Graco 3A1696C important safety instructions Troubleshooting, Paint Guns and Bead Guns

Page 19

Troubleshooting

Troubleshooting

Before you proceed with Troubleshooting, perform Pressure Relief Procedure, page 7. Check everything in the troubleshooting tables before you disassemble any equipment.

Paint Guns and Bead Guns

PROBLEM

CAUSE

 

SOLUTION

 

 

 

Paint guns not spraying

Clogged tips

Clean tips

 

 

 

 

Fuse (20A) is blown

Check 20A fuse between engine and solenoid

 

 

air valve connector.

 

 

 

 

Gun arm safety switch

Check to make sure connectors on gun arm

 

 

safety switch are properly attached. When

 

 

gun arm is in down position, measure 12V

 

 

across the switch terminals to ensure it is

 

 

working properly. Replace switch if neces-

 

 

sary.

 

Air compressor and unloader valve

1.

Turn toggle switch at top of unloader (148)

 

 

 

to horizontal. NOTE: Unloader bypasses

 

 

 

air when system pressure reaches

 

 

 

approximately 115-120 psi (8 bar).

 

 

2.

Turn off bead tank air valve (184) to iso-

 

 

 

late system.

 

 

3.

If no leaks, check paint gun actuation air

 

 

 

lines.

 

Paint gun actuation airline

1.

Remove actuation air lines from paint gun.

 

 

2.

Trigger skipline controller.

 

 

3.

If air flows from airline, repair paint gun

 

 

 

(manual 308613). If air does not flow,

 

 

 

check solenoid valves.

 

 

 

 

 

Solenoid valves

1.

Go to diagnostic screen and check to see

 

 

 

if all solenoids are being recognized by

 

 

 

RoadPak Skipline Controller (manual

 

 

 

3A1215).

 

 

2.

Remove solenoid valve cover (519).

 

 

3.

Check for broken wiring or a damaged

 

 

 

plug (see Wiring Diagram, page 25).

 

 

4.

Check for 12V DC between red wire and

 

 

 

ground.

 

Programmable Skipline Controller

1.

Go to diagnostic screen and make sure all

 

 

 

switches are properly working (manual

 

 

 

3A1215).

 

 

2.

Inspect wiring and plugs for damage.

 

 

3.

Replace any damaged wiring or plugs

 

 

 

(manual 3A1301).

 

 

 

 

3A1696C

19

Image 19
Contents Line Striping System Important Safety InstructionsTable of Contents Fire and Explosion Hazard Equipment Misuse Hazard Component Identification Component Function Air System Pressure Relief Pressure Relief ProceduresRPS 2900 Pump Fluid Pressure Relief Bead System Pressure ReliefDrain Oil Changing Hydraulic OilRefilling Oil Belt Removal Compressor Belt and Hydraulic Pump BeltBelt Installation Install side guard 105 by tightening eight screws Removal Hydraulic Pump ReplacementInstallation Perform Pressure Relief Procedures, Compressor ReplacementInstall air line 145 to compressor Engine Removal Engine ReplacementPulley Installation Engine InstallationInstallation Junction Box Circuit Board ReplacementRemoval Paint Guns and Bead Guns TroubleshootingFine Gun arm wobbles Programmable Skipline Controller See Air Compressor Belt Replace Air and Bead SystemPaint Pumps Kohler EnginePaint and Paint Manufacturers Schematics 24F472, Controller Wiring DiagramsControl Cable Diagram for RoadPak System 16G161, Cable, Gun Arm Schematics -16G161, Cable, Gun Arm16G049, Valve, Air Solenoid Schematics 16G049, Valve Air Solenoid15E943, Senor Distance 16G049, Valve, Air Solenoid Graco Information Graco Standard Warranty