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LW SC-300 E / LW SC-350 E
Version: 06.12.2022

M A I N T E N A N C E A N D S E R V I C E

Safety valve test

Safety valve test as follows:

• Depressurise the system.

• Turn the adjusting screw of the final pressure switch one

turn clockwise (please see chapter “Final pressure switch“,
page A-47).

• Start the compressor.

• Watch the final pressure gauge. The safety valve should

open when reaching working pressure of the compressor.
If not, switch off the unit and take out of service until the
safety valve has been replaced.

• Switch off the compressor.

• Turn the adjusting screw of the final pressure switch back

(one turn counterclockwise).

• Check the cut-out pressure. Adjust if necessary!

The safety valve test is now completed.

Note

Do not fill any tank during test phase!

Pressure switch

Содержание SC-300 E

Страница 1: ...E Manufacturer in terms of 97 23 EC The full name and address of the manufacturer is Lenhardt Wagner GmbH An der Tuchbleiche 39 68623 H ttenfeld Germany Phone 49 0 62 56 85 88 0 0 Fax 49 0 62 56 85 88...

Страница 2: ...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 reductio...

Страница 3: ...A Operating Instructions Breathing Air Compressor LW SC 300 E LW SC 350 E Version 12 22 E...

Страница 4: ...e instructions 15 Transportation instructions Safety regulations 16 Installation Installation in closed rooms 18 Dimensions 19 Minimum distances 20 Ventilation 21 Electrical Installation 22 23 Operati...

Страница 5: ...idge 52 Filter cartridge change 53 Filter housing Maintenance 54 Inlet filters Inlet filter cartridge change 55 Cylinder heads and valves 56 Replace inlet and outlet valve 1st stage 57 58 Replace inle...

Страница 6: ...from these instructions is excluded from warranty and liability for this product Carry out other commissioning steps only if you have fully understood the following contents Before commissioning and u...

Страница 7: ...ing Auto shut down also available Remote Tab Control RTC Additional high pressure outlet Additional high pressure outlet Power cable and plug Special voltages frequencies on request Automatic condensa...

Страница 8: ...mm 18 18 Medium Compressed Air Breathing Air Intake Pressure atmospheric Oil Pressure bar 0 6 to 4 0 0 6 to 4 0 Oil Capacity l 1 8 1 8 Intake Temperature C 0 45 0 45 Ambient Temperature C 5 45 5 45 Co...

Страница 9: ...A LW SC 300 E LW SC 350 E Version 06 12 2022 Unit Assembly D E S C R I P T I O N No Designation 1 Filling pressure gauge 2 Switchboard 3 Filling hoses optional without filling hoses 4 Filling valves...

Страница 10: ...Page A 8 A LW SC 300 E LW SC 350 E Version 06 12 2022 Switchboard D E S C R I P T I O N 1 2 3 4 5 No Designation 1 Emergency shut off switch 2 Hour counter 3 ON button 4 OFF button 5 Drain test button...

Страница 11: ...essure Switch Auto Stop 19 Filtergeh use Filter Housing 20 l Wasserabscheider Oil Water Separator 21 Druckhalteventil Pressure Maintaining Valve 22 R ckschlagventil Non Return Valve 23 l Wasserabschei...

Страница 12: ...A S A F E T Y P R E C A U T I O N S...

Страница 13: ...the instruction manual is complied 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 T...

Страница 14: ...022 Safety instructions on the unit Importance of notes and warning signs that are affixed to the compressor according to the application or its equipment S A F E T Y P R E C A U T I O N S Warning Hig...

Страница 15: ...se this product Comply with all local and national rules and regulations associated with this product Only trained and competent personnel are permitted to inspect repair and service the product Only...

Страница 16: ...ensure that the machine is only taken into operation under safe and functional conditions Only operate the compressor if all protective and safety equipment e g detachable protective equipment are pr...

Страница 17: ...splay a warning sign on the main switch The machine and especially the connections and fittings should be cleaned from oil fuel and maintenance products at the beginning of the maintenance repair Do n...

Страница 18: ...ower Do not stand or work under suspended loads Also separate from minor relocation machinery system of any external energy supply Before recommissioning reconnect the machine to the mains according t...

Страница 19: ...A I N S TA L L AT I O N...

