Neilsen CT3321 User manual

SPRAY GUN CT3321
ORIGINAL INSTRUCTIONS
SAVE THESE INSTRUCTIONS AND PRECAUTIONS.
READ ALL PRECAUTONS AND INSTRUCTIONS BEFORE USE.
Cannon Tools Limited
Address: 20 Station Road, Rowley Regis, West Midlands, B65 0JU.U.K.

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EC DECLARATION OF CONFORMITY
We CANNON TOOLS LTD
20 Station road, Rowley Regis, West Midlands,B65 0JU.U.K.
Declare that the following machine complies with the appropriate basic safety and
health requirements of the EC Directive based on its design and type, as brought
into circulation by us.
In case of alteration of the machine, not agreed upon by us, this declaration will
lose its validity.
Product description: SPRAY GUN
Model: CT3321
Applicable EC Directives:
EC Machinery Directive 2006/42/EC
Harmonized standards
EN ISO 12100, EN 1953
20 Station Road, Rowley Regis, West Midlands, B65 0JU.U.K.
Mr. Gurcharan Tony Singh Sanghera
Managing Director
CANNON TOOLS LTD
2016-11-02

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1. SAFETY WARNINGS
SYMBOLS
In this manual and/or on the machine the following symbols are used:
Locate the spray gun in a suitable work area. Keep this area clean and tidy and free from
unrelated materials. Ensure that there is adequate ventilation and lighting.
Familiarise yourself with the application, limitations and potential hazards peculiar to the
spray gun.
WARNING! Disconnect the spray gun from the air supply before changing accessories,
servicing or performing any maintenance.
Maintain the spray gun in good condition (use an authorised service agent).
Replace or repair damaged parts. Use authorised parts only. Unauthorised parts may be
dangerous and will invalidate the warranty.
Keep the spray gun clean for best and safest performance.
Ensure that the compressed air system can supply the spray gun air consumption for the
model to be used.
Wear approved safety respiratory protection and safety eye goggles.
If spraying isocynate based finisher, wear approved respirator/clean air breathing apparatus
and cover exposed skin with latex gloves and an impervious hooded coverall.
Remove ill-fitting clothing. Remove ties, watches, rings and other loose jewellery and tie
back long hair.
Keep children and unauthorised persons away from the work area.
When not in use, ensure that the air supply is turned off.
Avoid unintentional operation of the spray gun.
When not in use, disconnect the spray gun from the air supply, clean thoroughly and store
safely.
Denotes risk of personal injury, loss of life or damage to the tool
in case of non-observance of the instructions in this manual.
Wear hearing protection.
Wear safety goggles.
Contact with or inhalation of dust coming free during use (e.g.
lead-painted surfaces, wood and metal) can endanger your
health and the health of bystanders. Always wear appropriate
protective equipment, such as a dust mask. Always use proper
dust extraction during use.
Wear gloves.

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DO NOT point spray gun at yourself, other persons or animals.
DO NOT direct air from the air hose at yourself, other persons or animals.
DO NOT carry the spray gun by the hose, or yank the hose from the air supply.
DO NOT exceed the working pressure of 50psi.
DO NOT use the spray gun for any purpose other than that for which it is designed.
DO NOT allow untrained persons to operate the spray gun.
DO NOT get the spray gun wet or use in damp or wet locations or in areas where there is
condensation.
DO NOT operate the spray gun if any parts are missing or damaged as this may cause
failure and/or personal injury.
WARNING! The warnings, cautions and instructions in this manual cannot cover all possible
conditions and situations that may occur. It must be understood by the operator that
common sense and caution are factors which cannot be built into this product, but must be
applied by the operator
2. SPECIFICATION
Air inlet: 1/4"
Nozzle Size: 0.8mm
Cup size: 120cc
Operating pressure:30-50 psi
Air consumption: 2-8 cfm
3. AIR SUPPLY
FAILING TO COMPLY WITH THESE INSTRUCTIONS WILL RESULT IN YOUR AIR TOOL
FAILING EARLY; THIS WILL NOT BE COVERED BY THE GUARANTEE.
To get the best from your spray gun you will need to connect it to a compressor easily able of
supplying the large amount of air that it this type of product demands.
To make sure enough air reaches the gun, it should be supplied using a 3/8" diameter line or
greater. If you are using an air tool on a hose over 25ft. long it is advisable to increase the bore
of the hose to the next larger size available.
This air tool operates at a maximum pressure of 30psi or 50psi depending on model and must
be controlled via a joint pressure regulator/water separator unit which with proper maintenance
will ensure a constant supply of dry air at all times. Water from condensation can build up inside
the compressor tank and air lines: this will cause your equipment to rust if not properly dealt
with.
Always check the air line output operating pressure before connecting the spray gun.

