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Paasche Airbrush A-AUAX-PL User Manual

Automatic spray guns

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DESCRIPTION: The A-AU Automatic Spray Gun is a light duty air

actuated production spray gun. It will cover a range of materials to

include light lacquers, latex, acid or corrosives.

CONNECTIONS to the gun are: Air Inlet 1/4" N.P.T. (F) and Fluid

Inlet 1/4” N.P. T. (M). A-AU Automatic Spray Gun dimensions are:

5-1/8" (L) x 2 1/4” (D)

PACKING WASHERS are leather and treated in oil. For Teflon*

Packings see parts list, Page 3.

OPERATION:

1. Mount Gun in desired position

2. Before installing, blow out air hoses with compressed air to

remove foreign particles.

3. Connect hose from air supply to air inlet fitting.

4. Connect fluid hose to fluid inlet supply.

5. Tighten all hose connections securely.

6. Adjust air pressure to 45-55 P.S.I. at your Air Regulator.

7. Adjust fluid volume by turning the U-3178 Fluid Adjusting

Knob to the left or right.

NOTE: DO NOT USE AS A SHUT-OFF BY TURNING ALL

THE WAY DOWN - IT MAY SPLIT THE TIP. Use

minimum fluid pressure, 5 P.S.I. for light

materials and up to 10 P.S.I. for heavier materials.

TIP REMOVAL:

1. Turn off Air and Fluid Pressure.

2. Release Needle pressure from the seat of Tip, by backing off

the U-3178 Fluid Adjusting Knob approximately 5 turns, then

removing U-2686A Cylinder Cap Assembly.

3. Loosen AU-12 Aircap Nut and remove Multiplehead

Assembly. Leave Needle in place.

4. Unscrew AU-Tip. Place New AU-Tip in position.

5. To replace, reverse above procedure.

MAINTENANCE: Requirements of the A-AU- Automatic Spray

Gun have been reduced to a minimum. The leather packing

washers should be lubricated once a month with a light oil. Old

Packing Washers cause leakage of Air or Fluid and replacement

should be made. Teflon Packings are self-lubricating.

CLEANING: Flush clean solvent through the Fluid passages of the

Spray Gun and Wipe off the outside with clean solvent. Never leave

the entire Spray Gun immersed in solvent. Dirty Aircaps and Tips

should be cleaned by soaking in solvent and blown clean with air.

TROUBLE SHOOTING SPRAY PATTERNS:

(A) A ROUGH OR STIPPLE FINISH is due to low or restricted flow of air

pressure or too heavy materials being applied with spray gun too close
to surface.

(B) A WET OR SAGGING FINISH is due to low air pressure or restricted

flow of air, material being too thin, applied too close to the surface.

(C) A SPUTTERING SPRAY is caused by air leaking into fluid line or can

be caused by a loose fluid tip, a broken or split tip, lumpy material, a
clogged vent hole in cover of material cup, or air leak at fluid pipe
attached to inside of tank cover, or a clogged paint strainer. TO
CORRECT: Tighten tip securely or replace. Strain materials and clean
strainer. Sputtering might also be caused by worn packing washers, or
worn or scored needle

(D) AN ARCHED FAN SPRAY PATTERN is caused by dried material

accumulated in one fan port of the multiplehead distorting the pattern.
TO CORRECT: Dissolve material inside fan port with suitable solvent
applied with a small brush.

NOTE: Never Use Wire or Sharp Instruments to Clean Fan
Ports as Permanent Damage to the Air Ports Will Result In
Destroying Uniformity of the Fan Pattern.

(E) UNBALANCED FAN SPRAY PATTERN heavy on one side, may be

caused by material collecting around outside of the fluid tip and aircap,
or by a loose aircap. TO CORRECT: Remove aircap and clean fluid tip
and aircap with solvent, dry with air pressure. Always be sure fan
aircap is tightened securely.

(F) A HEAVY CENTER in a fan pattern is caused by insufficient air

pressure at the fan port. Rough or shady edges are also caused by low
air pressure. TO CORRECT: Increase air line pressure.

(G) A SPLIT FAN SPRAY PATTERN heavy on each end and light in the

center, is caused by excessive air pressure. TO CORRECT: Reduce
air pressure.

A - A U N F - E 3
A - A U A X - 3
A - A U A X - 3 D
A - A U - L / H e a d

Automatic Spray Guns

OPERATING INSTRUCTIONS AND REPLACEMENT PARTS

INSTRUCTIONS AND PARTS LIST A-AUAX-8/31/2011

Supersedes Instruction & Parts List A-AUAX-4/27/2010

WARNING: Spray materials may be harmful if inhaled or

allowed to come into contact with the skin or eyes. Consult

the product label and Material Safety Data Sheet supplied

for the spray material. Follow all safety precautions.

CAUTION: Well Ventilated Area Required to remove

fumes, dust or overspray. Secure airhose and fluid

hose wrench tight for safety and to prevent leaks.

M a x i m u m A i r P r e s s u r e 1 0 0 P . S . I .

M a x i m u m F l u i d P r e s s u r e 4 5 P. S . I .

Printed in the U.S.A.

Paasche Airbrush Company

4311 North Normandy Avenue

Chicago, IL 60634-1395

Phone: 773-867-9191 • Fax: 773-867-9198

Website: paascheairbrush.com

E-Mail: [email protected]