Troubleshooting - Graco HVLP Series Operation, Parts

Troubleshooting

1. Follow ProComp Models, page 9,
before checking or repairing.
Problem
Sprayer not starting
No fluid delivery
3A5085C
Cause
No Power
Sprayer automatically shut-off
while in AutoStart setting
(ProContractor and ProComp
models only)
No material
No cup pressurization
Gun tubing clogged
Fluid inlet clogged
Trigger pin in UNLOCK position
Troubleshooting
2. Check all possible problems and causes
before disassembling the unit.
Check electrical outlet for power.
Cycle ON/OFF switch.
Check that correct power cord is
used and plugged in.
Check circuit breaker. Push to reset.
Verify air valve prior to gun is open.
Trigger gun.
Check cup for material. See Startup,
page 14.
Check for leaks in the FlexLiner
System. See "FlexLiner System"
section, page 33.
ProComp:
Check for air leaks from the remote
cup cover and gasket. Tighten cover
if loose. Clean or replace gasket as
necessary.
Check for air flow from male
quick-disconnect at ProComp outlet.
Turn pressure regulator on remote
cup clockwise. Look for pressure on
gauge. If no pressure, check air line
fittings.
Check hole in remote cup cover at
needle valve for blockage or dirt.
Clean if necessary.
Check for obstructions in gun tubing.
Clean or replace gun tubing if
necessary.
FlexLiner System: Check for
obstructions in material strainer and
inlet fitting.
ProComp:
Check if fluid pickup tube in remote
cup is loose. Tighten.
Blow out and clear material hose.
Check trigger pin location. Must be in
SPRAY position.
What to Do
31