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English
Defective Pattern Likely cause Suggested Remedy
A.
Dried material is
clogging side-port “A”
and causing
side-port “B” to blow
spray towards the
clogged side
Soak side-ports in
thinner to clean clog.
DO NOT poke any
opening with hard objects.
B.
1. Dried material at
fluid nozzle “C”
restricts air flow
2. Loose air nozzle
3. Air pressure
set too high
1. Remove air nozzle.
Wipe off fluid tip using a
cloth soaked in thinner
or by soft brush
2. Fasten nozzle securely
3. Reduce air pressure
Defective Pattern Likely cause Suggested Remedy
Inadequate
air delivery
1. Air needle partially
closed
2. Dried material in air
jets or air cap
3. Obstruction in air line
1. Open control knob
2. Clean
3. Remove obstruction
Excessive fog 1. Air pressure too high
for viscosity of fluid
1. Reduce air pressure and/or
open fluid control knob
Material leaking
from fluid inlet
of cup.
1. Loose cup or
foreign substances
on/ between cup
thread and fluid inlet
1. Tighten and clean
or replace it
Material leaking
from nozzle when
trigger is released
1. Worn fluid needle
2. Dried material in tip
of nozzle
3. Loose packing nut
1. Replace
2. Clean
3. Tighten needle
packing nut by turning
counterclockwise
TROUBLESHOOTING GUIDE
This section provides a list of the more frequently encountered malfunctions, their cause and corrective actions. The operator or maintenance personnel can
perform some corrective actions, and others may require the assistance of a qualified DeWALT technician or your dealer.
A
B
C
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