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Operating Instructions and Parts Manual
Troubleshooting Chart
Symptom
No material flow
Slow material flow
Material leak
Spray will not shut off
Pulsating spray
Excessive overspray
www.campbellhausfeld.com
Possible Cause(s)
1. Clogged noz zle/air cap
2. Clogged cup pressure tube or fit tings
3. Clogged gun
4. Clogged ma te ri al tube*
5. Cup seal leaking
6. Material not properly mixed or im prop-
er ly filtered
1. Material too thick
2. Improper ma te ri al ad just ment
3. Wrong nee dle/nozzle
4. Air filter clogged
5. Material not properly mixed or
im proper ly filtered
6. Material too cold
1. Cup or gun damaged
2. Loose pack ing
3. Worn or dam aged packing
4. Worn or dam aged cup seal
5. Loose cup fit tings
6. Loose noz zle
7. Wrong nee dle/nozzle assembly
8. Dam aged nee dle
9. Loose ma te ri al control knob
10. Cup seal leaking
1. Dirty needle
2. Packing too tight
3. Loose ma te ri al control knob
1. Cup seal or check valve leaking
2. Packing im prop er ly adjusted
3. Loose fit tings on cup or gun
4. Loose retaining ring
5. Loose noz zle
6. Dam aged air flow ring
7. Material not properly mixed or
im proper ly filtered
1. Material too thin
2. Ex ces sive air flow
3. Wrong nee dle/nozzle
4. Gun too far from work surface
5. Spray blown by wind
6. Ex ces sive material flow
7. Material not properly mixed or
im proper ly filtered
Corrective Action
1. Dis as sem ble and clean
2. Dis as sem ble and clean (a straight pin can be used to
clean fittings)
3. Dis as sem ble and clean
4. Disassemble and clean gun and check valve
5. Inspect cup seal, cup cap and clean or replace as nec es-
sary
6. Strain paint
1. Clean ma te ri al tube, gun and fittings then thin the
material
2. Adjust ma te ri al control knob
3. Refer to ma te ri al ap pli ca tion chart for correct nee dle /
nozzle
4. Re move and replace air filter
5. Strain paint
6. Raise material temp. to 60°F (15°C)
1. Check cup gun and replace dam aged parts
2. Adjust pack ing nut
3. Re move and replace
4. Re move and replace
5. Tighten
6. Tighten
7. Refer to ma te ri al ap pli ca tion chart for correct nee dle /
nozzle
8. Re place
9. Properly ad just by turning clock wise
10. Clean and dry before use
1. Clean or re place needle
2. Adjust pack ing nut
3. Tighten
1. Dis as sem ble and clean
2. Adjust pack ing nut or replace pack ing
3. Tighten
4. Tighten
5. Tighten
6. Re place
7. Strain paint
1. Check ma te ri al viscosity (add non-thinned material)
2. Adjust air flow
3. Wrong nee dle/nozzle assembly
4. Move gun clos er to surface
5. Shelter area
6. Adjust ma te ri al flow control knob
7. Strain paint
6
HV2100, HV2105, HV3500
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