Problem
|
Cause
|
Solution
|
| Orange
Peel. |
1. Material
drying too fast. |
Slower
solvent. |
|
2. Gun
too far from surface. |
Move
gun closer to surface. |
|
3. Material
too thick. |
Thin
material per thinning instructions. |
| Runs and
sags. |
1. Material
too thin. |
Add
material. |
|
2. Moving
gun too slow. |
2.
Speed up gun movement. |
|
3. Too
much material flow. |
Turn
material knob counter-clockwise
to reduce flow. |
|
4. Spray
gun too close to surface. |
Hold
gun 8" - 10" from surface. |
| Pin-holing
and solvent pops. |
1. Trapped
solvents. |
Apply
material in lighter coats
allowing solvents time to
evaporate. |
|
2. Pigment
settling. |
Possible
bad material. |
|
3. System
contamination. |
Thoroughly
clean all parts. |
| Fish eyes. |
1. Possible
silicone contamination. |
Use
solvent to clean all parts. |
| Blistering. |
1. Moisture
in/on surface. |
Dry
surface. |
|
2. Incompatible
top coats or undercoats. |
Make
sure coatings are compatible. |
| Lumpy,
coarse surface. |
1. Dirt
on surface. |
Thoroughly
clean surface. |
| Mottled
surface finish. |
1. Too
much thinner. |
Reduce
thinner. |
|
2. Poor
spray technique. |
Follow spraying
instructions in the
owners manual |
| No material
flow. |
1. Clogged
nozzle/air cap. |
Disassemble
and clean. |
|
2. Clogged
cup pressure tube. |
Disassemble
and clean. |
|
3. Clogged
gun. |
Disassemble
and clean. |
|
4. Clogged
material hose. |
Disassemble
and clean. |
|
5. Poor
cup seal. |
Inspect
seal in cup cap and clean
or replace as necessary. |
|
6. Excess
particles in paint. |
Strain
paint. |
| Slow material
flow. |
1. Material
too thick. |
Clear
material hose of thick material
and thin material per thinning
instructions. |
|
2. Improper
material adjustment. |
Turn
material adjustment knob
until desired flow is achieved. |
| |
|
4. Poor
air flow through filter. |
Remove
and clean or replace filter. |
|
5. Excess
particles in paint. |
Strain
paint with filter. |
| Material
leak. |
1.Damage
to cup or gun. |
Check
cup or gun and replace damage
parts. |
|
2. Loose
packing. |
Tighten
packing per instructions. |
|
3. Worn
or damaged packing. |
Remove
and replace. |
|
4. Worn
or damaged cup seal. |
Remove
and replace. |
|
5. Loose
cup fittings. |
Tighten. |
|
6. Loose
nozzle. |
Tighten. |
|
7. Wrong
needle/ nozzle assembly. |
Refer
to material application
chart for correct combination. |
|
8. Damaged
needle. |
Replace. |
|
9. Loose
material adjuster. |
Turn
clockwise until needle seals
in nozzle. |
| Pulsating
spray. |
1. Check
cup seal. |
Disassemble
and clean. |
|
2. Check
packing. |
Tighten
per instructions. |
|
3. Loose
fitting on cup or gun. |
Tighten. |
|
4. Loose
air cap retainer ring. |
Tighten. |
|
5. Loose
nozzle. |
Tighten. |
|
6. Damaged
air flow ring. |
Replace. |
|
7. Excess
particles in paint. |
Strain
paint. |
| Excessive
overspray. |
1. Material
too thin. |
Thicken
by adding paint. |
|
2. Too
much air flow. |
Adjust
air flow. |
|
3. Wrong
needle/nozzle. |
See
material chart. |
|
4. Gun
held too far from surface. |
Move
8" - 10" from surface. |
|
5. Wind. |
Do
not use in windy conditions. |
|
6. Too
much material. |
Turn
material knob counter-clockwise
to reduce flow. |
|
7. Excess
particles in paint. |
Strain
paint. |
| Spitting. |
1. Material
too thick. |
Thin
per recommendations. |
