The pump
doesn’t
reach the
necessary
pressure
Water inlet filter is
clogged.
Pump sucking air from
connections or hoses.
Suction/ delivery valves
are clogged or worn out.
Unloaded valve is stuck.
Lance nozzle incorrect or
worn out.
Clean the water inlet filter.
Check that all supply
connections are tight.
Check that the water
feeding hose is not leaking.
Clear or replace valves.
Loosen and re-tighten
regulation screw.
Check and/or replace.
48