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4. ASSEMBLY
Carefully remove everything from the packaging and compare it against the contents
list. If anything appears to be missing please contact the place of purchase.
ATTACHINGANAIR LINE COUPLING (Fig.1):
After purchasing the spray gun and before initial use an
air line coupling must be fitted that is compatible with
your compressor's trailing hose.
1. Select a suitable 1/4”female thread air line coupling.
2. Wind a length of PTFE tape around the thread.
3. Screw the coupling on to the spray gun.
4. The connection must be firm for an airtight union.
CONNECTING THE PAINT POT (Fig.2):
After purchasing the spray gun and before initial use,
wash the spray gun through to clear the air and paint
channels of any debris or dust.
1. Turn the paint pot lid (A) anticlockwise to remove it.
2. Fill the paint pot with material.
3. Carefully refit the pot lid (A). Turn the lid
anticlockwise a little to seat it correctly on the
thread, before turning it clockwise to tighten.
4. Make sure the bleed screw (B) is screwed in to
prevent paint loss.
5. Screw the paint pot assembly into the top of the
spray gun connector (C). Turn the pot clockwise
until tight.
5. OPERATION & USE
Only when you are ready to begin spraying should you connect your air supply to the spray
gun.
WARNING! Read and understand the safety instruction section of this document before attempting to operate
your spray gun.
Before each day's use this process should be followed to ensure your spray gun is set up for
the best possible performance. Time spent setting up the gun and spraying test patterns each
time is worthwhile exercise and will result in a quality finish when paired with a suitable air
supply and a practiced spraying technique.
SPRAY GUN SETUP - SPRAY PATTERN CONTROL
(Fig.3):
The spray pattern control (D) regulates the air flow out
through the air diffuser horns (E) which in turn changes
the shape of the spray pattern.
1.Open the spray pattern control (D) anticlockwise to
widen the pattern.
2. Closing the control (D) clockwise will make the spray
pattern narrower.

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SPRAY GUN SETUP - AIR CONTROL (Fig.4):
The air control (F) regulates the volume of air passing
through the gun. As the air passes out through the
diffuser horns (E), it mixes with the paint being sprayed.
This causes the paint to breakdown in to tiny individual
droplets [atomization].
1.Twist the air control (F) anticlockwise to increase the
volume of air or clockwise to decrease the flow.
The 0 and Max. settings are stamped on either side of
the spray gun, adjacent to the air flow control.
SPRAY GUN SETUP - PAINT CONTROL (Fig. 5):
The paint control (G) adjusts the distance the trigger
(H) can be pulled.
1.Turn the paint control (G) clockwise to limit the
distance the trigger can be pulled (H).
2.Closing the control (G) clockwise will make the spray
pattern narrower.
CAUTION! Continuing to turn the paint control will
release the spring tension on the fluid needle allowing
removal.
SPRAY GUN SETUP - TEST PATTERN (Fig.6-8):
A ‘perfect’spray gun setup is only ever a temporary
achievement; factors which affect this include the choice
of material, nozzle & air cap size and the compressor
conditions on the day.
Adjust the gun to a neutral starting setup and spray a test
pattern. Judge the pattern; continuing to spray further
tests and make fine adjustments until you are happy with
the results.
1.Set the air supply pressure and connect the spray
gun.
2.Open the spray pattern control fully anti clockwise to
give a wide pattern
3.Open the air control to Max.
4.Adjust the paint control anticlockwise so the trigger
has full movement.
5. Adjust the air diffuser horns so they are in the
horizontal position - giving an upright spray pattern.
6.On a piece of white paper [or other suitable media]
spray two test patterns: one holding the spray gun
still and approx. 20cm away from the paper. The
second keeping the gun parallel to paper while you
make a short pass sideways.

