NEPTUNE E Operating Instructions
Contents
1. The cleaner may only be con nected to a correctly installed plug socket Switching on the cleaner may cause voltage fluctuations Voltage fluctuations should not occur if the impedance at the transfer point is less than 0 15Q If in doubt ask your local electric ity supplier Maintenance and repair CAUTION Always remove the plug from the power supply before clean ing or carrying out mainte nance work on the cleaner Carry out only the maintenance operations described in the op erating instructions Use only original Nilfisk Alto spare parts Do not make any technical modifications to the high pres sure cleaner Ensure that the machine is regularly serviced by authorized Nilfisk Alto dealers in accordance with the maintenace plan Failure to do so will void the warranty CAUTION High pressure hoses fittings and couplings are important for the safety of the cleaner Use only high pressure parts ap proved by the manufacturer The power cord must not differ from the version specified by the manufacturer and may only be changed by an electrician Please contact your local au thorized Nilfisk Alto equipment distributor for all other mainte nance or repair needs Testing The cleaner conforms to the Ger man Guidelines for Liquid Spray Jet Devices The high pressure cleaner must be subjected to a safety examination in accord ance with the Accident Preven tion Regulations for Working wit2. Proceed with cleaning using the high pressure lance Brushes Clean again from bottom to top Use accessories to clean in difficult to reach places 3 Clean fragile areas such as motors rubber at lower pressure levels to avoid damage 5 2 2 Vehicle Task Accessories Method Vehicle bodywork Standard lance 1 Apply detergent to vehicle or equipment surfaces in Detergent injection order to soften up dirt and grime Apply from bottom Curved lances and to top In cases of particularly dirty vehicles pre spray underchassis washers with a product such as Allosil in order to remove traces brushes of insects etc then rinse at low pressure and apply normal car cleaning detergent Let detergents settle Detergents for 5 minutes before cleaning off Metallic surfaces can Aktive Shampoo be cleaned using RimTop Aktive Foam 2 Proceed with cleaning using the high pressure lance Sapphire Clean again from bottom to top Use accessories to Super Plus clean in difficult to reach places Use brushes in order Aktive Wax to add a mechanical cleaning effect Short lances can Allosil help for cleaning of motors and wheel arches Curved RimTop lances or undercarriage washers can be valuable for the cleaning of car underchassis and wheel arches 3 Clean fragile areas such as motors rubber at lower pressure levels to avoid damage 4 Apply a liquid wax using the pressure washer in order to protect the bodywork from pollution 1 Accessories mode
3. symbol is used to mark safety instruc tions that must be observed to prevent damage to the machine and its performance This indi cates tips and instructions to simplify work and to ensure safe opera tion Operations marked with this symbol should only be carried out by Nilfisk Alto Service Technicians 1 Important safety instructions For your own safety The high pressure cleaner should only be used by author ized persons who have been instructed in its use Although extremely easy to operate children should not be allowed to use the cleaner General Use of the high pressure cleaner is subject to the applicable local regulations Besides the operating instruc tions and the binding accident prevention regulations valid in the country of use observe rec ognized regulations for safety and proper use Do not use any unsafe work techniques Use only detergents approved by Nilfisk Alto Transport Transport of the high pressure cleaner is easy on its large wheels For safe transport in and on ve hicles we recommend preventing the equipment from sliding and tilting Secure it with tie downs and apply the parking brake on the castor wheel For transport at temperatures around or below freezing 0 C 32 F anti freeze should be drawn into the pump beforehand see chapter 6 Before starting the cleaner Before use check that the high pressure cleaner is safe and in prope