Страница 20: ...e where natural ventilation is not ensured or other systems having high radiation are operating in the same room measures must be taken to provide artificial ventilation Intake air must be free from n...

Страница 21: ...Page A 19 A LW SC 300 E LW SC 350 E Version 06 12 2022 I N S T A L L A T I O N Dimensions Fig Dimensions...

Страница 22: ...t of fresh air available To prevent serious damage ensure that the cooling air flow can flow freely The following minimum distances must be adhered Front side min 1500 mm sides min 500 mm rear side mi...

Страница 23: ...cooling air flow can flow freely The necessary cooling air flow can be calculated by using the following formula 300 x drive power kW required cooling air flow m h Example 11kW motor 300 x 11kW 3300...

Страница 24: ...ate on the compressor The fusing should be done in accordance with the valid regulations of the responsible electricity supply company When connecting the unit to the electrical supply check the compr...

Страница 25: ...al motor power Fusing start A Connection in mm kw A Direct Star Delta Contactor supply Motor S D 2 2 5 10 1 5 1 5 4 8 5 20 2 5 1 5 5 5 11 3 25 20 2 5 1 5 7 5 15 2 30 25 2 5 1 5 11 21 7 35 4 2 5 15 29...

Страница 26: ...A O P E R AT I O N...

Страница 27: ...022 O P E R A T I O N Important operation instructions Note Ensure that all persons handling the compressor are familiar with function and operation of the unit i Wear hearing protection When working...

Страница 28: ...the OFF button and contact an authorised electrician 3 Check oil pressure if oil pressure gauge is installed 4 Run the compressor for about 2 minutes 5 Close the open filling valve carefully 6 Run the...

Страница 29: ...low oil level Risk of accidental loss destruction or deterioration Check V belt tension The V belts could lose tension during transportation Please check the V belt tension before starting the compres...

Страница 30: ...If the direction of rotation is wrong the guide pistons of the 2nd and 3rd stages can not be sufficiently lubricated with the consequence that the pistons will be damaged Furthermore cooling air flow...

Страница 31: ...Y C O M M I S S I O N I N G Prior to daily operation observe the following Ensure cooling air can flow freely Check compressor oil level by the oil sight glass Check if filter cartridge is in place o...

Страница 32: ...rostatic tested check last test date are rated for the final pressure are free from humidity i 1 Close all filling valves 2 Connect the closed compressed air cylinders 3 Open cylinder valves 4 Start c...

Страница 33: ...hich automatically shuts down the system when the corresponding final pressure is reached During filling process you can shut down the system at any time by pushing the red button OFF or the emergency...

Страница 34: ...A R E M E D Y I N G FA U LT S...

Страница 35: ...alve leaky Replace Pipes heat exchanger broken Replace Condensate drain valves leaky Unscrew valves check sealing surfaces clean replace if necessary Final pressure switch stop unit Verify settings re...

Страница 36: ...diameter Wrong compressor rotation direction Ensure correct phase rotation observe rotation direction arrow Inlet and outlet valves contaminated defective Clean replace if necessary Safety valve leaks...

Страница 37: ...emedy Pressure stages are not as prescribed control pressure of pneumatic condensate valve too low Check corresponding inlet and outlet valve replace if necessary Piston sealing of pneumatic condensat...

Страница 38: ...cartridge already partly saturated before change Store filter cartridges properly dispose defective cartridges Cylinder s piston s or piston ring s defective Replace Operating temperature too high Ens...

Страница 39: ...A M A I N T E N A N C E A N D S E R V I C E...

Страница 40: ...only be carried out by trained personnel This is necessary because all maintenance work can not be explained exactly and detailed in this manual Only use authentic spare parts for service work Danger...

Страница 41: ...Check condition of all filling hoses Check filter cartridge lifetime Operate unit to final pressure and check function of final pressure switch Every 3 months or as required Maintenance work Type Quan...

Страница 42: ...e see above Annually Maintenance work Type Quantity Order No Oil change if less than 1000 operating hours 1 8 000001 Check V belt tension and condition LW 300 E 50Hz 2 001685 LW 350 E 50Hz 2 001685 Ch...

Страница 43: ...ge 1 002123 Replace o rings of water separators 2nd stage 1 001255 Replace o ring of oil separator 1 001294 Replace silencer 1 000178 Replace sintered metal filter of oil separators 1 000184 Replace s...

