6.
TROUBLE SHOOTING GUIDE
PROBLEM
The shut-off valve does not close after
releasing the trigger.
The shut-off valve does not function
when depressing the trigger.
Moving the pump handle becomes
very difficult.
The tank collapses "it shrinks".
While working there is leakage between
the cap and the tank .
While working there is some leakage
from the cylinder.
While working, the sprayer does not
generate pressure.
While pressuring the tank with the lever,
when you stop it goes up and stays there.
While working, the pressure lasts very
little time.
The sprayer builds low or no pressure.
The sprayer does not hold pressure or tank
leaks at pump connection.
Tank leaks at pump and pressure chamber
connection.
Module is leaking.
Tank leaks at hose connection.
CAUSE
The plunger O-rings are worn out or
swollen.
The nozzle are blocked.
The internal part of the cylinder are dirty,
so the piston ring can not run smoothly,
or the piston ring grew because the
material used to apply is very aggressive.
The cap gasket is not letting air through.
The cap gasket is not lubricated.
The cylinder can be worn out from the
inside or the piston rings damaged
The gaskets are dirty, dry or blocked.
The gasket that is inside the cylinder is
blocked or stayed open.
The pressure chamber is filled with water
because the gaskets are not working.
Check valve in the pump have become
stuck and/or there is an air lock in the
unit.
The O-rings and check valve need replacing,
the pressure chamber has expanded or the
check valves are clogged with debris.
The hose clamp is loose or the O-ring
is damaged.
The Sealed module pump is damaged.
Clamp is loose or damaged.
5
SOLUTION
Replace them and lubricate the plunger
with the new O-rings.
Clean the nozzle.
Open the cylinder according to the method
mentioned in point 5.1 to check if its dirty and
clean, compare the piston ring to a new one
to see if it grew, if it did change immediately.
Clean the gasket and lubricate, also clean
the cap and assembly again.
Lubricate or replace according to the
diagnosis.
Replace.
Replace.
Inspect the cylinder, clean, adjust and put
back in place.
Take the water out of the sprayer and
replace the gaskets.
Release pressure by keeping flow control open
and pumping several times. Disassemble and
force seals open by hand if step one does not
work.
Replace O-rings and seals, replace pressure
chamber if there is no improvement, lubricate
and reassemble.
Tighten the hose clamp, use part No. E501-021 to
replace the O-ring.
Replace module with part No. E505-155-C.
Replace clamp.