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308-34117
Troubleshooting
PROBLEM CAUSE SOLUTION
Fluid
flow is fluttering while
spraying
1.
Fluid nozzle is not tight enough
2.
Fluid filter is clogged
3.
Fluid adjustment knob is not
properly set
4. Baffle (item 11) is installed wrong or
damaged
1. See page 8 to install the fluid nozzle
correctly
2. Check
the fluid filter
3. Adjust the fluid adjustment knob for
less feathering or use a larger size
nozzle
4. Check
if the baf
fle protrusion is proper
-
ly
inserted into the gun insert hole,
see
page 19; replace
the
baf
fle if damaged
Fluid
flow fades while spraying
high viscosity fluids
1. Air
hose size is too
restricted for higher
air flows
2.
Fluid pressure is too low
1. Use
larger 3/8 in. ID air hose; order part
no.
185–353
2. Raise
the fluid supply pressure or
use
a
smaller fluid nozzle
Pattern becomes of
f-set or heavy
on ends
1.
Fluid nozzle is too tight
2.
Air cap is too tight
3.
Air cap horn holes are plugged
1. See page 8 to install the fluid nozzle
correctly; replace the nozzle if
damaged
2. Loosen
the air cap retaining ring
3. Clean the air cap horn holes with a
non-metallic
item, such as a toothpick
Fluid
system will not operate at low
enough fluid pressure [below
10 psi (0.7 bar)]
There is no fluid regulator
, or the air regu
-
lator on the pressure pot is not sensitive
enough at low pressures
Add a low pressure fluid regulator on the
fluid line or add a more sensitive air regu
-
lator on the pressure pot.
Adhesive residue forms on spray
nozzle
1. Activator
is dispensing
in the atomizing
air
2. Activator
valve is leaking or not seating
properly
3. Baffle
(item 1
1)
is leaking at baf
fle pro
-
trusion
4. Baffle
is leaking at nozzle seal
5. Air cap taper is not sealing to nozzle
taper
1. Do
not trigger the gun with the activator
on
and atomizing air of
f
2. Clean
the needle,
seat, and packings;
lubricate
packings and re-assemble
3. Clean
and re-assemble
the baf
fle with
a
small amount of
PTFE
r
pipe sealant
on the baffle protrusion or replace
the
baffle.
Make sure that the baf
fle protru
-
sion is properly inserted into the gun
insert
hole, see page 19
4. Clean the baffle and replace the
nozzle
seal
5.
Clean and re-tighten the air cap
Adhesive collecting in air passages
The adhesive nozzle’
s internal seal is
leaking
Clean the nozzle and seat; see page 8
to install the fluid nozzle correctly
When the gun is triggered, the
adhesive dispenses before the ac
-
tivator or the activator dispenses
before the adhesive
Activator needle hex nuts are not tight Adjust the activator needle hex nuts until
the adhesive and activator needles open
together