Paasche A-AUAX-PL User Manual

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

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

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

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.

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 Ven til ate d A rea Re qui red to re mov e
fum e s, d ust or over s pray. Secu r e a i rhos e a n d f l uid
hos e wre n c h ti g ht f o r saf e ty a n d to p reve n t lea k s.

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 .

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.

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.

Paasche Airbrush Company

4311 North Normandy Avenue
Chicago, IL 60634-1395

Phone: [phone] • Fax: [phone]

Website: paascheairbrush.com
E-Mail: [e-mail]

(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.

Printed in the U.S.A.

A-AU Less Head and Less Needle

AU-1914B CYLINDER ASSEMBLY

AU-7B U-3502 U-873E U-2686A

Fluid Body Packing Set Piston Assembly Cylinder Cap Assembly

15 16 17 18 19 20 19 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

Includes Item 24

13

14

No Part No. Description

Fluid Body

15. AU-7B Fluid Body/L Needle

U-3502 Packing Set

16. U-28-12 Packing Washers (12)

17. U-29 Packing Gland (1)

18. DU-30 St. St. Spring (1)

19. U-203 Gland (1)

24. U-322 Cup Leather (1)

AU-1914B Cylinder Assembly Less Needle

19. U-203 Gland

20. U-28-12 Packing Washers (3) (Sold by Dozen)

21. U-1907B Shell Assembly

13. U-3632 Small “O” Ring

14. U-3633 Large “O” Ring

27. U-2966 Piston Spring
(Note: Includes U-873E & U-2686A)

27. U-2687 Light Spring Action (Special Only)

A-AUNF-E3

1. A-AU Less Head and Less Needle

2. ANFA-3 Aircap

3. AU-12 Plated Aircap Nut

4. AU-3 Tip

5. A-AU-3 Needle

6. AE-3 Extension

No. Part No. Description

U-873E Piston Assembly

22. U-2965 Needle Chuck

23. U-2964 Inner Bushing

24. U-322 Cup Leather

25. U-2465A Outer Disc

26. U-2544 Locknut

U-2686A Cylinder Cap Assembly

28. U-2707A Cylinder Cap

29. U-941 Spring Washer

30. U-951B Fluid Dial

31. U-2675 Friction Dial

32. U-1098 Spring

33. U-2584 Washer

34. 59-57 Lock Stud

35. U-3178 St. St. Fluid Adjusting Knob

36. 59-56 Lock Screw

NOTE: Do not use as a shut-off by turning all the way down,

*

23 4 6

it will split the tip!

5 LP HP

*

A-AUAX-3

1. A-AU Less Head and Less Needle

6. AXNFA-3 Aircap

7. AXNT-1 Tip

8. AX-3 Extension

5. A-AU-3 Needle

A-AUAX-3D

1. A-AU Less Head and Less Needle

9. AXIF-D Aircap

10. AX-1 Tip

8. AX-3 Extension

5. A-AU-3 Needle

5 LP HP

67 8

5 LP HP

9 10 8