Graco A Series Instructions-Parts List Manual page 11

PROBLEM
Pump is difficult to prime
continued
Clutch squeaks each time
clutch engages
High engine speed at no
load
Gallon counter not working
Sprayer operates, but dis-
play does not
Distance counter not operat-
ing properly
Mils not calculating
Fluid spray starts after spray
icon is shown on display
Fluid spray starts before
spray icon is shown on dis-
play
Spray icon does not show
on display when fluid is
sprayed
309414N
CAUSE
Paint is too thick
Engine speed is too high
Clutch surfaces are not matched to
each other when new and may cause
noise
Misadjusted throttle setting
Worn engine governor
Broken or disconnected wire
Bad sensor
Missing magnet
Bad connection between control
board and display
Display damaged
Trigger sensor not set correctly
Bad wiring connections
Distance sensor not spaced correctly
from gear
Distance and gear not aligned
Gear teeth missing or damaged.
Wire cracked or broken
Distance sensor
Trigger sensor
Gallon counter
Bad or damaged control board
Interrupter (213) is improperly posi-
tioned
Interrupter (213) is improperly posi-
tioned
Loose connector
Interrupter (213) is improperly posi-
tioned
Reed switch assembly (207) is dam-
aged
Magnet on assembly (207) is missing Replace reed switch assembly (207)
SOLUTION
Thin the paint according to the supplier's rec-
ommendations
Decrease throttle setting before priming pump.
Manual 309413.
Clutch surfaces need to wear into each other.
Noise will dissipate after a day of run time.
Reset throttle to 3700 engine rpm at no load
Replace or service engine governor
Check wires and connections. Replace broken
wires.
Replace sensor
Replace magnet. Locate in correct spot.
Remove display and reconnect
Replace display
See "Spray icon does not show on display
when fluid is sprayed"
Check connector, and reconnect
Adjust space between sensor and gear to .050
/+ .020
Remove tire, and press in or pull out gear to
align sensor and gear.
Replace distance gear/wheel
Replace sensor
See "Distance counter not operating properly"
See "Spray icon does not show on display
when fluid is sprayed"
See "Gallon counter not working"
Replace control board
Turn screw (215) counterclockwise until spray
icon synchronizes with fluid spray
Turn screw (215) clockwise until spray icon is
synchronized with fluid spray
Check that 5-pin connector and reed switch
are properly connected
Turn screw (215) counterclockwise until spray
icon synchronizes with fluid spray
Replace reed switch assembly (207)
Troubleshooting
11