Landa EHW4-2000C Operator's Manual

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Landa EHW4-2000C Operator's Manual Manual pdf 13 page image

8.941-114.0 • LANDA EHW • Rev. 08/1213PRESSURE WASHER Troubleshooting GuideTROUBLESHOOTINGPROBLEM POSSIBLE CAUSE SOLUTIONLOW OPERATINGPRESSURE Faulty pressure gauge Install new gauge.Insufficient water supply Use larger garden hose; clean filterwasher at water inlet.Old, worn or incorrect spray nozzle Match nozzle number to machineand/or replace with new nozzle.Plumbing or hose leak Check plumbing system for leaks.Retape leaks with teflon tape.Faulty or misadjusted unloader valve(where applicable)Adjust unloader for proper pressure.Install repair kit when needed.Worn packing in pump Install new packing kit.Fouled or dirty inlet or dischargevalves in pump Clean inlet and discharge valves.Worn inlet or discharge valves Replace with valve kit.Leaking pressure control valve(where applicable) Rebuild or replace as needed.FLUCTUATINGPRESSUREValves worn Check and replace if necessary.Blockage in valve Check and clean out if necessary.Pump sucking air Check water supply and suction linefor air seepage at joints.Worn piston packing Check and replace if necessary.PRESSURE LOWAFTER PERIODOF NORMAL USENozzle worn Check and replace if necessary.Inlet or discharge valves blockedor worn Check and clean or replace if necessary.Unloader valve seat worn Check and replace if necessary.PUMP NOISY Air in suction line Check water supply connectionson suction line.Broken or weak inlet or dischargevalve springs Check and replace if necessary.Foreign matter in valves Check and clean if necessary.Worn bearings Check and replace if necessary.PRESENCE OFWATER INPUMP OILWater sprayed at machine Change oil. Direct spray away frommachine.High humidity in air Check and change oil twice as often.Piston packing worn Oil seal worn Check and replace if necessary.