Graco 16N664 Operation - Repair - Parts page 27

Troubleshooting
Problem
Sprayer sprays with poor results
Paint leaks from sprayer trigger
area.
Battery is discharged but charger
still displays green light when bat
tery is inserted.
Battery does not last long.
Charger status indicator light
remains solid red. Battery does
not charge.
Spray Pattern Diagnostics
Problem
Spray pattern is pulsating:
3A2853C
Cause
Spray tip is partially clogged.
Spray tip is not in correct position.
Incorrect spray tip for application of
material.
Spray tip filter is partially clogged or
damaged.
Flexible suction tube strainer is par
tially clogged.
Spray tip is worn or damaged.
Material being sprayed is aerated
because it was shaken.
Pressure control knob is too low.
Material being sprayed is too cold to
spray.
Inlet or outlet valve fitting is worn.
Pressure is set too high for thin mate
rial.
Pump has reached its maximum life.
Damaged battery.
Battery life varies with material, spray
tip size, pressure, and speed setting.
Hot charging environment or dam
aged battery.
Cause
Operator is moving too fast while spraying. Slow speed of movement.
Spray tip or spray tip filter is clogged.
Solution
See Unclogging Spray Tip/Guard
Assembly, page 14.
Rotate spray tip to SPRAY position.
See Choosing the Correct Tip, page 12.
Clean or replace spray tip filter. See page
14.
Clean or replace flexible suction tube.
See page 15.
Replace spray tip. See Install Spray
Tip/Guard Assembly, page 13.
Do NOT shake material. Stir the material
or check the manufacturer's recommen
dation for the material being sprayed.
Turn up pressure control knob.
Warm material.
See Outlet Valve Fitting Repair, page
23 and Inlet Valve Fitting Removal/Ser
vice, page 22.
Turn pressure control knob down.
Replace pump.
Replace battery.
See Charging the Battery, page 6.
See Charging the Battery, page 6.
Unplug charger from outlet for 10 sec
onds to reset charger status indicator
light. Attempt to charge again. If problem
persists, move charger to cooler environ
ment or replace battery.
Solution
Unclog spray tip or clean spray tip filter,
page 14.
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