20
Trouble shooting guide
FAULT
CAUSE
REMEDY
The motor runs but the pump
does not work.
The pump runs, but does not
give maximum pressure.
Fluctuating pressure.
Excessive vibration in delivery
hose
and gun.
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 soap nozzle is installed.
Leaks in the high pressure line.
The seat or the valve of the
washing regulator are dirty or
worn.
The pump valves are worn or
dirty.
Pump water seals are worn.
Pump is sucking air.
Water supply is insufficient.
Valves are worn or dirty.
Water seals are worn.
Pump is sucking air.
Water supply is insufficient.
Pump valves are dirty or worn.
Pump water seals are worn.
A connecting rod is broken.
Clean the valves. Check or add
a filter at the pump inlet.
Replace.
Replace.
Check for the recommended
size or replace.
Replace with a high pressure
nozzle.
Stop the leaks.
Check, clean or replace the
defective parts.
Clean or replace.
Replace.
Check the supply piping.
Check if supply flow provides
the pump’s needs.
Clean or replace.
Replace.
Check the supply piping.
Check if supply flow provides
the pump’s needs.
Clean or replace.
Replace.
Replace.
PUMP