Страница 44: ...N C E A N D S E R V I C E Every 2000 operating hours latest in 10 years Maintenance work Type Quantity Order No Replace all inlet and outlet valves incl Gaskets 1st stage 1 002093 2nd stage 1 000542...

Страница 45: ...r Use the tensioning screw to move the electric motor until the V belt tension is sufficient Then tighten mounting nuts and check V belt tension We recommend using a V belt tension gauge Correct V bel...

Страница 46: ...oil residues Insert the oil dipstick back into its tube and screw it until stop Unscrew oil dipstick again The oil level should be between the notch and the end of the oil dipstick If there is no oil...

Страница 47: ...ally Fill oil by using a funnel Check oil level The oil level should be between the middle and upper end of the oil sight glass Screw oil fill port manually in and tighten with the adjustable wrench T...

Страница 48: ...sinter filter Fig 4 Place filter washer and washer Fig 5 and tighten nut Place filter cover fix and tighten mounting screws of the filter cover Fig 2 Screw and tighten mounting screws of the oil filte...

Страница 49: ...screw clockwise Reducing cut out pressure Turn the adjusting screw anti clockwise Adjust the pressure switch in steps of a quarter turn Restart the compressor after every adjustment step to verify th...

Страница 50: ...s The timer is located in the switch box and activates the dump valves about every 15 minutes To release the complete condensate through the black plastic hoses we recommend using an 20 l container at...

Страница 51: ...er Remove sinter filter holder Fig 2 Change sinter filter Fig 3 screw in new sinter filter by using a suitable screwdriver Change o ring previously grease new o ring Fig 4 Place sinter filter holder i...

Страница 52: ...s Open ring nut and remove separator top Fig 1 Loosen nut at the separator top Change sinter filter Fig 2 Reassemble all parts and tighten nut Change o ring previously grease new o ring Fig 3 Place se...

Страница 53: ...s follows Loosen pipe connections and mounting screws Remove pneumatic condensate valve Loosen connection Fig 2 Change sinter filter Fig 3 Tighten horizontal screw Mount pneumatic condensate valve Tig...

Страница 54: ...Oil residues are bounded The breathing air filter cartridge consists of a molecular sieve and activated carbon filter All breathing air filter cartridges are factory vacuum sealed We recommend unpacki...

Страница 55: ...change is now completed Fig 1 Loosen filter housing topcap by using the filter tool Note Ensure that the old filter cartridge is disposed correctly at an approved waste point i Caution Do not run the...

Страница 56: ...ase new o ring Fig 2 Screw the filter housing cover in by using the filter tool and turn it back turn This avoids tightening of the cover due to vibration Fig 1 Dismantle the mounting bracket Fig 3 Un...

Страница 57: ...filter cartridge should be replaced every 1 000 working hours depending on pollution grade Inlet Filter Cartridge Change Inlet filter cartridge change as follows Loose nut Fig 1 Remove cover and repla...

Страница 58: ...ons Dismount valve heads to change valves The three valves are combined inlet and outlet valves The first stage is a plate valve The stages two and three are made of a spring operated piston which act...

Страница 59: ...Outlet Valve Loosen pipe connections Loosen screw connections of the crankcase ventilation hose Fig 1 Remove hose Loosen valve head screws Remove valve head Pull out inlet and outlet valve Fig 2 CAUT...

Страница 60: ...valve gasket paper gasket Fig 4 CAUTION Do not turn the inlet and outlet valve inside the cylinder The paper gasket could cover inlet channels Refit the valve head and tighten the valve head screws c...

Страница 61: ...valve CAUTION Ensure correct mounting position of the upper valve gasket Fig 5 Insert new inlet and outlet valve into valve head CAUTION Observe correct position between valve centre hole and valve he...

Страница 62: ...seals to avoid manipulation of the limit value settings Safety valves with removed seals have to be immediately checked for the prescribed settings and replaced if necessary The safety valve of the f...

Страница 63: ...ompressed air from blowing off final pressure gauge 0 bar When the adjusted opening pressure is reached 160 bar the purified compressed air flows via pressure maintaining and non return valve to the f...

