MSG AQUAPRO Serie Manuel De L'utilisateur page 55

Trouble shooting guide
FAULT
PUMP
The engine runs but the pump does not
work.
The pump runs but does not give maxi-
mum pressure.
Fluctuating pressure.
Excessive vibration in delivery hose
and gun.
C120-0065
CAUSE
The pump valves are jammed by dirt
The O'rings of the valves are damaged.
The pump key is broken
The nozzle is worn or has not the
proper size.
The reading of the gauge is wrong.
The soap nozzle or weed killing tool is
installed.
Leaks in the high pressure line.
The seat or the valve of the pressure
regulator are dirty or worn.
The pump valves are worn or dirty.
Pump water seals are worn.
Pump is sucking air.
Water supply is insuffi cient.
Valves are worn or dirty.
Water seals are worn.
Pump is sucking air.
Water supply is insuffi cient.
Pump valves are dirty or worn.
Pump water seals are worn.
A connecting rod is broken
55
REMEDY
Clean the valves. Check or add a fi lter
at the pump inlet.
Replace.
Replace.
Check for the recommended size or
replace.
Replace the gauge.
Replace with a high pressure nozzle.
Stop the leaks.
Check, clean or replace the defective
parts.
Clean or replace.
Replace.
Check the supply pipping.
Check if supply fl ow provides the
pump's needs.
Clean or replace.
Replace.
Check the supply piping.
Check if supply fl ow provides the
pump's needs.
Clean or replace.
Replace.
Replace.