance and Service
Service, Repair and Maintenance .................................................................................................... 38
Maintenance Lists / Maintenance Interva s ............................................................................... 39 - 42
Service Kits ..................................................................................................................................... 43
Check V-be t tension / Tension V-be t .............................................................................................. 44
Compressor ubrication ................................................................................................................... 45
Oi change ...................................................................................................................................... 46
Oi sieve change ............................................................................................................................... 47
Manua condensation dump system ............................................................................................... 48

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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T A B L E O F C O N T E N T S
Maintenance and Service
Oi / Water separators 1st and 2nd stage - Maintenance ................................................................ 49
Fi ter housing / Fi ter cartridge ........................................................................................................ 50
Fi ter cartridge change ..................................................................................................................... 51
Fi ter housing - Maintenance ........................................................................................................... 52
In et fi ters / In et fi ter cartridge change ......................................................................................... 53
Cy inder heads and va ves ............................................................................................................... 54
Rep ace in et and out et va ve 1st stage ................................................................................... 55 - 56
Rep ace in et and out et va ves 2nd and 3rd stage .......................................................................... 57
Safety va ves ................................................................................................................................... 58
Pressure maintaining / non return va ve .......................................................................................... 59
Safety va ve test .............................................................................................................................. 60
Leak test ......................................................................................................................................... 61
Pressure gas vesse test ................................................................................................................... 62
Maintenance records and Storage
Maintenance records ............................................................................................................... 64 - 68
Conservation / storage of the compressor / De-conservation, commissioning ................................. 69
Transportation instructions / Disposa ............................................................................................. 70

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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Warning
Indicates a potentia y hazardous situation which, if not avoided, cou d resu t in physica
injury or damage to the product or environment.
Caution
Indicates an imminent y hazardous situation which, if not avoided, cou d resu t in serious
injury, physica injury or death.
Genera Information
We strong y recommend reading this manua thorough y prior to operation and fo ow a the safety
precautions precise y. Damage resu ting from any deviation from these instructions is exc uded from
warranty and iabi ity for this product. Carry out other commissioning steps on y if you have fu y
understood the fo owing contents.
Before commissioning and using the unit, carry out a the essentia pre iminary work and measures
concerning ega regu ations and safety. These are described on the fo owing pages of this
operation manua .
G E N E R A L I N F O R M A T I O N
!
!
Note
Indicates additiona information on how to use the unit.
i
Description of marks and warning signs
The fo owing warning signs are used in this document to identify the corresponding warning notes
which require particu ar attention by the user. The warning signs are defined as fo ows:

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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D E S C R I P T I O N
Scope of De ivery
Compressors are provided in different equipped versions.
Versions
Filling pressure versions:
• PN 225 bar
• PN 330 bar
• PN 225 / 330 bar
Specifications
Options
• Automatic condensate drain with condensate
container inc . condensate stop va ve
• Automatic stop at fina pressure
• Auto start system
• 200 and 300 bar para e fi ing pressures
• Oi pressure gauge and intermediate pressure
gauges
• Oi pressure monitoring c/w auto shut down
• Cy inder head temperature monitoring with
auto shut down
• 0.8 Prefi ter (En arged the ifetime of the
fi ter by approx. 5 hours)
• Puracon fi ter monitoring
• Additiona high pressure out et
• Power cab e and p ug
• Specia vo tages / frequencies on request
• E ectro motor (Standard E-Motor / 400V /
3 Phase / 50 Hz)
• Painted stee frame and fan be t guard (RAL
6026)
• Hour counter
• Motor protection switch (bei LW 230 E II
Comact a s Option)
• Start/ Stop and emergency stop switch
• Phase monitoring c/w shut down at wrong
direction of rotation
• Manua condensate drain
• 1 x Fi ing hose c/w fi ing va ve
• Pressure maintaining and non return va ve
• A pistons c/w stee piston rings
• Improved ubrication system with adjustab e
oi pump c/w oi sieve
• Low pressure oi pump and fi ter
• Oi - / Water separators in stain ess stee
• Safety va ves after each stage
• 3 x concentric suction/pressure va ves
• Fi ing pressure to your choice (200 or 300
bar)
• Connections to your choice (DIN 200 bar or
300 bar, CGA 200 bar or 300 bar and INT)
• 1.7 iter fi ter container
• Breathing air purification an accordance to EN
12021

