Graco A Series Manual page 27

Problem
When paint is sprayed, coverage is
inadequate.
Fan pattern varies dramatically while
spraying.
OR
Sprayer does not turn on promptly
when resuming spraying.
Cannot trigger spray gun.
Paint is coming out of pressure con-
trol switch.
Prime/Spray valve actuates automat-
ically relieving pressure through
prime 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.
See Thermal Overload, page 10.
3A1782D
Cause
Coat is going on too thin.
Pressure control switch is worn and
causing excessive pressure varia-
tion.
Spray gun trigger lock is locked.
Pressure control switch is worn.
System 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.
Troubleshooting
Solution
Move gun slower.
Choose tip with larger hole size.
Choose tip with narrower fan.
Make sure gun is close enough to
surface.
Take sprayer to Graco/M
authorized service center.
Rotate trigger safety lever to unlock
trigger lock, page 11.
Take sprayer to Graco/M
authorized service center.
Take sprayer to Graco/M
authorized service center.
Replace pump packings.
Keep vent holes clear of obstructions
and over spray and keep sprayer
open to air.
Replace extension cord. Read
Grounding and Electrical Require-
ments, page 10.
Use electrical generator with a
proper voltage regulator. Sprayer
requires 220-240 VAC, 50/60 Hz.
AGNUM
AGNUM
AGNUM
27