Kärcher TRAILER 3500E HDS 4.7/35 Operator's Manual page 23

Problem
Pump sucking air
PUMP RUNNING
Valves sticking
NORMALLY BUT
PRESSURE LOW
Nozzle incorrectly sized
ON INSTALLATION
Unloader valve seat faulty
Worn piston packing
Fuel pump seized
Burner fan loose or misaligned
BURNER MOTOR
Defective control switch
WILL NOT RUN
Loose wire
Defective burner motor
RELIEF VALVE
Relief valve defective
LEAKS WATER
Karcher Trailer 3500E HDS 4.7/35 Operator's Manual 9.808-363.0 - B
Possible Cause Solution
Check water supply and possibility of air
seepage.
Check and clean or replace if necessary.
Check and replace if necessary (See serial
plate for proper size).
Check and replace if necessary.
Check and replace if necessary.
Replace fuel pump.
Position correctly, tighten set screw.
Replace switch.
Check and replace or tighten wiring.
Replace motor.
Replace or repair
Maintenance
23