Clarke PFG 14, PFG 18, 3090090, 3090092 User guide

SPRAY GUN

SPRAY GUN

MODEL NO: PGF14 & PGF18

PART No: 3090090 & 3090092

OPERATION & MAINTENANCE

INSTRUCTIONS

0904

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NOTES

Please read these instructions carefully before operating the tool

Thank you for purchasing this CLARKE Pro Gun.
Before using the device, please read this manual thoroughly and carefully. Follow
all instructions given. This is for your own safety and that of others around you, and
is also to help you achieve long and trouble free service from your new spray gun.

CLARKE GUARANTEE

This CLARKE product is guaranteed against faulty manufacture for a period
of 12 months from the date of purchase. Please keep your receipt as proof
of purchase.

This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.

Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.

This guarantee does not affect your statutory rights.

Please be aware that certain parts of this spray gun will wear, requiring replacement and
that these parts may not be covered by your guarantee.

The wear on certain parts depends on the abrasiveness of the materials being sprayed.
More abrasive materials such as latex paint (emulsions) will cause these parts to wear
much faster.

Replacement parts are available from your nearest Clarke International dealer.

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PARTS & SERVICE TEL: [phone]

or e-mail as follows:

PARTS: [e-mail]

SERVICE: [e-mail]

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SPECIFICATIONS

PARTS LIST

No DESCRIPTION PGF14 PGF18 Qty

GRAVITY FED PRO SPRAY GUNS

Professional spray guns with external paint mix and 600ml gravity feed cup for
cellulose, enamels, polyurethane, acrylics, metallics and all similar viscosity finishes

SPECIFICATIONS

PGF14 PGF18

Part No : ................................ 3090090 3090092

Cup Capacity : .................... 600ml 600 ml

Air Consumption : ................ 11.0 CFM 11.0 CFM

Air Inlet Connector : ............ ¼”BSP ¼”BSP

Nozzle : ................................. 1.4mm 1.8mm

Operating Pressure : ............ 20 - 50 PSI 20 - 43.5 PSI

Maximum Air Pressure ........

(at gun when trigger pulled) 3.5 bar 3 bar

CONTENTS page

Guarantee 2

Safety Precautions 4

General Arrangement 5

Air Supply 5

Using The Spraygun 6

Maintenance 7

Paint Spraying Hints 8 / 9

Parts List 11 / 12

01 Air Cap Set NSPGF1401 NSPGF1801 1
02 Fluid Nozzle NSPGF1402 NSPGF1802 1
03 Air Diversion Ring NSPGF1403 NSPGF1803 1
04 Piston Pad NSPGF1404 NSPGF1804 1
05 Compression Screw NSPGF1405 NSPGF1805 1

05a Valve NSPGF1405a NSPGF1805a 1

06 Compression Spring For Needle Seal NSPGF1406 NSPGF1806 1
07 Seal For Air Piston NSPGF1407 NSPGF1807 1
08 Gun Body NSPGF1408 NSPGF1808 1
09 Fluid Needle NSPGF1409 NSPGF1809 1
10 Spring For Air Piston NSPGF1410 NSPGF1810 1
11 Locking Ring NSPGF1411 NSPGF1811 1
12 Fluid Control Knob NSPGF1412 NSPGF1812 1
13 Stuffing Box For Air Piston NSPGF1413 NSPGF1813 1
14 Packing For Air Piston NSPGF1414 NSPGF1814 1
15 Air Piston NSPGF1415 NSPGF1815 1
16 Piston Ring NSPGF1416 NSPGF1816 1
17 Air Piston Needle NSPGF1417 NSPGF1817 1
18 Spring For Piston NSPGF1418 NSPGF1818 1
19 Fluid valve Assy NSPGF1419 NSPGF1819 1
20 Fluid Control Knob NSPGF1420 NSPGF1820 1
21 Countersunk Screw NSPGF1421 NSPGF1821 1
22 Trigger Bolt NSPGF1422 NSPGF1822 1
23 ‘C’ Clip NSPGF1423 NSPGF1823 1
24 Bolt NSPGF1424 NSPGF1824 1
25 Fluid Needle Pin NSPGF1425 NSPGF1825 1
26 Paint Connection NSPGF1426 NSPGF1826 1
27 Filter NSPGF1427 NSPGF1827 1
28 Plastic Paint Cup NSPGF1428 NSPGF1828 1
29 Cover NSPGF1429 NSPGF1829 1
30 Non-Drip Device NSPGF1430 NSPGF1830 1
31 Air Adjustment Valve Assy NSPGF1431 NSPGF1831 1
32 Air Connection NSPGF1432 NSPGF1832 1
33 Cleaning Brush NSPGF1433 NSPGF1833 1
34 Socket Spanner NSPGF1434 NSPGF1834 1
35 Wrench NSPGF1435 NSPGF1835 1
37 Trigger NSPGF1437 NSPGF1837 1

# Filter Net (Not Shown) NSPGF1438 NSPGF1438 1
# Air Hose Joint Set (Not Shown) NSPGF1439 NSPGF1439 1

Please note that the details and specifications contained herein are correct at the time of going to

print. However CLARKE International reserve the right to change specifications at any time without

prior notice.

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IMPORTANT:

The use of parts other than CLARKE replacement parts may result in safety hazards,
decreased tool performance and may invalidate your warranty.

