Universal Air Tools UT57A User Manual

Operator Instructions

Includes - Foreseen Use, Work Stations, Putting Into Service, Operating,
Dismantling, Assembly and Safety Rules

Important

Read these instructions carefully before installing, operating,
servicing or repairing this tool. Keep these instructions in a safe
accessible place.

Manufacturer/Supplier Product Type

Universal Air Tool Company Limited
Unit 8
Lane End Industrial Park
High Wycombe
Bucks

Spray Gun - Syphon Type
(1 litre cup) 1.8mm

Model No/Nos Serial No

UT57A

HP14 3BY

Tel No Fax No[phone] [phone]

RPM

N/A

Cycles Per Min

N/A

Product Nett Weight

1.85

0.84 5/16 8 30 10

Recommended Working
Recommended Minimum
Maximum

Use - Safety Glasses
Use - Safety Gloves
Use - Safety Boots
Use - Breathing Masks

lbs
Kg

Air Pressure

Personal Safety Equipment

Recommended Use Of

Balancer Or Support

No

2.06
n/a

4.83

bar
bar
bar

30

n/a

70

Yes
Yes

Yes

Recommended Hose Bore

Size - Minimum

Ins M/M Ft M

Noise Level Sound Pressure Level TBA dB(A)

PSI

Test Method Tested in accordance with ISO

PSI

Standard 3744

PSI

Sound Power Level TBA dB(A)

Vibration Level

Test Method Vibration testing not required for a

spray gun

Recommended Max.

N/A

Metres / Sec²

Use - Ear Protectors

Foreseen Use of Tool

This product is designed for the purpose of applying liquids in the form
of paint, lacquers, etc. to a surface for the purpose of providing a
decorative or protective finish. It must not be used for or modified for
any other purpose unless first consulting the manufacturer or an
authorised representative.

Work Stations

The spray gun should only be used as a handheld hand-operated
device. It is always recommended that the spray gun is used when
standing on the solid floor. It can be used in other positions provided the
spray gun is kept near vertical and the operator has a firm grip and
footing. Any work station must take account that the liquid being
sprayed should not be breathed in and the liquid can be highly
flammable and spraying should never be undertaken near naked flames
or hot surfaces. Do not smoke. It should also take account that not all of
the liquid being sprayed will be applied to the object being sprayed and
account must be taken that this surplus, i.e. “over spray” will be
deposited in the surrounding area.

(see later). The gun is fitted with a quart (2 pints/1.13 litres) syphon cup
complete with paint strainer.
Use 1.8mm diameter nozzle for polymer paints, oil base paints, epoxy
paints for metals, acrylic lacquers, urethane.
Before spraying any material first read any instructions concerning its
safe use and if nothing is available check with the manufacturer about its
use and the need to use personal safety equipment.
Prepare the paint in accordance with the manufacturer’s
recommendations and place in syphon container. Do not overfill.
Connect the gun to a clean, moisture/oil free air supply at the right
pressure. Fit container to the gun and lock in position. Use the material
adjustment control screw (18) to adjust material flow and the fan
adjustment assembly (17) to adjust from round to fan spray pattern.
Make all adjustments before attempting to spray the work piece.
Note the spray gun can work at pressures of between 30 and 70 psi
and the air consumption is approximately for these pressures from 3 to
7 cfm.
For advice on spraying, using, cleaning, etc., the spray gun, see
attached sheets 4 to 7.

