English 17Î Oil change.NoteSee "Technical Details" for details of oilquantity and type.Î Turn out the oil drain screw at the fronton the motor casing.Î Drain the oil in a collection basin.Î Turn out the oil drain screw.Î Fill in new oil slowly; air bubbles shouldgo out.Î Attach the lid of the oil container.Î Fasten the device hood. DangerFirst pull out the plug from the mains beforecarrying out any tasks on the machine.Get the electrical components checked andrepaired only by authorised customer serv-ice persons.Contact an authorised customer serviceperson in case of problems not mentionedin this chapter or if you are in doubt or whenyou have been explicitly asked to do so.Î Check connection cable for damages.Î Call Customer Service in case of elec-trical defects.Î Install the high pressure nozzle.Î Clean/ replace nozzle.Î Clean the fine filter; replace it, if neces-sary.Î Deaerate the appliance (see "Start-up")Î Check water supply level (refer to tech-nical data).Î Check all inlet pipes to the pump.Î Contact Customer Service if needed.3 drops per minute are permitted and cancome out from the lower side of the appli-ance. Call Customer Service if there isheavy leakage.Î With stronger leak, have devicechecked by customer service.Î Check suction pipes for water and de-tergent and ensure that they are leak-proof.Î Deaerate the appliance (see "Start-up")Î Clean the fine filter.Î Contact Customer Service if needed.monthly or after 500 operatinghoursOil changeTroubleshootingAppliance is not runningPressure does not build up in theappliancePump leakyPump is vibratingDetergent is not getting sucked in