21
Trouble shooting guide
FAULT
CAUSE
REMEDY
The regulator engages and
releases when the gun trigger is
released.
The gun does not properly
close.
Leaks on the high pressure line.
The regulator check valve does
not properly close.
The regulator piston seal kit is
worn.
The regulator guide seal kit is
worn.
Adjust, repair or replace the
gun.
Stop the leaks.
Replace the defective parts.
Replace the defective parts.
Replace the defective parts.
PRESSURE REGULATOR
FAULT
CAUSE
REMEDY
Noisy pump.
Presence of water in oil
(white oil).
Oil dripping under the pump.
Water dripping between pump
head and crankcase.
Bearings are worn.
Pump is sucking air.
Water supply is insufficient.
Inlet water temperature is too
high.
The pump key is worn.
Pump water seals are worn.
High humidity in the air.
Cleaning of the pump with the
nozzle.
Crankshaft oil seal broken or
worn.
Piston guide scratched or worn.
Piston guide oil seal broken or
worn.
Air vent jammed.
Air vent replaced by a non-ven-
tilated cap.
Pump water seals are worn.
Replace.
Check the supply piping.
Check the supply flow.
Lower the inlet water tempera-
ture.
Replace.
Replace.
Increase the oil change
frequency.
Never direct the jet toward the
machine.
Replace.
Replace.
Replace.
Clean.
Put the origin parts back.
Replace.
PUMP