Hose Length

Operating

The Spray Gun is a handheld syphon type
compressed air atomising spray gun
suitable for use with most liquids for paint
spray finishing or the application of
surface coatings. It is a non bleeder type
with external mix nozzle air cap assembly
and full control for material application
and spray pattern between round and fan

Page No 1

Dismantling & Assembly Instructions

Disconnect the spray gun from the air supply.
Remove the basic cup container by use of the cam lever on the top of
the lid and empty the contents of the cup into a safe, suitable container.
Such a container should be kept in an approved paint storage area.
Unscrew the lock nut on top of the cup lid assembly to remove the lid
assembly from the spray gun body.
Pull off the paint strainer from the body of the lid assembly centre tube
and unscrew the nut on the underside of the lid. It is then possible to
separate the lid, centre tube assembly, the locking cup arm and the
cam lever.
Take off the E ring (24) from the trigger stud (23) and re move the trigger
(21).
Unscrew nipples (6) & (19) from the spray gun body (5). Unscrew air
cap (1) and nozzle (2) then unscrew the nipple at the top rear of the
body (1) and remove the pattern adjustment assembly (7) complete.
Unscrew the fluid adjusting screw (18) and take out the needle (16)
packing holder (9) and O-ring (10) take off the fluid adjust guide set (15)
spring (14) air valve seat set (13 & 13-1) air valve seat set (12 & 12-1)
and gasket (11).
Plug (24) and packing (3) can now be removed from the air valve body.
Unscrew packing screw (8) and remove packing (9).

Reassembly

Clean all parts thoroughly to remove all traces of paint with suitable paint
removal liquids. Be careful when cleaning paint air cap (1), nozzle (2)
particularly from the small holes. Clean out holes using wooden
cocktail sticks or non metallic toothpick as any increase in hole
size, deformation or raising of burrs will change the spray pattern.
Carefully check packing (3) and (9) for paint contamination, splitting
and hardening and replace with other worn or damaged parts as
necessary. Replace parts with parts obtained from the manufacturer or
an authorised distributor.

Safety Rules when Using or Cleaning a
Spray Gun

Warning

Many fluids that will clean painted surfaces are very flammable and
the vapours should not be breathed. Always ensure that such
cleaning materials are correctly stored, used away from hot surfaces
and flames and cleaning takes place in well ventilated areas.
There are available special spray gun cleaning devices where the
spray gun may be partially or totally dismantled and the parts cleaned
within a container.
Smoking should be totally banned in areas where spray painting is
performed or cleaning takes place.
Use of spray guns should conform with all legislation relating to spray
painting.
Fire extinguishers should be readily available in the spray application
and cleaning areas.
All work stations must be provided with adequate ventilation to
remove any fumes resulting from the spray painting work and
cleaning process.
Paint flowing through hoses can create static electricity which if a
spark occurs could cause fire or an explosion. Such risks should be
eliminated by the use of “earthing” techniques.
Certain materials that can be used with spray guns may give off toxic
vapours that can be poisonous, irritants or create a general hazard to
health. The instruction supplied with any material should be carefully
read and understood before using the material. If such information is
not availabe - find out - never use if such information is not available.
Always follow the manufacturer’s instructions.
It is recommended that respiratory equipment is always used when
paint spraying and the type and efficiency of the equipment to match
the requirement of the material being used.
Use protective gloves when spraying and cleaning.
Use eye goggles when spraying and cleaning.

It is recommended that all operators connected with any aspect of
spray painting, including cleaning are fully trained by personnel
competent to train.
Certain solvents are in the category “Halogenated Hydrocarbon
Solvents” and these solvents can have a chemical reaction with
zinc plated, galvanized or aluminium parts and can cause an
explosion hazard particularly if the parts are under pressure. This
equipment as supplied is suitable for use with these materials but the
instructions supplied with the solvent must always be carried out.
Golden Rule - Before using any equipment with “Halogenated
hydrocarbons solvents” Check that it is acceptable to do so.

Misuse

Never ever point a spray gun in operating mode at any other
person. Make sure that the ejected spray from the nozzle never
comes in contact with any part of the body.
Never exceed the maximum allowed working pressure.
Before attempting to change materials or clean the spray gun
disconnect from the air supply and tip any unused material into
suitable containers, seal and store as required by legislation, i.e.
fireproof stores, etc.