4. A amp gt 4 ai N at b gt T e A H L i a B N A NA 1 J a p NEPTUNE E Operating Instructions 301002408 2005 08 16 Contents 1 Important safety instructions 2 Description 3 Before starting the cleaner 4 Control Operation 5 Applications and methods 6 After using the cleaner 7 Maintenance 8 Troubleshooting 9 Further information 2 1 2 2 3 1 3 2 3 3 3 4 3 5 3 7 4 1 4 2 4 3 5 1 5 1 1 5 1 2 5 1 3 5 1 4 5 1 5 5 2 1 5 2 2 5 2 3 6 1 6 2 7 1 bie 7 2 1 7 2 2 7 2 3 8 1 8 2 9 1 9 2 9 4 ake dat oh hee ee has a a eee ang cae A E og tet ee 4 PUNOS Oguni E ead aeeeeeeiaccexereened 6 Operating elemente see eee eee eee eee eee eee eee 6 Transport and assembly sssesvsvsvsv oas esss sss ves vessz vevas ross 7 Setthe Drake TTT 7 Fill up detergent tanks ccccesccceeeeeseecceeeeeeeceeeeeeeeeneeeeenees 7 Connecting the high pressure hose sees eee eee eee eee 7 Connecting the water supply eee e eee eee eee eee eee eee 8 Electrical COMME CHON aa autan Eagan S 39T rrak zes 8 Antifreeze before first use esse eee ereer e essere neee ennenen 8 Connecting the spray lance to the spray gun eee eee 8 Switching on the leanet asz saaya oeeie nine 9 Using cleaning Agenissa 2scvtas rias 9 PO CHINIQU ES TT 10 isr lT 10 Detergent and FEOSam cccccessecceeeeeseeeeeeeessenee
5. ance to the spray gun IS NOTE Always remove any dirt from the nipple before connecting the spray lance to the spray gun Water supply hose should be a re inforced hose and have a minimum inside diameter of 3 4 19 mm CAUTION The cleaner should only be con nected to a correctly installed electrical supply The machine is flushed with anti freeze at the factory to protect it against freezin this mixture ap Control Operation 1 Attach quick connect adapter found with Owners Manual to the water supply hose 2 Rinse the water supply hose briefly in order to prevent sand an other dirt particles entering into the machine 3 Attach water supply hose with adapter to inlet quick connec tor 4 Open water supply faucet 1 Observe specifications in chapter 9 3 2 Observe safety instructions in chapter 1 3 Insert the plug into the electri cal socket prox 3 I may be captured in a suitable container for reuse 1 Pull the blue quick release grip A of the spray gun for wards and lock it by turning it to the left 2 Insert the nipple of the spray lance C into the quick re lease connection and turn the blue quick release grip to the right B 3 Pull the spray lance or other accessory forwards to check that it is securely attached to the spray gun T Accessories model variants 4 2 Switching on the cleaner IS Automatic temperature
6. ary or wash brushes offer this supplementary effect that cuts through dirt High pressure is not always the best solution and may also damage surfaces The cleaning effect also depends upon water flow Pres sure levels of around 100 bar 1450 psi may be sufficient for vehicle cleaning in association with hot water and higher flow levels give the ability to rinse and flush away large amounts of dirt easily 10 1 Accessories model variants 5 2 5 2 1 Agriculture Some typical cleaning tasks Task Accessories Method Stables Chemical Foam 1 Soaking apply foam to all surfaces bottom to top Pig Pens Sties Injectors and wait for approx 30 minutes Foam lance 2 Remove the dirt from surfaces with the high pressure Cleaning of Powerspeed lance lance or chosen accessory Again clean from bottom walls floors and Floor Cleaner to top on vertical surfaces equipment 3 To flush away large quantities of dirt change to low Detergents pressure mode and use the higher flow to push away Disinfectant Universal the dirt Alkafoam 4 Use recommended disinfectant products and methods to ensure hygiene Apply DES 3000 disinfectant once Disinfectant the surfaces are perfectly clean DES 3000 Machinery Detergent injection 1 Apply detergent to vehicle or equipment surfaces in Tractors Powerspeed lances order to soften up dirt and grime Apply from bottom ploughs etc Curved lances and to top underchassis washers 2
7. control The electronically controlled mix ing valve regulates the preselected work temperature while sufficiently hot water is in the boiler If the water temperature in the boiler drops un der the preselected work tempera ture the indicator lamp 8 goes out 1 Wait until the boiler has heated the water to preselected tem perature the indicator lamp blinks during heating up or 2 Operate the machine with lower than preselected working tem perature During continuous operation the work temperature oscillates itself on the following values IS The cleaner switches off automati cally twenty seconds after the spray gun has been closed To start the cleaner again squeeze the trigger and the machine will start automati cally 4 3 Using cleaning agents B ny S 7 lt gt E 4 eN j te Working SS temperature E12 34 C E 24 46 C The specified values refer to a water inlet temperature of 12 C If warmer water is supplied permissible up to max 70 C higher values are reached 1 G 1 3 5 ca 3 5 ca NOTE Never allow clean ing agent to dry on the surface to be cleaned The sur face may be dam aged The percentage shown in the illus tration are only approximate data For special applications such as dis infection the exact detergent con centration ha
