Troubleshooting

Problem

Cause

Solution

 

 

 

 

 

 

Pump cycles, but paint only dribbles

Pressure is set too low.

Slowly turn Pressure Control Knob

or spurts when spray gun is trig-

 

(C) clockwise to increase pressure

gered.

 

setting and verify if sprayer pressure

 

 

increases.

 

 

 

 

Spray tip is clogged.

Unclog spray tip, page 12.

 

 

 

 

InstaClean fluid filter is clogged (XR

Clean or replace InstaClean fluid fil-

 

models only).

ter (E).

 

 

 

 

Spray gun fluid filter is clogged.

Clean or replace gun fluid filter (V).

 

 

 

 

Spray tip is too large or worn.

Replace tip.

 

 

 

Spray pattern is inconsistent or is

Pressure is set too low.

Turn Pressure Control Knob (C)

leaving stripes.

 

clockwise, to increase pressure.

 

 

 

 

Spray tip is worn beyond capability of

Replace spray tip.

 

sprayer.

 

 

 

 

Pressure is set at maximum but

Spray tip is too large for sprayer.

Select smaller spray tip.

cannot achieve a good spray pattern.

 

 

 

 

 

Pressure is set at maximum but

Spray tip is worn beyond capability of

Replace spray tip.

cannot achieve a good spray pattern.

sprayer.

 

 

 

 

 

Extension cord is too long or not

Replace extension cord. Grounding

 

heavy enough gauge.

and Electrical Requirements, page

 

 

5.

 

 

 

Pressure is set at maximum but

Spray gun fluid filter is clogged.

Clean or replace spray gun fluid filter.

cannot achieve a good spray pattern.

 

 

InstaClean fluid filter is clogged (XR

Clean or replace InstaClean fluid

 

models only).

filter.

 

 

 

 

Inlet screen is clogged.

Clean debris off inlet screen.

 

 

 

 

Pump valves are worn.

Check for worn pump valves.

 

 

a. Prime sprayer with paint

 

 

b. Trigger gun momentarily.

 

 

When trigger is released,

 

 

pump should cycle

 

 

momentarily and stop. IF

 

 

pump continues to cycle,

 

 

pump valves may be worn.

 

 

Read Pump Check Valves,

 

 

page 11.

 

 

 

When paint is sprayed, it runs down

Coat is going on too thick.

Move gun faster.

the wall or sags.

 

 

 

Choose a tip with smaller hole

 

 

 

 

size.

 

 

 

 

 

Choose tip with wider fan.

 

 

 

 

 

Make sure gun is far enough from

 

 

surface.

 

 

 

When paint is sprayed, coat is not

Coat is going on too thin.

Move gun slower.

covering.

 

 

 

Choose tip with larger hole size.

 

 

 

 

 

 

 

Choose tip with narrower fan.

 

 

 

When paint is sprayed, coat is not

Coat is going on too thin.

Make sure gun is close enough to

covering.

 

surface.

 

 

 

24

309225W

Page 24
Image 24
Graco Inc 309225W specifications Clean or replace InstaClean fluid