Landa Platinum Series Operator's Manual page 33

PHW/PHWS SERIES PRESSURE WASHER
PROBLEM
MACHINE WILL NOT
DRAW UP CHEMICAL
BURNER MOTOR
WILL NOT RUN
EXCESSIVE
VIBRATION IN
DELIVERY LINE
TEMPERATURE
RELIEF VALVE
LEAKS WATER
(pump protector)
BURNER STAYS ON
WHEN SPRAY GUN
IS IN OFF POSITION
PUMP RUNNING
NORMALLY BUT
PRESSURE LOW
PUMP NOISY
TROUBLESHOOTING
POSSIBLE CAUSE
Clamps holding chemical lines
are loose
Hole in chemical line(s)
Strainer basket plugged
Overload protector tripped
Fuel pump seized
Burner fan loose or misaligned
Defective control switch
Loose wire
Defective burner motor
Irregular functioning of check
valves, metering valves
Spray gun in OFF position with
machine operating for an
extended period of time
Relief valve defective
Particle next to poppet
Fuel pump pressure too high
Pressure switch defective
Fuel solenoid defective
Pump sucking air
Valves sticking
Unloader valve seat faulty
Nozzle incorrectly sized
Worn piston packing
Air in suction line
Broken or weak inlet or discharge
valve springs
Excessive temperature of liquid
Foreign matter in valves
Worn bearings
OPERATOR'S MANUAL 33
SOLUTION
Tighten clamps.
Repair hole.
Remove and clean.
Push reset button.
Replace fuel pump.
Position correctly and tighten set screw.
Replace switch.
Check and replace or tighten wiring.
Replace motor.
Check and replace if necessary.
Open spray gun to cool circulating water.
Replace valve.
Remove internal parts and clean.
Call technical support.
Check for proper operation, replace if necessary.
Replace fuel solenoid.
Check water supply and possibility of air seepage.
Check and clean or replace if necessary.
Check and replace if necessary.
See serial plate for minimum nozzle size.
Check and replace if necessary.
Check water supply and connections on suction line.
Check and replace if necessary.
Reduce to below 60° C (140° F).
Check and clean if necessary.
Check and replace if necessary.