Troubleshooting

Troubleshooting

Installing and servicing this equipment requires access to parts which may cause an electric shock or other serious injury if the work is not performed properly. Do not install or service this equipment unless you are trained and qualified.

To reduce the risk of a skin injection injury, always follow the Pressure Relief Procedure, page 27, whenever you are instructed to relieve the pressure.

NOTE: Check all possible remedies in the Troubleshooting Chart before disassembling the gun.

Spray Pattern Troubleshooting

NOTE: Some spray pattern problems are caused by the improper balance between air and fluid.

Problem

Cause

Solution

 

 

 

Fluttering or spitting spray.

No fluid.

Refill supply.

 

Air in fluid supply.

Check fluid source. Refill.

Irregular pattern.

Fluid buildup; partially plugged tip.

Clean. See

 

 

Clean the Gun Daily, page 29.

 

Worn/damaged tip or air cap holes.

Clean or replace.

Pattern pushed to one side; air

Air cap holes plugged.

Clean. See

cap gets dirty.

 

Clean the Gun Daily, page 29.

Tails in pattern.

Air pressure too low.

Open atomizing air adjustment

 

 

valve.

 

Fluid pressure too low.

Increase.

Fluid buildup on air cap/tip guard. Air pressure too high.

Decrease.

Fluid pressure too low.

Increase.

Air cap holes plugged.

Clean. See

 

Clean the Gun Daily, page 29.

3A2495C

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Graco 3A2495C important safety instructions Spray Pattern Troubleshooting, Problem Cause Solution, Clean the Gun Daily