Cleaning the Gun

It cannot be emphasized too strongly that the care, cleaning and
maintenance of the gun are of utmost importance. At the end of each
day or shift, the gun should be thoroughly cleaned. Never immerse
the complete gun in a cleaning solvent. This allows sludge and dirt to
collect in passages/holes within the gun which may eventually be
blown on to the surface being sprayed. Solvents also remove
lubricants from packings and cause the air valve and material needle
to stock.
The air cap/spreader should be removed and immersed in clean
cleaning fluid. If the holes have become clogged never never use
wire or other metallic devices to clean them. The small holes are
precision drilled to very close tolerances and any enlargement by the
abrasive action of metal will permanently affect and distort the spray
pattern when the only remedy is a replacement part.
Some additional advice is given in the following diagrams
(see page 7).

Hints on Paint Spraying

Having selected the type of system/gun to be used and the paint to
be sprayed, it is important to make sure that the compressor has
sufficient capacity to supply the gun on a continual basis. As most
compressors deliver air with oil/moisture content and sometimes
small particles of dirt, it is strongly recommended that an air
filter/moisture remover is incorporated in the air line between the
gun and the compressor. Most compressors produce the
compressed air at 100 psi and above so the incorporation of a
pressure reducing valve may be necessary as most spray guns are
designed to work at between 30 and 80 psi with the average being
50 psi. The importance of this equipment cannot be stressed
enough as oil and moisture in the airline combined with over
pressure, can almost certainly lead to very poor contaminated paint
finishes.
It is important to remember that a spray gun is a highly efficient
compact and delicate piece of equipment. The care with which it is
used will pay dividends in the form of superior finishes and reduction
in rejects to the operator who familiarises himself/herself with its
possibilities and limitations. It is the daily routine cleaning that keeps
the equipment at peak efficiency, not the occasional attention of the
operator who only remembers when the desired finish is not
achieved.

Handling the Spray Gun

To use a spray gun efficiently, there are a number of very
important general principles and fundamental motions of

Page No 2

UT57A Spray Gun - Syphon Type

Ref No Part No Description

1 9920000201 Air Cap
2 9930000101 Fluid Nozzle 1.3
2 9930000102 Fluid Nozzle 1.4
2 9930000103 Fluid Nozzle 1.5
2 9930000106 Fluid Nozzle 1.8
2 9930000107 Fluid Nozzle 2.0
2 9930000109 Fluid Nozzle 2.5
3 9000000100 Needle Packing Set
4 9000000200 Needle Packing Seat
5 9910000200 Body Set
6 9000000300 Fluid Nipple
7 9000000401 Pattern Adj.Set
8 9000000500 Air Valve Shaft

9 9000000600 Packing Holder
10 9000000700 O-Ring
11 9000000800 Gasket
12 9000000900 Air Valve Seat Set

12-1 9000000910 O-Ring

13 9000001000 Air Valve Seat Set

13-1 9000000700 O-Ring

14 9000001100 Air Valve Spring

May 2008 Ver 1.10

Ref No Part No Description

15 9000001200 Fluid Adj.Guide Set
16 9940000101 Fluid Needle 1.3
16 9940000102 Fluid Needle 1.4
16 9940000103 Fluid Needle 1.5
16 9940000106 Fluid Needle 1.8
16 9940000107 Fluid Needle 2.0
16 9940000109 Fluid Needle 2.5
17 9000001300 Needle Spring
18 9000001401 Fluid Adj.Knob
19 9000001500 Air Inlet Nipple
20 9000001601 Air Adj.Set
21 9000001700 Trigger
22 9000001800 Gasket
23 9000001900 Trigger Stud
24 9000002000 E-Ring
25 9710001400 Spanner
26 9720002100 Brush
27 9830000310 Complete Lid Ass’y
28 9830000330 Gasket
29 9830000340 Gasket
30 9830001920 Cannister

Page No 3