Central Pneumatic 66871 - Troubleshooting Spray Pattern Issues; Spray Pattern Diagnosis and Solutions

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SKU 66871 Page 15
IMPORTANT: The Spray Gun must be cleaned immediately after use.
Improper cleaning is a common reason for the Spray Gun not to work.
If the steps above do not solve the problem or if the repairs
involved are too complex, contact a qualied technician.
Troubleshooting
Spray Pattern Diagnosis
The drawings on the left below resemble symptoms of spray pattern problems. Please
refer to the accompanying possible problems and solutions if you are experiencing
similar difculties.
Problem Possible Causes Likely Solutions
1. The Pattern Control Knob is
partially closed.
2. The material is too thick.
3. The air pressure is too low.
1. Open Pattern Control Knob.
2. Thin material according to the
manufacturer’s instructions.
3. Increase air pressure within the Operating
Air Pressure shown on Specication chart.
1. High air pressure.
2. Not enough uid.
3. Pattern Control Knob open too
much.
1. Reduce air pressure.
2. Increase uid.
3. Partially close Pattern Control Knob.
1. Air Cap plugged.
2. Air Cap loose or dirty seal.
3. Dried material on uid tip.
1. Clean the Air Cap.
2. Clean and tighten Air Cap and seal.
3. Use a nonmetallic point to clean the Air
Cap.
1. Dirt on one side of the uid tip.
2. Holes on one side of the Air
Cap are plugged.
1. Clean uid tip.
2. Clean the Air Cap with a nonmetallic point.
Follow all safety precautions whenever diagnosing or servicing the
tool. Disconnect air supply before service.