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7.If the shape of the spray pattern differs from the
image (Fig.6) refer to the troubleshooting section of
this document before proceeding.
If the shape, size and distribution of the spray droplets on
the second test are largely uneven, it would suggest the
atomization of the material is insufficient. Increase the air
flow slightly until the droplets seems more uniform
(Fig.7).
8.Now adjust the air diffuser horns so they are vertical.
9. If the paint appears very heavy it may mean the
viscosity or material is not right for the nozzle size.
Try reducing the flow control. If unsuccessful, select a
smaller nozzle.
If the coverage appears too little it suggests the nozzle is
too small. Step up a nozzle size and repeat the tests.
Begin spraying when you are happy with the results.
Experience through practice will speed up the
identification and adjustments necessary based on the
spray guns results.
SPRAYING TECHNIQUE (Fig.9):
Hold the spray gun at a right angle to the work piece
while maintaining an equal distance of approx. 20cm.
Move the gun across the work piece keeping it parallel all
the way. A fluid wrist action will be necessary.
Begin pulling the trigger before the leading edge of the
work piece is reached, holding it in fully as you travel
smoothly across and releasing after the trailing edge has
been passed.
Difficult areas such as corners should be sprayed first.
When spraying a corner maintain the angle of 90°.
Paint needs to equally cover both surfaces leading away
from the corner.
To hide the join and prevent streaking overlap by at least
50% across the previously painted surface.
6. MAINTENANCE
After each job and during prolonged breaks in spraying the gun must be cleaned thoroughly
inside and out to stop any material drying and clogging it up.
1. Empty the paint pot of any unused material into a suitable container for appropriate disposal.
2. Fill the pot with water and spray to flush the gun body through.
With the air supply disconnected:
1. Remove the lid and paint pot. Place in a cleaning bath briefly to soak.
2. Remove the air cap; immerse in water and scrub any remaining paint with the cleaning brush
supplied. Clear any clogged holes with the nozzle brush.
3. With the multi size spanner, remove the nozzle; immerse in water again clearing any clogged

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holes with the nozzle brush.
4. Carefully undo the paint control to release the spring tension on the needle. Store the
control cap and spring to one side. Pull the trigger once and then with draw the needle.
Immerse the needle and gun body in the bath to make sure all remaining paint is removed.
5. Reassemble the spray gun components lubricating all nylon packing washers, and any
moving parts that pivot or slide. Only apply a lubricant specifically designed for use on a
spray gun.
6. When rebuilt, connect the gun to the air supply and operate the trigger for a short while to
disperse any remaining water and dry the inside of the gun.
Do not use any metal objects to clean the nozzle or air holes as it will damage the spray
gun and result in a poor spray pattern.

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7. TROUBLESHOOTING
Problem
Possible Causes
Suggested Remedy
Spray size generally uneven
due to poor atomization.
1.Too much paint entering air
flow.
2. Insufficient air hitting paint
flow.
1.Decrease paint flow or reduce the nozzle to
the next size down.
2.Increase air flow on the spray gun's air control.
Intermittent spray.
1. Air is getting into the paint
circuit.
1.Tighten the nozzle up with the multi size
spanner.
2.Check the paint pot is not empty.
A lot of overspray.
1.Spray gun distance from
work piece.
2.Technique.
3. Atomization too high.
1. Maintain a distance of approx. 20cm.
2. Make sure you are not flicking the gun on the
leading or trailing edge.
3. Reduce air flow on the spray gun's air control.
Badly formed spray pattern.
1. Nozzle or air cap alignment.
2. Debris or dried paint
blocking air cap or nozzle.
3. Needle tip worn or damage.
1. Check that both are correctly seated.
2. Check and if necessary clean the air cap and
nozzle.
3. Replace needle assembly.
Lack of spray in the centre.
1.Not enough paint entering air
flow.
2.Too much air flow.
1. Increase paint flow or step up the
nozz\e to the next size.
2. Reduce air flow on the spray gun's
air control.
Uneven fan shape.
1. Air cap holes blocked on
one side.
2. Needle tip and air cap worn
or damaged nozzle.
1. Clean the air cap thoroughly.
2. Replace needle assembly.
Air or paint leaking.
1. Sticking trigger or needle
mechanism.
2. Loose or worn packing
washers.
1. Lubricate all moving parts,
2. Check tightness. If tight, repla
lubricate packing washers.
NOTE: Any adjustments made to remedy a problem will alter the original test pattern results. Slight rebalancing
may be necessary.

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8. DISPOSAL
At the end of the product's working life, or when it can no longer be repaired, ensure that it
is disposed of according to national regulations.
In all circumstances:
Do not abandon in the environment.
Always read the literature supplied with the paint to ensure it is compatible with the equipment
and any other paint material that you intend using.
CANNON TOOLS LTD
Add: 20 station road, Rowley Regis, west midlands,B65 0JU.U.K.
Made in China