8. eeesseeeeeeees 10 TOMPA ocio 10 Mechanical ENGG seriuse 10 High Water Flow or High Pressure esse esec essere esse ey 10 Some typical cleaning asa eee eee eee eee 11 AQUICUNUNG sists ceceeecieananttiet rua EN 11 Uie CIS T 11 Buildings and Eoauipment ns gg vras vygs gs soyyyrreg roye es 12 Switching off the cleanen isisi vex geg inensis rsy roy ors 12 Disconnecting supply Ines ss sss ee sese eee essere ee esse cesses ey 12 Storing the cleaner below 0 C 32 F see eee eee 12 Maintenance Schedule sees 13 Maintenance WOrk cccecceeeeeeeeeeeeeeeeeneeeeeseeneeeeeeeenneeeeees 13 Water e TTT 13 Checking the pump oil quality sese eee eee eee 13 Changing the PUMP Oil riesaksi neia Es sr 14 Indications ON Display nrag eaea aisa agroaz 14 Indication lights on Control Panel cece ee esse essere ee 15 Other Faults T 15 Recycling the ClBaNeT hassos 15 Guarantee T 16 TECHNIC al Wate seis exc ce seth cadets eceg nantes sant snaetemnatieansiads 16 EU Declaration of Conformity sese eee eee eee ee 16 1 Accessories model variants NEPTUNE E english NEPTUNE E english Symbols used to mark instructions Before using the high pressure cleaner be sure to also read the enclosed operat ing instructions and keep them within reach at all times cil Safety instructions in these operating instructions which must be observed to prevent risks to persons are marked with this danger symbol This
9. f specific clean ing tasks Accessories and detergents when correctly chosen can increase the efficiency of your pressure washer Here is some basic information about cleaning Encrusted or thick layers of dirt can be loosened or softened up by a period of soaking This is for example an ideal method within agricul ture for example within pig sties The ideal soaking method can be achieved by using foam or simple alkaline detergent Let the product lie on the dirty surfaces for about 30 minutes before pressure washing The result will be a much quicker high pressure cleaning process Foam or detergent should be applied onto dry surfaces so that the chemical product is in direct contact with the dirt Detergents are ap plied from bottom to top for example on a automobile bodywork in order to avoid super clean areas where the detergent may collect in higher concentrations and streams downwards Let the detergent work for several minutes before rinsing before rinsing and never let it dry on the surface being cleaned Detergents are more effective at higher temperatures Greases oils and fats can be broken down more effectively at higher temperatures also Proteins can be cleaned at temperatures of around 60 C 140 F Oils and traffic film around 70 C 158 F and grease can be cleaned at 80 90 C 176 194 F In order to break down tough layers of dirt additional mechanical effect may be required Special lances and rot
10. h Liquid Spray Jet Devices as required but at least every 12 months by an authorised inspector After all repairs or modifications to electrical equipment the pro tective conductor resistance the insulation resistance and the leak age current must be measured Furthermore a visual inspection of the mains power lead a volt age and current measurement and a function test must be car ried out Our after sales service technicians are at your disposal as authorised inspectors The complete Accident Preven tion Regulations for Working with Liquid Spray Jet Devices are available from the Carl Hey manns Verlag KG Luxemburger Strasse 449 50939 Cologne or 1 Accessories model variants 5 NEPTUNE E english NEPTUNE E english from the appropriate associa tion of employers liability insur ances The pressure bearing parts of this high pressure cleaner have been manufactured in accord ance with 9 of the German Pressure Vessels Ordinance and successfully subjected to a pressure test Safety devices Unloadar valve Pump pressure is reduced by means of an unloader valve which returns water to the inlet side of the pump at a minimum pressure Safety temperature limiter When exceeding max permis sible water temperature in the boiler the heating is completely switched off 2 Description 2 1 Purpose 2 2 Operating elements See fold out page at front of these operating ins
