MSG AQUAPRO-WC Serie Manuel De L'utilisateur page 56

Trouble shooting guide
FAULT
PUMP
Noisy pump.
Presence of water in oil (white oil).
Oil dripping under the pump.
Water dripping between pump head
and crankcase.
FAULT
PRESSURE REGULATOR
The regulator engages and releases
when the gun trigger is released.
CAUSE
Bearings are worn.
Pump is sucking air.
Water supply is insuffi cient.
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-ventilated
cap.
Pump water seals are worn.
CAUSE
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.
56/98
REMEDY
Replace.
Check the supply piping.
Check the supply fl ow.
Lower the inlet water temperature.
Replace.
Replace.
Increase the oil change frequency.
Never direct the jet toward the
machine.
Replace.
Replace.
Replace.
Clean.
Put the origin parts back.
Remplacer.
REMEDY
Adjust, repair or replace the gun.
Stop the leaks.
Replace the defective parts.
Replace the defective parts.
Replace the defective parts.