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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D E S C R I P T I O N
Technica Data
Technica Data LW 230 E LW 280 E LW 320 E
Capacity [ /min]: 230 280 320
Max. Operating Pressure [bar]: 350 350 350
RPM [min
-1
]: 1080 1300 1450
Number of Pressure Stages: 3 3 3
Cy inder Bore 1st Stage [mm]: Ø 95 Ø 95 Ø 95
Cy inder Bore 2nd Stage [mm]: Ø 40 Ø 40 Ø 40
Cy inder Bore 3rd Stage [mm]: Ø 18 Ø 18 Ø 18
Medium: Compressed Air / Breathing Air
Intake Pressure: atmospheric
Oi Pressure [bar]: +0.6 to +4.0 +0.6 to +4.0 +0.6 to +4.0
Oi Capacity [ ]: 1.8 1.8 1.8
Intake Temperature [°C]: 0 < +45 0 < +45 0 < +45
Ambient Temperature [°C]: +5 < +45 +5 < +45 +5 < +45
Coo ing Air Vo ume [m³/h]: > 1650 > 2250 > 2250
Vo tage: 400 V / 3 phase / 50 Hz
Protection C ass Drive Motor: IP 54 IP 54 IP 54
Drive Power [kW]: 5.5 7.5 7.5
RPM Motor [min
-1
]: 2890 2890 2890
Start: Star/De ta
Noise eve from a distance of 1 m [dB(A)]: 82 83 83
Dimensions W x D x H [mm]:
Weight [kg]: approx. 195 approx. 195 approx. 195
Content Vo ume Fi ter housing [ ]: 1.7 1.7 1.7
1200 x 600 x 900
Breathing air treatment capacity [m3]: 900 at +20°/
72 Hours
900 at +20°/
54 Hours
900 at +20°/
46 Hours

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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Unit Assemb y
D E S C R I P T I O N
No. Designation
1 Fi ing va ve
2 Fi ing pressure gauge
3 Fi ing hose
4 Fi ter housing
5 Pressure maintaining / non return va ve
1
2
4
5
3
Note
Fo owing options for the shown compressor:
Auto shut down, automatic condensation drain, two additiona fi ing hoses, intermediate
pressure gauge, oi pressure disp ay, remote contro box.
i

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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Switchboard
D E S C R I P T I O N
No. Designation
1 ON button
2 OFF button
3 Emergency shut-off switch
4 Motor protection warning ight
5 Hour counter
1
2
3
4
5

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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F ow chart
D E S C R I P T I O N
30
31
1. Ansaugfi ter / Air Intake Fi ter
2. 1. Verdichterstufe / 1st Pressure Stage
3. Kondensatab aßsch auch / Condensate Re ease Hose
4. Sicherheitsventi 1. Stufe / Safety Va ve 1st Stage
5. Wärmetauscher / Heat Exchanger
7. Ö -/Wasserabscheider / Oi -/Water Separator
8. 2. Verdichterstufe / 2nd Pressure Stage
10. Sicherheitsventi 2. Stufe / Safety Va ve 2nd Stage
11. Wärmetauscher / Heat Exchanger
13. Ö -/Wasserabscheider / Oi -/Water Separator
14. 3. Verdichterstufe / 3rd Pressure Stage
16. Sicherheitsventi 3. Stufe / Safety Va ve 3rd Stage
17. Wärmetauscher / Heat Exchanger
18. Ö -/Wasserabscheider / Oi -/Water Separator
19. Druckmanometer (Fü druck) / Pressure Gauge
(Fi ing Pressure)
23. Druckha teventi / Pressure Maintaining Va ve
24. Rücksch agventi / Non-Return Va ve
25. Hochdrucksch auch / HP-Hose
26. Kondensatab aßsch auch / Condensate drain hose
27. Fü venti / Fi ing va ve
28. Kondensatab aßsch auch / Condensate drain hose
29. Fü spinde / Fi ing spind e
30. Ent üftungsspinde / Vent spind e
31. F aschenansch uss / Tank Connector
1st stage 2nd stage 3rd stage