11. ive equipment during sandblast ing Spray the surfaces to be treated with the mix of water and sand Rust paint etc will be stripped off These are merely several examples of cleaning tasks that can be solved by a pressure washer in asso ciation with accessories and detergents Each cleaning task is different Please consult your local dealer or Nilfisk Alto representative in order to discuss the best solution for your own cleaning tasks 6 After using the cleaner 6 1 Switching off the cleaner 1 Turn the main switch to posi tion OFF 2 Turn off water supply at faucet 3 Squeeze the spray gun trig ger until the pressure has bled off 4 Slide trigger lock to the locked position 6 2 Disconnecting supply lines 6 3 Storing the cleaner below 0 C 32 F Turn off water supply at faucet Remove the water supply hose from the cleaner To prevent accidents always carefully roll up the power cord and the high pressure hose Store the cleaner in a dry heated location to protect against freezing 12 T Accessories model variants 7 Maintenance 7 1 Maintenance Schedule 7 2 1 Water filters 7 2 2 Checking the pump oil quality 7 2 3 Changing the pump oil 7 2 Maintenance work 7 2 1 Water filters 7 2 2 Checking the pump oil quality Water filters are fitted at the water and pump inle
12. l variants 11 NEPTUNE E english NEPTUNE E english 5 2 3 Buildings and Equipment Task Accessories Method General surfaces Metallic equipment Foam injectors Standard lance Curved lances Tank cleaning head Detergents Intensive J25 Multi Combi Aktive Alkafoam Disinfectant DES 3000 3 Areas covered by amounts of loose dirt such as animal remains in slaughterhouses can be removed by using high water flow to flush away the dirt to evacuation pits or drains Tank cleaning heads can be used to clean barrels vats mixing tanks etc Cleaning heads may be hydraulically or electrically powered and give the possibility for auto matic cleaning without a constant user Apply thick foam over the surfaces to be cleaned Ap Proceed with cleaning using the high pressure lance ply on dry surfaces Apply from top to bottom on ver tical surfaces Let the foam act for up to 30 minutes for the optimal effect Use applicable accessories Use high pressure to dislodge large amounts of incrusted dirt or grime Use lower pressure and high water volume in order to rapidly flush away loose dirt and rinse surfaces Apply DES 3000 disinfectant once the surfaces are perfectly clean Rusted or damages surfaces prior to treatment Wet Sandblasting equipment 1 2 3 Connect the sandblasting lance to the pressure washer and place the suction tube in the sand Always wear protect
13. llenberg Bellenberg 18 04 2005 16 T Accessories model variants
14. ore be held firmly in both hands Do not use the cleaner when other people without protective clothing are in the working area Check that cleaning will not result in dangerous substances e g asbestos oil being washed off the object to be cleaned and harming the environment Do not clean delicate parts made of rubber fabric etc with the 0 jet Keep some distance between high pressure nozzle and surface in order to prevent the surface from damage Do not use the high pressure hose for lifting loads NOTE The maximum permissible work ing pressure and temperature are printed on the high pressure hose Do not use the cleaner if the power cord or high pressure hose is damaged Ensure adequate air circulation Do not cover the cleaner or oper ate it in inadequately ventilated rooms Store the cleaner where A it will not be exposed to frost Never operate the cleaner with out water Even brief shortages of water result in severe damage to the pump seals Operation Keep cabinet and service door closed during operation Connect the machine directly to a plug socket Do not use exten sion cords Do not damage the power cord e g by driving over it pulling or crushing it Disconnect the power cord by grasping the plug only do not pull or tug the power cord Electrical equipment CAUTION Never spray electrical equip ment with water risk of elect trical shock and short circuit
15. pray gun Replace high pressure hose retighten screw fittings Fill detergent tank or set detergent meter ing to OFF Clean filter see chapter 7 2 1 Repair leaks LLH No water in the boiler Check water inlet LLP Water supply turned off or inadequate supply to machine Required volume flow and pressure see chapter 9 3 Technical Data POL Pump oil low Fill to proper level see chapter 7 2 2 SIC S2C 510 S20 Temperature sensor damaged Contact Nilfisk Alto Service Cold water operation possible UPC Microprocessor failure E Contact Nilfisk Alto Service 14 1 Accessories model variants 8 2 Indication lights on control panel Indication light Cause Remedy flashing gt see LL N see LL flashing gt Boiler operating N Normal operation Des on temperature gt Water has reached preselected e Normal operation flashing 20 hours gt Service interval Service due in E Contact Nilfisk Alto Service ON gt Service interval expired E Contact Nilfisk Alto Service wm ON gt Pump oil low N Fill to proper level 8 3 Other Faults Fault Cause Remedy not ON Power cord not properly connected to power supply Check power cord connetction Check fuse see chapter 9 3 Technical Data Pressure too low High pressure nozzle worn out Dete
