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6

Operating Instructions and Parts Manual

Troubleshooting Chart

Symptom

Possible Cause(s)

Corrective Action

Spray not uniform
(spitting)

Poor pattern

Overheating

Poor air flow

Spray tip clogs

1. Check material viscosity (Thin 

per instructions)

2. Change to proper needle/nozzle
3. Tighten cup, replace seal or check valve

4. Adjust or replace packing
5. Strain paint

1. Clean nozzle and air cap
2. Replace
3. Clean
4. Strain paint

Replace

1. Replace filter
2. Adjust air flow control

1. Adjust material control
2. Replace cup seal
3. Change to proper needle/nozzle

1. Material too thick

2. Wrong needle/nozzle assembly
3. Cup seal leaking

4. Loose packing
5. Material not properly mixed or im-

properly filtered

1. Material buildup on nozzle or air cap
2. Worn nozzle/needle
3. Clogged air cap
4. Material not properly mixed or im-

properly filtered

Clogged filter

1. Clogged filter
2. Air flow control improperly adjusted

1. Improper material flow adjustment
2. Cup seal leaking
3. Wrong needle/nozzle

1. Use a slower solvent or add a retarding agent

2. Move gun closer to surface
3. Thin material per thinning instructions

1. Add material to increase thickness
2. Move gun more quickly
3. Turn material control knob clockwise to reduce

flow

4. Move gun further from surface

1. Apply material in lighter coats allowing solvents

time to evaporate

2. Possible bad material
3. Thoroughly clean all parts

1. Use solvent to clean all parts and work surfaces

1. Dry surface
2. Make sure coatings are compatible

Thoroughly clean surface

1. Reduce thinner
2. Refer to “Operation” for spraying instructions

Troubleshooting Chart - Finish Quality

Symptom

Possible Cause(s)

Corrective Action

Orange Peel
(Rough rolling
appearance similar to
an actual orange
peeling)

Runs and sags

Pin-holing and solvent
pops

Fish eye

Blistering

Lumpy, coarse surface

Mottled surface finish

1. Material drying too fast

2. Gun too far from surface
3. Material too thick

1. Material too thin
2. Moving gun too slow
3. Excessive material flow

4. Gun too close to surface

1. Trapped solvents

2. Pigment settling
3. System contamination

Possible silicone contamination

1. Moisture in/on surface
2. Incompatible top coats or under-

coats

Dirt on surface

1. Too much thinner
2. Poor spray technique

• Weather conditions can cause unsatisfactory results when spraying some coatings.
• High humidity prolongs set, and cure times.
• High temperatures decrease set, and cure times.
• Cold temperatures extend set, and cure times.
• Variations in temperature, and humidity can cause variations in finish quality.
• Coating manufacturers can recommend additives to resolve some of these problems, and should be contacted for

assistance with particular problem resolutions.

!

NOTICE

Summary of Contents for HVLP

Page 1: ...ever For Quick Release Paint Cup Material Control Knob 1 Quart Cup Air Cap Port Cap can be moved to bottom for rear air connection Figure 1 Features Use a solvent compatible with the coating to be spr...

Page 2: ...also clogs pressure delivery tube and fittings The spray gun will not function when clogged When not in use be sure to disconnect hose and place gun on a solid level surface to avoid tipping 1 Gun fu...

Page 3: ...object being sprayed See Figure 7 If the material delivery is adjusted for a small narrow pattern it may be necessary to move closer to the work surface 2 Move gun in a smooth even stroke Begin strok...

Page 4: ...or in soap and water if latex was used To clean the gun pour solvent through material tube until the solution clears See Figure 11 4 Use cleaning brush saturated with solvent to clean material tube an...

Page 5: ...viscosity add non thinned material 2 Adjust air flow 3 Wrong needle nozzle assembly 4 Move gun closer to surface 5 Shelter area 6 Adjust material flow control knob 7 Strain paint 1 Clogged nozzle air...

Page 6: ...rom surface 1 Apply material in lighter coats allowing solvents time to evaporate 2 Possible bad material 3 Thoroughly clean all parts 1 Use solvent to clean all parts and work surfaces 1 Dry surface...

Page 7: ...wing information Address parts correspondence to Model number Campbell Hausfeld Serial number if any Attn Parts Department Part description and number as shown in parts list 100 Production Drive Harri...

Page 8: ...ASE AS STATED IN THE DURATION If standard duty product is used for commercial or industrial purposes the warranty will apply for ninety 90 days from the date of original purchase If product is used fo...

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