Graco Inc ti1600a, 309292S, ti1248a important safety instructions Gun Operation Troubleshooting

Problem

Cause

Solution

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

Worn packings or rod.

Replace packings or rod; see page

area

29.

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

Worn or damaged packing rod (26).

Replace; see page 29

gun

Worn fluid seat.

Replace fluid nozzle and/or electrode

needle; see pages 26 to 27.

Loose fluid nozzle (7).

Tighten; see page 26.

Damaged nozzle o-ring (7b).

Replace; see page 26.

Gun does not spray

Low fluid supply.

Add fluid if necessary.

Damaged air cap (9).

Replace; see page 26.

Dirty or clogged fluid nozzle (7).

Clean; see page 26.

Damaged fluid nozzle (7).

Replace; see page 26.

Damaged fluid adjustment valve (25).

Replace; see page 34.

Dirty air cap

Misaligned air cap (9) and fluid noz-

Clean fluid buildup off air cap and

zle (7).

fluid nozzle seat; see page 26.

22

309292S