16. r condition Regularly check whether the power cord is damaged or shows signs of ageing Use the high pressure cleaner only when the power cord is in a safe condition risk of electric shock using damaged cord Check the rated voltage of the high pressure cleaner before connecting it to the mains power supply Ensure that the voltage shown on the rating plate cor responds to the voltage of the power supply We strongly recommend that the power supply to the high pres sure cleaner be connected via a residual current circuit breaker This device stops the supply of electricity if the leakage current to the ground exceeds 30 mA for 30 ms or it has an ground tester circuit Please observe the regulations and provisions applicable in your area Before putting the high pressure cleaner into service carry out a visual check of all the major components CAUTION High pressure water jets can be dangerous if misused The T Accessories model variants jet must not be directed at persons animals live electri cal equipment or the cleaner itself Wear appropriate protective clothing and eye protection Do not direct the jet towards yourself or towards other per sons in order to clean clothes or footwear During operation of the cleaner recoil forces are produced at the gunvalve and spray lance and when the spray lance is held at an angle a torque is also created The gunvalve and spray lance must theref
17. rgent tank empty Replace nozzle Fill detergent tank or set detergent metering to OFF Machine is running with pulsating pressure and makes knocking noise Pump has drawn in air due to detergent tank being empty Close detergent valve Remove lance from gun Operate spray gun and let machine run until air in pump is gone and the machine is running normally calm again No detergents drawn in Detergent tank empty Dirt in detergent tank Suction valve at cleaning agent inlet soiled Fill detergent tank Clean detergent tank Remove suction valve and clean or replace 9 Further information 9 1 Recycling the cleaner Make the old cleaner unusable immediately 1 Unplug the cleaner and cut the power cord Do not discard of electrical ap pliances with household waste As specified in European Direc tive 2002 96 EC on old electrical and electronic appliances used electrical goods must be col lected separately and recycled ecologically Contact your local authorities or your nearest dealer for further information 1 Accessories model variants 15 NEPTUNE E english NEPTUNE E english 9 2 Guarantee 9 3 Technical data Our general conditions of busi ness are applicable with regard to the guarantee Subject to change as a result of technical advances The guarantee is invalidated if the machine is not operated in ac cordance with these instructions or othe
18. rwise abused The guaran tee is invalidated if the machine is not serviced as described NEPTUNE E 12 E24 Voltage 400V 3 50Hz EU EU Fuse slow A 25 50 Power rating kW 16 28 Heating kW 12 24 Working pressure bar MPa 150 15 Permissible pressure bar MPa 250 25 Volume flow max Uh 750 Volume flow Qe Uh 720 Permissible temperature C 80 Max water inlet temperature C 70 Max water inlet pressure bar MPa 10 1 Dimensions x w x h mm 1150 x 702 x 987 Weight kg 131 5 134 5 Noise level at a distance of 1 m EN dB A 70 4 60704 1 Sound power level LW dB A 85 4 Vibration m s lt 2 5 Recoil forces N 36 Boiler 74 Detergent tank A B 35 10 Oil quantity 1 0 Oil type SAE 15W 40 9 4 EU Declaration of Conformity C EU Declaration of Conformity Product Type Description The design of the unit corresponds to the following pertinent regulations Applied harmonised standards Applied national standards and technical specifications 2 i a e E Dipl Ing Wolfgang Nieuwkamp Tests and approvals High Pressure Cleaner NEPTUNE E 400 V 3 50 Hz IP X5 EC Machine Directive 98 37 EC EC Low voltage Directive 73 23 EC EC EMC Directive 2004 108 EC EN 12100 1 EN 12100 2 EN 60335 2 79 EN 55014 1 EN 55014 2 EN 61000 3 2 DIN EN 60335 2 79 ALTO Deutschland GmbH Guido Oberdorfer StraBe 2 8 D 89287 Be
