Graco RTX 650 important safety instructions Relieve Pressure, page 6. Clean

Page 15

Troubleshooting

Problem

Cause

Solution

 

 

 

 

 

 

Speed of application too slow

New pump hose not broken in

Run pump dry for no longer than 2

 

properly

minutes.

 

 

 

 

Material too thick

Thin material.

 

 

 

 

Nozzle too small

Change nozzles to a larger size. See

 

 

Operation Manual, Recommended

 

 

Nozzle Selection Chart, page 10.

 

 

 

 

Plugged or dirty gun

Relieve Pressure, page 6. Clean

 

 

gun.

 

 

 

 

Kinked hose

Unkink hose.

 

 

 

 

Gun fluid flow adjustment set too low

Increase flow adjustment with flow

 

 

adjustment nut.

 

 

 

Intermittent flow/sputtering

Hopper connection not tight

Check gasket. TIghten connection.

 

 

 

 

Debris in system

Clean system.

 

 

 

Gun will not shut off

Worn nozzle or needle.

Relieve Pressure, page 6. Replace

 

 

worn parts.

 

 

 

 

Debris in needle passage

Relieve Pressure, page 6. Clean.

 

 

 

Fluid leaking at Flow Adjustment Nut

Damaged seal.

Relieve Pressure, page 6. Replace

on gun

 

seal.

 

 

 

Fluid leaking out of either plug on gun

Missing or damaged o-rings

Relieve Pressure, page 6. Replace

 

 

o-rings.

 

 

 

 

Gun damaged

Replace gun.

 

 

 

Needle adjustment on gun won’t

Dirty threads

Clean threads.

adjust

 

 

Nozzle not on gun

Put nozzle on gun.

 

 

 

 

15

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