Spray Pattern Diagnosis - Storch PowerCoat FF Handbuch

Spray pattern diagnosis

Problem
The spray pattern pulses.
The spray pattern is stripy.
There are drips in the spray
pattern.
The spray pattern is too nar-
row.
The spray pattern is too wide. The spray gun is too near to the target sur-
"Spatter" at the start or end of
the spray pattern.
Cause
The user is moving too quickly during spra-
ying.
The Hi/Lo switch is in the lo position.
The nozzle or nozzle filter is clogged.
The pressure controller setting is too low.
Wrong nozzle for the material.
The material is not compatible with the
spray gun.
Intake or discharge valve is worn out.
You are moving the spray gun too slowly.
The spray gun is too close to the target sur-
face.
You are holding the trigger while changing
the spraying direction.
The nozzle is too large.
The pressure controller setting is too high,
or the Hi/Lo switch is in the Hi position.
The nozzle is closed or damaged.
The spray gun is too close to the target sur-
face.
Wrong nozzle for applying the material.
The nozzle is closed or damaged.
face.
Wrong nozzle for applying the material.
Excess material has built up in the rear area
of the nozzle.
The nozzle filter is clogged or damaged.
The nozzle holder is not fully screwed onto
the spray gun.
The seat is worn out.
Remedy
Slow down the movement.
Set the Hi/Lo switch to Hi.
Remove the nozzle clogging or clean the
nozzle filter; see page 136.
Set the pressure regulator to a higher
pressure.
See the selection table on page 133.
Change the material.
See Repairing the intake valve and
Removing/Repairing the intake valve on
page 143 - 145.
Move the spray gun faster during spra-
ying.
Keep the spray gun at a distance of 55
cm from the surface.
Release the trigger when changing the
spraying direction.
See the nozzle selection table on page
133.
Set a lower pressure at the controller, or
set the Hi/Lo switch to Lo.
Replace the nozzle; see page 134.
Keep the spray gun at a distance of 145
cm from the surface.
See the nozzle selection table on page
133.
Replace the nozzle; see page 134.
Hold the spray gun closer to the surface.
See the nozzle selection table on page
133.
See cleaning the device on page 136.
Clean or replace the filter; see page 136.
See Installing the nozzle holder on page
134.
Replace the spray nozzle.
148