19. s to be determined by 1 Turn the main switch to posi tion Control electronics accomplishes a self check The Display shows for approx 1 second The motor starts is ON Cold water operation 2 Turn temperture selector switch A fully anticlockwise 3 Turn the main switch B to position a Hot water operation 2 Turn temperature selector switch A to desired water temperature The indication lamp blinks during water is heated If water has reached the preselected temperature the indication lamp D lights 3 Turn the main switch B to position a 4 Unlock the spray gun and squeeze trigger 5 Lock the spray gun even dur ing short working pauses 1 Select desired detergent A or B and amount by turning the knob to desired percent age 2 Spray the object to be cleaned 3 Allow the cleaning agent to work depending on the de gree of soiling Then rinse off with high pressure using a graduated measuring con tainer For water outlet volume of the machine see chapter 9 3 techni cal data 1 Accessories model variants NEPTUNE E english NEPTUNE E english 5 Applications and methods 5 1 Techniques 5 1 1 Soaking 5 1 2 Detergent and Foam 5 1 3 Temperature 5 1 4 Mechanical Effect 5 1 5 High Water Flow or High Pressure Efficient high pressure cleaning is achieved by following a few guide lines combined with your own personal experience o
20. ssembly 3 2 Set the brake 3 3 Fill up detergent tanks 3 4 Connecting the high pressure hose 1 The safest way to lift the ma chine is to use a fork lift truck The arrows in the illustration indicate the best places to po sition the fork It is also possible to lift the machine by hand from the pal let Due to the weight this work should be done by at least three persons CAUTION Do not hold the plastic tank to lift the machine as it could become detached from the frame The best places to hold the ma chine are onthe handle onthe frame between the front wheels and the guide rollers 1 Before using the cleaner for the first time check it carefully for any faults or damage 2 Run the machine only when it is in perfect working condi tion 3 Set the brake 1 Fill up detergent tanks A and B with prediluted de tergent Capacity see chapter 9 3 Technical Data 1 Connect the high pressure hose quick connector to the high pressure nipple 1 Accessories model variants NEPTUNE E english 3 5 Connecting the water supply I NOTE See chapter 9 3 Technical Data for required quantity of water and water pressure In the case of poor water quality sand etc it is recommended that an inlet water filter be installed 3 6 Electrical connection 3 7 Antifreeze before first use 4 1 Connecting the spray l
21. tructions This high pressure cleaner has been designed for professional use in Agriculture Industry Transport industry Automotive Municipal Facilities Janitorial Construction Food Industry 1 Spray lance 2 Spray lance storage 3 Control panel 4 Detergent level gauge 5 Tank filler for detergent A 6 Top cover release 7 Service door release 8 High pressure hose con nection 9 Main switch ON OFF 10 Display Temperature or Codes 11 Temperature control Level monitoring in the boiler If the water level in the boiler sinks under a certain level the equipment is switched off The boiler is protected against over heating The pump is protected against water shortage The safety devices are set and sealed at the factory and must not be adjusted Chapter 5 describes the use of the high pressure cleaner for various cleaning jobs Always use the cleaner as described in these operating instructions Any other use may damage the cleaner or the sur face to be cleaned or may result in severe injury to persons 12 Boiler heating operating 12 Working temperature reached 14 Service interval due expired 15 Pump oil low 16 Detergent metering knob 17 Pressure gauge 18 Power ON 19 Castor with parking brake 20 Water supply connection 21 Canister for detergent B 22 Grip for top cover T Accessories model variants 3 Before starting the cleaner 3 1 Transport and a
22. ts to prevent large particles of dirt from entering into the system l 2 Unscrew quick coupling Remove filter with tool and clean it Also clean filter at pump in let Check color of pump oil If the oil has a grey or white shade change the oil see chapter 7 2 3 Top off oil level with fresh oil if necessary Oil type see chapter 9 3 Technical Data 1 Accessories model variants 13 NEPTUNE E english NEPTUNE E english 7 2 3 Changing the pump oil 1 Unscrew the oil drain plug A and drain oil into a suitable container 2 Check that the drain plug gasket is in place and reinstall drain plug 3 Fill pump with proper grade and amount of oil Oil grade and capacity see chapter 9 3 Technical Data 8 Troubleshooting 8 1 Indications on Display Anzeige am Display Ursache Behebung HOP Motor overheated Turn main switch in position OFF let ma chine cool down Possible phase failure have electrical con nections checked HOS Boiler overheated Let appliance cool down if the failure comes up repeatedly contact Nilfisk Alto Service cold water operation possible LEA Leakage Spray gun leaking High pressure hose coupling or line system leaking Detergent tank empty Water inlet filter dirty High pressure pump drawing in air Turn main switch to position OFF then start again Repair S
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