Страница 64: ...A 47 Start the compressor Watch the final pressure gauge The safety valve should open when reaching working pressure of the compressor If not switch off the unit and take out of service until the saf...

Страница 65: ...halter und halten Sie die Taste gedr ckt Untersuchen Sie den Kompressor nach Abblasger uschen Leichtes Zischen durch Ansaugfilterstutzen ist zu vernachl ssigen Sollten Abblasger usche auftreten lokali...

Страница 66: ...ar x content volume litres from 200 up to 1000 Example Filter housing 0 98 l Maximum operating pressure 350 bar Content volume 0 98 litres 350 bar x 0 98 litres 343 343 is bigger than the minimum of 2...

Страница 67: ...A M A I N T E N A N C E R E C O R D S...

Страница 68: ...urname Name Date Place Signature Instructor By adding themselves to this list the person that signs it confirms having been given a yearly introduction instruction about the function and operation of...

Страница 69: ...Page A 67 A LW SC 300 E LW SC 350 E Version 06 12 2022 M A I N T E N A N C E R E C O R D S Top up oil oil change Date Operating hours Oil quantity l Name...

Страница 70: ...Page A 68 A LW SC 300 E LW SC 350 E Version 06 12 2022 M A I N T E N A N C E R E C O R D S Cartridge change Date Operating hours Difference Name...

Страница 71: ...Page A 69 A LW SC 300 E LW SC 350 E Version 06 12 2022 M A I N T E N A N C E R E C O R D S Maintenance work Description Date signature...

Страница 72: ...Page A 70 A LW SC 300 E LW SC 350 E Version 06 12 2022 M A I N T E N A N C E R E C O R D S Replaced Parts Designation Part number Date signature...

Страница 73: ...rain valves Store the compressor in a cool dry place free from dust and contamination A dust cover is recommended as long as condensation can be avoided If compressor unit should be stored for a perio...

Страница 74: ...When recommissioning proceed according to the operating instructions Disposal The product must be disposed in accordance with national waste disposal regulations and by an appropriate waste disposal c...

Страница 75: ...E A T T A C H M E N T Version 11 12 E...

Страница 76: ...350 bar 1 100 l min Suitable media Media resistant non corrosive gases The safety valve is used for protection of pressurized components eg pipelines pressure vessels or the compressor itself The han...

Страница 77: ...e problem is on the system A constant blowing of the safety valve is not permitted the sealing seat of the valve can be damaged The error on the system must be detected and repaired before further fil...

Страница 78: ...ately Notes The safety valve must be installed directly on the protected pressure vessel and or the plant The safety valve must be installed in an upright position The flow area of the port must be gr...

Страница 79: ...INFORMATIONON THE SERVICE LIFE OF L W HIGH PRESSURE HOSES...

Страница 80: ...bly and before commissioning 3 Recurring test 4 Procedure for hose lines found to be defective 4 Test intervals 4 Persons qualified to test hose lines 5 Maintenance Replacing hose lines 6 Immediate re...

Страница 81: ...regarding type scope and deadlines as well as the replacement intervals must be documented in writing as occupational health and safety measures The results of the tests must also be recorded e g tog...

Страница 82: ...replaced at the same time precautions must be taken to prevent mix ups of the connections or the installation points Test intervals Deadlines for the recurring tests of the hose lines should already b...

Страница 83: ...t be sufficiently familiar with the conditions that demand the performance of tests such as the result of the risk assessment or observations during the working day there is proof of recent profession...

Страница 84: ...ite properties and reduces the performance of the hose lines This limits the service life of a hose line and the operator must ensure that hose lines are replaced at appropriate intervals Immediate re...

Страница 85: ...e guideline given above for a replacement interval of six years for hose lines meeting normal requirements includes a maximum storage period of two years The guideline value of two years for hose line...

Страница 86: ...void storage temperatures below 10 C for elastomers Do not use ozone generating light fittings or electrical devices that may produce sparks in the immediate vicinity Ozone generating light fittings a...

Страница 87: ...ANNEX...

Страница 88: ...he hose is routed via a kink protector if necessary on the connecting element sufficient clearance prevents external mechanical influences or abrasion on the edges hose bridges prevent damage being ca...

Страница 89: ...arried out before the functional test All parts of the system must be tested at least at the maximum working pressure that could be achieved taking into account all intended applications Are the hose...

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