Graco D Series Operation, Parts page 31

Problem
When paint is sprayed, it runs down
the wall or sags.
When paint is sprayed, coverage is
inadequate.
Fan pattern varies dramatically while
spraying.
Cannot trigger spray gun.
Paint is coming out of pressure
control.
Paint is leaking through drain tube.
Paint leaks down outside of pump.
Motor is hot and runs intermittently.
Motor automatically shuts off due to
excessive heat. Damage can occur if
cause is not corrected.
3A3234E
Cause
Material is going on too thick.
Material is going on too thin.
Pressure control switch is worn and
causing excessive pressure variation.
Spray gun trigger lock is engaged.
Pressure control is worn.
Sprayer is over pressurizing.
Pump packings are worn.
Vent holes in enclosure are plugged
or sprayer is covered.
Extension cord is too long or not a
heavy enough gauge.
Unregulated electrical generator
being used has excessive voltage.
Motor needs to be replaced.
Troubleshooting
Solution
Move gun faster.
Choose a spray tip with smaller hole
size.
Choose spray tip with wider fan.
Make sure gun is far enough from
surface.
Move gun slower.
Choose spray tip with larger hole size.
Choose spray tip with narrower fan.
Make sure gun is close enough to
surface.
Take sprayer to an authorized service
center.
Rotate trigger lock to disengage
trigger lock. See page 11.
Take sprayer to an authorized service
center.
Take sprayer to an authorized service
center.
Replace pump packings with new
ProXChange module. See page 25.
Keep vent holes clear of obstructions
and overspray and keep sprayer open
to air.
Replace extension cord. See page 4.
Use electrical generator with a proper
voltage regulator.
Take sprayer to an authorized retailer,
distributor, or service center.
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