Karcher Shark HDS 4.0/20 E Ec Service Manual
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9.800-966.0-R • KÄRCHER HDS Service Manual21PRESSURE WASHER Troubleshooting GuideTROUBLESHOOTINGPROBLEM POSSIBLE CAUSE SOLUTIONOIL SQUIRTSOUT OF OILCAP ON PUMPPump overfilled with oil Maintain oil level at red dot onsight glass at rear of pump orat top of notch on dipstick(where applicable).WATERDRIPPINGFROMUNDER PUMPPiston packing worn Check and replace if necessary.O-Ring plunger retainer worn Check and replace if necessary.Cracked piston Check and replace if necessary.OILDRIPPINGOil seal worn Check and replace if necessary.EXCESSIVEVIBRATIONIN DELIVERY LINEIrregular functioningof the valvesCheck and replace if necessary.SYSTEMWILL NOTSTARTPower, water, auto switch not on Check and turn on.Motor overload tripped Check and reset.Control fuse blown (2 or 3 amp) Check and replace.Pressure switch faulty Check, clean or replace.Timer faulty Check and replace.SYSTEMWILL NOTSTOPWater leak in discharge line Repair water leak.Pressure switch faulty Disconnect at timer. If unit stops,replace pressure switch.Timer resistor faulty Replace timer.SYSTEM STOPSAFTER APPROXIMATELY10 SECONDS ANDTHEN RESTARTSFaulty pressure switch Check and replace.Leak in system Fix leak.WATER ISNOT HOTTank water low Check for leaks and fill.Temperature or level controlsfaultyCheck and replace.MOTOR ”HUMS”BUT DOESNOT TURNElectric motor single phasing Check for blown fuse or loosepower line connections.PUMP RUNNINGNORMALLY BUTLOW WATERPRESSUREAir leak in inlet Check water supply and possibilityof air entering water connections.Faulty pressure unloader Bypass pressure unloader bywiring spray gun open. If goodPSI, turn machine off and replaceregulator. DO NOT RELEASESPRAY GUN WHILE BYPASSINGUNLOADER. |
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