Landa Pgdc4-3500 - Troubleshooting

LANDA PGDC • 8.916-596.0 • REV. 5/13
PRESSURE WASHER Troubleshooting Guide
14
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
OIL DRIPPING
Oil seal worn Check and replace if necessary.
EXCESSIVE
VIBRATION
IN DELIVERY LINE
Irregular functioning of the valves Check and replace if necessary.
DETERGENT
NOT DRAWING
FROM SOURCE
Air leak Tighten all clamps. Check detergent
lines for holes.
Restrictor in float tank is missing Replace restricter. Check for proper
orifice in restrictor.
Filter screen on detergent suction
hose plugged
Clean or replace.
Dried up detergent plugging
metering valve
Disassemble and clean thoroughly
High viscosity of detergent Dilute detergent to specifications.
Hole in detergent line(s) Repair hole.
Low detergent level Add detergent, if needed.
PUMP RUNNING
NORMALLY
BUT PRESSURE
LOW ON
INSTALLATION
Pump sucking air Check water supply and
possibility of air seepage.
Valves sticking Check and clean or replace if
necessary.
Nozzle incorrectly sized Check and replace if necessary
(See serial plate for proper size).
Unloader valve seat faulty Check and replace if necessary.
Worn piston packing Check and replace if necessary.
BURNER
MOTOR
WILL NOT RUN
Fuel pump seized Replace fuel pump.
Burner fan loose or misaligned Position correctly, tighten set screw.
Defective control switch Replace switch.
Loose wire Check and replace or tighten wiring.
Defective burner motor Replace motor.
RELIEF VALVE
LEAKS WATER
Relief valve defective Replace or repair.