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S A F E T Y P R E C A U T I O N S

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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Intended Use
On y use the unit in perfect condition for its intended purpose, safety and intended use and observe
the operating instructions! In particu ar disorders that may affect safety have to be e iminated
immediate y!
Use the unit exc usive y for the determined medium (see "Technica Data"). Any other use that is not
specified is not authorized. The manufacturer/supp ier sha not be iab e for any damages resu ting
from such use. Such risk ies entire y with the user. Authorization for use is a so under the condition
that the instruction manua is comp ied with and inspection and maintenance requirements are
enforced.
No change and modification to the unit can be made without the written agreement of the
manufacturer. The manufacturer is not iab e for damage to persons or property resu ting from
unauthorised modifications.
Operators
Target groups in these instructions;
Operators
Operators are persons who are authorized and briefed for the use of the compressor.
Qualified personnel
Qua ified personne are persons who are entit ed to repair, service, modify and maintain the system.
S A F E T Y P R E C A U T I O N S
Warning
On y trained personne are permitted to work on the unit!
!
Warning
Work on the e ectrica equipment on / with the machine / unit may on y be carried out by
qua ified e ectricians.
!

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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Safety instructions on the unit
Importance of notes and warning signs that are affixed to the compressor according to the
app ication or its equipment.
S A F E T Y P R E C A U T I O N S
Warning
High voltage!
Note
Ensure correct direction of
rotation!

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
Version: 20.05.2023
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S A F E T Y P R E C A U T I O N S
Genera Safety Precautions
• Read the Operating Instructions of this product carefu y prior to use.
• Strict y fo ow the instructions. The user must fu y understand and strict y observe the
instructions. Use the product on y for the purposes specified in the intended use section of this
document.
• Do not dispose the operating instructions. Ensure that they are retained and appropriate y used
by the product user.
• On y trained and competent personne are permitted to use this product.
• Comp y with a oca and nationa ru es and regu ations associated with this product.
• On y trained and competent personne are permitted to inspect, repair and service the product.
• On y authentic L&W parts and accessories may be used for maintenance work. Otherwise, the
proper functioning of the product may be impaired.
• Do not use fau ty or incomp ete products. Do not modify the product.
• Inform L&W in the event of any product or component fau t or fai ure.
• The qua ity of the air supp y must meet EN 12021 specifications for breathing air.
• Do not use the product in areas prone to exp osion or in the presence of f ammab e gases. The
product is not designed for these app ications. An exp osion might be the resu t if certain
conditions app y.

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
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S A F E T Y P R E C A U T I O N S
Unit customised safety notices
Organisationa measures
• In addition to the instruction manua , observe and comp y with universa y va id ega and other
ob igatory regu ations regarding accident prevention and environment protection.
• In addition to the instruction manua , provide supp ementary instructions for supervision and
monitoring duties taking into consideration exceptiona factors e.g. with regard to organisation
of work, production, personne emp oyed.
• Supervise personne ’s work in accordance with the instruction manua , taking into account safety
and danger factors.
• Observe a safety and danger notices on the compressor and check readabi ity and
comp eteness.
Safety instructions operation
• Take measures to ensure that the machine is on y taken into operation under safe and functiona
conditions. On y operate the compressor if a protective and safety equipment, e.g. detachab e
protective equipment, are provided and in good working order.
• Check the compressor at east once per day for obvious damage and defects. Inform the
responsib e department / person immediate y if anything is not as is shou d be (inc uding
operation performance). Shut down the machine immediate y if necessary and ock it.
• In case of ma function, stop the compressor immediate y and ock it. Repair ma functions
immediate y.
• If there is a fai ure in the e ectric energy supp y, shut the machine / unit down immediate y.
• Ensure safe and environmenta y friend y disposa of consumab es and o d parts.
• The stipu ated hearing protectors must be worn.
• Soundproofing equipment on the compressor has to be activated in safety function during
operation.
• When hand ing with fats, oi s and other chemica agents, observe the note for the product-
re ated safety.

