Landa PHW4-2000 - Start-Up, Fuel, and Detergent Problems

30 PHW SERIES PRESSURE WASHER OPERATOR’S MANUAL
LANDA PHW • 9/02
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
MACHINE WILL NOT
DRAW UP
DETERGENT
Clamps holding detergent lines
are loose
Tighten clamps.
Hole in detergent line(s) Repair hole.
Strainer basket plugged Remove and clean.
BURNER MOTOR
WILL NOT RUN
Overload protector tripped Push reset button.
Fuel pump seized Replace fuel pump.
Burner fan loose or misaligned Position correctly and tighten set screw.
Defective control switch Replace switch.
Loose wire Check and replace or tighten wiring.
Defective burner motor Replace motor.
EXCESSIVE
VIBRATION IN
DELIVERY LINE
Irregular functioning of check
valves, metering valves
Check and replace if necessary.
TEMPERATURE
RELIEF VALVE
LEAKS WATER
(pump protector)
Spray gun in OFF position with
machine operating for an
extended period of time
Open spray gun to cool circulating water.
Relief valve defective Replace valve.
Particle next to poppet Remove internal parts and clean.
BURNER STAYS ON
WHEN SPRAY GUN
IS IN OFF POSITION
Fuel pump pressure too high Call technical support.
Pressure switch defective Check for proper operation, replace if necessary.
Fuel solenoid defective Replace fuel solenoid.
PUMP RUNNING
NORMALLY BUT
PRESSURE LOW
Pump sucking air Check water supply and possibility of air seepage.
Valves sticking Check and clean or replace if necessary.
Unloader valve seat faulty Check and replace if necessary.
Nozzle incorrectly sized See serial plate for minimum nozzle size.
Worn piston packing Check and replace if necessary.
PUMP NOISY
Air in suction line Check water supply and connections on suction line.
Broken or weak inlet or discharge
valve springs
Check and replace if necessary.
Excessive temperature of liquid Reduce to below 60° C (140° F).
Foreign matter in valves Check and clean if necessary.
Worn bearings Check and replace if necessary.