Troubleshooting
3A5085C 31
Troubleshooting
1. Follow ProComp Models, page 9,
before checking or repairing.
2. Check all possible problems and causes
before disassembling the unit.
Problem Cause What to Do
Sprayer not starting No Power 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.
Sprayer automatically shut-off
while in AutoStart setting
(ProContractor and ProComp
models only)
Verify air valve prior to gun is open.
Trigger gun.
No fluid delivery No material Check cup for material. See Startup,
page 14.
No cup pressurization 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.
Gun tubing clogged Check for obstructions in gun tubing.
Clean or replace gun tubing if
necessary.
Fluid inlet clogged 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.
Trigger pin in UNLOCK position Check trigger pin location. Must be in
SPRAY position.
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