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
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S A F E T Y P R E C A U T I O N S
Maintenance instructions
• Hoses have to be checked by the operator (pressure and visua inspection) at reasonab e
interva s, even if no safety-re ated defects have been detected.
• Immediate y repair any damage. Escaping compressed air can cause injury.
• Depressurise system and pressure ines before beginning repair work.
• Pressurised air ines must be aid and mounted by qua ified personne . Connections must not be
mixed up. Fittings, ength and qua ity of the piping must correspond to requirements.
• Adjustment, maintenance and inspection activities and keep appointments, inc uding
information on rep acement parts / equipment, prescribed in the operating instructions have to
be respected.
• If the machine / equipment is comp ete y off during maintenance and repair work, it must be
protected against unexpected restart. Turn off main contro device and remove the key and/or
disp ay a warning sign on the main switch.
• The machine and especia y the connections and fittings shou d be c eaned from oi , fue and
maintenance products at the beginning of the maintenance / repair. Do not use aggressive
c eaning agents. Use fibre-free c eaning c oths.
• Switch off compressor and c ean with a s ight y damp c oth. Remove dirt from coo ing pipes by
using a brush.
• After c eaning, examine a pipes for eaks, oose connections, chafing and damage. Immediate y
e iminate any fau ts.
• A ways retighten any screw connections oosened for maintenance or repair work.
• If it is necessary to remove safety devices for maintenance and repair work, these must be
rep aced and checked immediate y after comp etion of the maintenance or repair work.
• The e ectrica equipment of the compressor must be regu ar y checked. Defects, such as oose
screw connections or burnt wires, must be immediate y rectified by e ectrica y ski ed personne .
• On y personne with particu ar know edge and experience with pneumatics may carry out work
on pneumatic equipment.
• On y personne with particu ar know edge and experience in gas equipment may carry out work
on gas equipment.

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
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S A F E T Y P R E C A U T I O N S
Transportation instructions
• Parts which need to be dismant ed for transport purposes must be carefu y rep aced and secured
before taking into operation.
• The transport may on y be carried out by trained personne .
• For transportation, on y use ifting devices and equipment with sufficient ifting power.
• Do not stand or work under suspended oads.
• A so separate from minor re ocation machinery / system of any externa energy supp y. Before
recommissioning, reconnect the machine to the mains according to regu ations.
• When recommissioning, proceed according to the operating instructions..
Safety regu ations
• Inspections according to ega and oca ob igatory regu ations regarding accident prevention are
carried out by the manufacturer or by authorised expert personne . No guarantees whatsoever
are va id for damage caused or favoured by the non-consideration of these directions for use.

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I N S T A L L A T I O N

LW 230 E II Compact / LW 280 E II Compact / LW 320 E II Compact
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I N S T A L L A T I O N
Insta ation in c osed rooms
For installation in closed rooms, observe the following:
• Insta the unit horizonta y and eve . The f oor must be vibration-free and capab e of taking the
oad of the system weight.
• The compressor room must be c ean, dry, dust free and as coo as possib e. Avoid direct exposure
to sun ight. If possib e, insta unit in such a manner that the compressor fan can intake fresh air
from outside. Ensure adequate venti ation and exhaust air opening.
• When ocating the compressor in rooms of ess than 30 m³ space where natura venti ation is not
ensured or other systems having high radiation are operating in the same room, measures must
be taken to provide artificia venti ation.
• Intake air must be free from noxious gas e.g. smoke, so vent vapours, exhaust fumes etc.
• Observe the specified operating temperature (see "Technica Data")!
•
•
•
•
Appro imate value - Diameter of intake hose depending on the length of the intake hose
Danger
No operation in exp osion-hazard areas.
The unit is not approved for operation in areas prone to exp osion.
!
Hinweis
• Intake air must be free from noxious gas e.g. smoke, so vent vapours and exhaust
fumes. We recommend not to use the intake air inside the compressor housing. An
intake hose wou d be recommendab e!
i
Pos. Length of Intake Hose [m] Diameter of Intake Hose [mm]
1 ≤ 03 Ø 30
2 ≤ 10 Ø 80
3 ≤ 15 Ø 100
4 ≤ 20 Ø 120