General Problem
Possible Cause
Solution
Excessive Surging
Persistent Nozzle
Clogging
Paint Leaks
Through Center
of Nozzle
(Failure to Shut Off)
Paint Leaks Around
the Nozzle Cap
Paint Leaks At Rear
of Barrel
Orange Peel or
Rough Finish
Paint Runs or Has
Poor Hiding
Qualities
1. Restriction in pump air line
2. Insufficient pump capacity
3. Clogged paint filter
4. Low air volume capacity
5. Nozzle too large
1. Paint allowed to dry in
nozzle or line
2. Paint applicator filter too
coarse or damaged
3. Paint pigments too coarse
1. Loose nozzle cap
2. Improper trigger adjustment
3. Defective or dirty valve seat
1. Loose nozzle cap
2. Fluid seal worn
1. Loose packing nut
1. Evaporation rate too fast
2. Poor atomization
3. Viscosity too high
1. Low solids paint
2. Low viscosity
3. Excessive delivery
1. Remove restriction.
2. Secure larger pump or reduce output.
3. Service or replace.
4. Check factory air capacity.
5. Replace with correct nozzle.
1. Flush lines with solvent after each use.
2. Replace or change to finer screen paint filter.
3. Pre-filter paint and/or use larger nozzle orifice.
1. Tighten nut.
2. Readjust.
3. Flush out or replace as needed.
1. Tighten nut.
2. Replace seal.
1. Tighten packing nut.
1. Use slower evaporating solvent.
2. See "Poor Atomization and Distribution".
3. Add solvent or heat.
1. Use less solvent.
2. Use less solvent.
3. Use smaller nozzle, wider fan angle, lower
pump pressure.
(Continued On Next Page)
TROUBLESHOOTING GUIDE
(Cont.)
Vector AA90 Applicators - Maintenance
44
AH-07-01.10
