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