Graco 247936 Benutzerhandbuch

NOTE: Check all possible remedies in the Troubleshoot-
ing Chart before disassembling the gun

.

Installing and servicing this equipment requires 
access to parts which may cause an electric shock or 
other serious injury if the work is not performed prop-
erly. Do not install or repair this equipment unless you 
are trained and qualified.

To reduce the risk of an injury, follow the Pressure 
Relief procedure on page 19 whenever you are 
instructed to relieve the pressure.

Excessive spray fog.

Atomizing air pressure too high.

Close restrictor valve some, or 
decrease air pressure as low as pos-
sible; minimum 40 psi (0.28 MPa, 2.8 
bar) needed at gun for full voltage.

Fluid too thin.

Increase viscosity.

“Orange Peel” finish.

Atomizing air pressure too low.

Open atomizing air valve more or 
increase gun air inlet pressure; use 
lowest air pressure necessary.

Poorly mixed or filtered fluid.

Remix or refilter fluid.

Fluid too thick.

Reduce viscosity.

Fluid leaks from the fluid packing 
area

Worn packings or rod.

Replace packings or rod; see page 
30.

Air leaks from the front of the gun

Air valve (21) is not seating properly.

Clean and service air valve; see 
page 34.

Fluid leakage from the front of the 
gun

Worn or damaged packing rod (26).

Replace; see page 30

Worn fluid seat.

Replace fluid nozzle and/or needle; 
see page 28.

Loose fluid nozzle (7).

Tighten; see page 28.

Damaged nozzle o-ring (7b).

Replace; see page 28.

Gun does not spray

Low fluid supply.

Add fluid if necessary.

Damaged air cap (9).

Replace; see page 28.

Dirty or clogged fluid nozzle (7).

Clean; see page 28.

Damaged fluid nozzle (7).

Replace; see page 28.

Damaged fluid adjustment valve (25). Replace; see page 34.

Dirty air cap

Misaligned air cap (9) and fluid 
nozzle (7).

Clean fluid buildup off air cap and 
fluid nozzle seat; see page 28.