Graco 3A1696C important safety instructions Air and Bead System, See Air Compressor Belt Replace

Page 23

 

 

 

Troubleshooting

Air and Bead System

 

 

 

 

 

 

 

PROBLEM

CAUSE

 

SOLUTION

 

 

 

Belts squealing during engine startup

Compressor belt needs tightening or

See Air Compressor Belt Replace-

 

replacing

ment, page 9.

 

 

 

Paint guns not spraying when empty

All of air supplied by air compressor is

Fill bead tank with beads or turn off air

bead tank is empty

rushing out of bead gun nozzles. In turn,

supply to bead tank.

 

system air pressure cannot build

 

 

 

enough to trigger guns. This is normal.

 

 

 

 

 

 

No system pressure

Compressor bypassing air continuously

1.

Make sure silver switch on top of

 

 

 

unloader valve (148) is turned hori-

 

 

 

zontally.

 

 

2.

Move silver switch on top of unloader

 

 

 

valve (148) up and down. This might

 

 

 

loosen a sticky valve.

 

 

3.

Replace unloader valve (148).

 

 

 

 

Beads not dispensing properly

Excessive water or moisture in bead

1.

Only pressurize reflective materials

 

tank

 

when dispensing. Small air leaks at

 

 

 

gun nozzle or air fittings cause con-

 

 

 

tinuous moisture to be pumped into

 

 

 

tank.

 

 

2.

For areas of extreme humidity a Ben-

 

 

 

dix air dryer or equivalent may be

 

 

 

installed in air line bead tank. Typi-

 

 

 

cally when beads are used continu-

 

 

 

ously, they do not spend enough

 

 

 

time in tank to collect enough mois-

 

 

 

ture to be a problem. Usually it is

 

 

 

continuous stencil painting for long

 

 

 

periods of time with little bead con-

 

 

 

sumption and high humidity that can

 

 

 

cause problems.

 

 

 

 

Low system pressure

Excessive air leaks

1.

Fix all air leaks before they become

 

 

 

a problem. Air leaks can eventually

 

 

 

starve system air supply.

 

 

2.

Most air leaks occur at bead tank

 

 

 

outlet fitting. If fitting leaks air, com-

 

 

 

pletely remove it and use thread tape

 

 

 

and liquid thread sealant before rein-

 

 

 

stalling it.

 

 

 

 

No beads dispensing

Beads have solidified

1.

Never store RoadLazer with reflec-

 

 

 

tive materials in tank for long periods

 

 

 

of time.

 

 

2.

Remove aluminum fitting from bot-

 

 

 

tom of tank. Flush out solidified

 

 

 

beads.

 

 

3.

Use air hose or water hose to break

 

 

 

up and remove solidified beads from

 

 

 

tank.

 

 

 

 

3A1696C

23

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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 ReliefRefilling Oil Changing Hydraulic OilDrain 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 InstallationRemoval Junction Box Circuit Board ReplacementInstallation Paint Guns and Bead Guns TroubleshootingFine Gun arm wobbles Programmable Skipline Controller See Air Compressor Belt Replace Air and Bead SystemPaint and Paint Manufacturers Kohler EnginePaint Pumps Control Cable Diagram for RoadPak System Wiring DiagramsSchematics 24F472, Controller 16G161, Cable, Gun Arm Schematics -16G161, Cable, Gun Arm15E943, Senor Distance 16G049, Valve, Air Solenoid Schematics 16G049, Valve Air Solenoid16G049, Valve, Air Solenoid Graco Information Graco Standard Warranty