|
2. Wrong
needle/nozzle. |
See
material chart. |
|
3. Coup
not sealing. |
Tighten
or replace seal. |
|
4. Packing
loose. |
Tighten
or replace seal. |
|
5. Excessive
particles in paint. |
Strain
paint. |
| Poor pattern. |
1. Build-up
on nozzle. |
Clean
nozzle and air cap. |
|
2. Wrong
needle/nozzle. |
Replace. |
|
3. Clogged
air cap. |
Clean. |
|
4. Excessive
particles in paint. |
Strain
paint. |
| Overheating. |
1. Clogged
filter. |
Replace. |
| Poor air
flow. |
1. Clogged
filter. |
Replace. |
|
2. Hose
kinked. |
Move
so that kinking does not
occur. |
|
3. Air
flow control out of adjustment. |
Adjust
air flow. |
| Spray not
uniform (spitting). |
1. Material
too thick. |
Check
material viscosity (Thin
per instructions). |
|
2. Wrong
needle/nozzle assembly. |
Change
to proper needle/nozzle. |
|
3. Cup
seal leaking. |
Tighten
cup, replace seal or check
valve. |
|
4. Loose
packing. |
Adjust
or replace packing. |
|
5. Material
not properly mixed, or improperly
filtered. |
Strain
paint. |
| Poor pattern. |
1. Material
buildup on nozzle or air
cap. |
Clean
nozzle and air cap. |
|
2. Worn
nozzle/needle. |
Replace. |
|
3. Clogged
air cap. |
Clean. |
|
4. Material
not properly mixed, improperly
filtered. |
Strain
paint. |
| Overheating. |
1. Clogged
filter. |
Replace. |
| Poor air
flow. |
1. Clogged
filter. |
Replace
filter. |
|
2. Air
flow control improperly
adjusted. |
Adjust
air flow control. |
| Spray tip
clogs. |
1. Improper
material flow adjustment. |
Adjust
material control. |
|
2. Cup
seal leaking. |
Replace
cup seal. |
|
3. Wrong
needle/nozzle. |
Change
to proper needle/nozzle. |
| Orange
Peel. |
1. Material
drying too fast. |
Use
a slower solvent, or add
a retarding agent. |
|
2. Gun
too far from surface. |
Move
gun closer to surface. |
|
3. Material
too thick. |
Thin
material per thinning instructions. |
| Runs and
sags. |
1. Material
too thin. |
Add
material to increase thickness. |
|
2. Moving
gun too slow. |
Move
gun more quickly. |
|
3. Excessive
material flow. |
Turn
material control knob clockwise
to reduce flow. |
|
4. Gun
too close to surface. |
Move
gun further from surface. |
| Pin-holding
and solvent pops. |
1. Trapped
solvents. |
Apply
material in lighter coats
allowing solvents time to
evaporate. |
|
2. Pigment
settling. |
Possible
bad material. |
|
3. System
contamination. |
Thoroughly
clean all parts. |
|
|
|
| Fish eye. |
1. Possible
silicone contamination. |
Use
solvent to clean all parts. |
| Blistering. |
2. Moisture
in/on surface. |
Dry
surface. |
|
3. Incompatible
top coats or undercoats. |
Make
sure coatings are compatible. |
| Lumpy,
coarse surface. |
1. Dirt
on surface. |
Thoroughly
clean surface. |
| Mottled
surface finish. |
2. Too
much thinner. |
Reduce
thinner. |
|
3. Poor
spray technique. |
Refer
to "Operation" for spraying
instructions. |
| No material
flow. |
1. Clogged
nozzle/air cap. |
Disassemble
and clean. |
|
2. Clogged
cup pressure tube or fittings. |
Disassemble
and clean (a straight pin
can be used to clean fittings). |
|
3. Clogged
gun. |
Disassemble
and clean. |
|
4. Clogged
material tube. |
Disassemble
and clean gun, and check
valve. |
|
5. Cup
seal leaking. |
Inspect
cup seal, cup cap, and clean
and replace as necessary. |
|
6. Material
not properly mixed, or improperly
filtered. |
|
