Graco ti13586a Manual De Usuario

Troubleshooting 

Fluid needle will not trigger.

Loose or missing fluid needle stop 
(29) or setscrew (30).

Air leaking around piston (3).

Swollen piston o-ring (8).

Insufficient air pressure on trigger.

Plug (19) is in incorrect fluid port.

Replace stop or tighten setscrew.

Replace o-ring (8) or piston.

Replace o-ring. Do not immerse 
piston in solvent.

Increase air pressure or clean air 
line.

Move plug to fluid port consistent 
with manifold plumbing, unless 
you are using gun in a circulating 
system. If you are, all fluid ports in 
gun and on manifold should be 
open.

Fluid does not shut off.

Worn o-ring (11) or (9).

Piston cap (4) not fully tightened.

Spring (6) not in place.

Swollen piston o-ring (8).

Replace o-ring.

Tighten piston cap until it bottoms 
out.

Check spring position.

Replace o-ring. Do not immerse 
piston in solvent.

Fluid flow is fluttering while spray-
ing.

Fluid nozzle is not tight enough.

O-ring (36) is missing or dam-
aged.

Fluid filter is clogged.

Tighten fluid nozzle to 60 in-lb
(6.8 N•m).

Replace o-ring.

Check fluid filter.

Fluid flow fades while spraying 
high viscosity fluids.

Fluid pressure is too low, causing 
fluid flow to reduce when gun is 
elevated.

Raise fluid pressure at source or 
use a smaller fluid nozzle.

Pattern becomes off-set or heavy 
on ends.

Air cap horn holes plugged or 
damaged.

Clean air cap horn holes with 
non-metallic item such as a tooth-
pick, or replace air cap.

Gun fluid pressure is too high with 
gun triggered.

Using needle/nozzle kit with too 
small orifice.

Use needle/nozzle kit with larger 
orifice.

Fluid system will not operate at 
low enough fluid pressure [below 
10 psi (70 kPa, 0.7 bar)].

There is no fluid regulator, or air 
regulator on pressure pot is not 
sensitive enough at low pressures.

Add low pressure fluid regulator, 
or add more sensitive low pres-
sure air regulator on pressure pot.