PARTS DIAGRAM

SAFETY PRECAUTIONS

WARNING

Compressed air can be

dangerous. Ensure that you are

thoroughly familiar with all

precautions relating to the use of

compressors and compressed air

supply.

For your personal safety and that of others around you. Follow

these safety instructions carefully.

NOTE : products used in this spray gun may be covered by COSHH Regulations.

• ALWAY S check the manufacturer’s data sheets on the products being sprayed for

any particular hazards, and follow the manufacturer’s instructions. Take particular
care if spraying isocyanate paints.

• ALWAY S wear a suitable approved breathing mask when spraying, to protect against

inhalation of paint spray or fumes. An air feed mask may be required when spraying
some types of paint. If in doubt, check with the paint manufacturer.

• ALWAY S make sure there is adequate ventilation. Do not spray in confined or enclosed

areas.

PARTS & SERVICE TEL: [phone]

or e-mail as follows:

PARTS: [e-mail]

SERVICE: [e-mail]

• ALWAYS disconnect the spray gun from the air supply when it is not in use, and before

any disassembly.

• ALWAYS keep the spray nozzle in place when spraying.

• ALWAY S thoroughly clean the spray gun after use. See ‘Maintenance’

• NEVER spray paint towards people or animals. In the case of injury, seek expert

medical advice immediately.

• NEVER smoke while spraying or preparing paints, or spray near a naked flame, heat

source and electric sparks. Many paints are flammable.

• NEVER allow children to use or play with this appliance.

• NEVER spray products containing halogenated hydrocarbons (such as

trichloroethane or methylene chloride) with this gun as they can react chemically
with aluminium or zinc to produce an explosion hazard.

• NEVER exceed the maximum input air pressure of (50 psi PGF14) & (.43.5 psi PGF18).

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GENERAL ARRANGEMENT

PAINT SPRAYING HINTS Cont

Paint Cup

Knurled Locking Ring

Wings

Spray Nozzle

Trigger

AIR SUPPLY

Air Flow Control

Non-Drip Device

Fluid Control

Fan Control

Air Supply

To obtain best results, it is vital that the surface to be sprayed is well prepared. It must be
clean, free from dust, dirt and grease. Mask any area that is not to be sprayed.

Paint Thinning

Thinning is particularly important when paint spraying. Most paints are supplied ready for
brush application and need to be sufficiently diluted for spraying purposes. Always follow
the paint manufacturers instructions. If in doubt, always consult the paint manufacturer.

A Viscous Cup (not supplied), will assist in determining the correct thickness of the paint.
Ensure the paint is free from lumps or other
matter, if necessary strain it through a coarse
filter.

The ideal viscosity for most paints is given in
the chart opposite.

Dip the cup into the paint and fill to the
brim. Time how long it takes for the cup to
empty.

Thin as required until times are achieved

Water based paints ..... 35 - 45 secs

Oil based paints .......... 15 - 25 secs

Enamel paints .............. 15 - 25 secs

Primers .......................... 20 - 30 secs

Varnishes...................... 20 - 25 secs

Aluminium paints ........ 15 - 25 secs

Wood preservatives .... Do Not Dilute

Wood Stains .................. Do Not Dilute

Smooth Masonry paint....dilute by 5 - 10%

Pro-Gun spray guns are available with two nozzle sizes, 1.4mm, and 1.8mm. The larger the
nozzle, the more compressed air is needed. Make sure your spray gun is matched to the
capacity of your compressor.

Model Nozzle size Compressor required

PGF-14 1.4 mm 2 hp and above

PGF-18 1.8 mm 3 hp and above

For best results, the air supply to the spray gun must be clean and dry, with no oil or water
contamination. Follow the air compressor manufacturer’s guidelines on installation and
operation to ensure that your air supply is as clean as possible. The compressed air supply
line to the spray gun must be fitted with an oil and water extractor and a suitable
pressure regulator.

Connect the air supply to the spray gun using a suitable 1/4” BSP fitting.

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Alternatively if a viscous cup is not available, the following information can be used
as a rough guide.

Water based paints (emulsions) 10-20% water.

Oil based paints (gloss) up to 10% thinners.

Cellulose paints up to 50 % cellulose thinners.

IF IN ANY DOUBT, CONTACT THE PAINT MANUFACTURER

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PAINT SPRAYING HINTS

USING THE SPRAYGUN

WARNING

NEVER attempt to spray unless you are wearing suitable, approved

respiratory and eye protection.

REMEMBER that some modern paints require specialist respiratory

protection...always consult the paint manufacturers instructions.

1. General Preparation

a. Ensure that the area in which you will be spraying is clean and dust free.

b. Connect spray gun to compressor via suitable flexible hose.

c. With no paint in spray gun, test system for air leaks.

d. Cover adjacent pieces of equipment to protect from overspray. Mask areas

of the article not to be sprayed.

e. Ensure surface to be painted is clean, dry and free from oil and dust.

Check paint manufacturer’s instructions for any special surface
preparation required.

REMEMBER - TIME SPENT PREPARING SAVES TIME SPENT FINISHING

2. Paint Preparation

a. Achieve the correct paint viscosity. This should be done according to

paint manufacturer’s instructions, and will vary according to type of paint, (see
paint thinning on page 9).

b. Having mixed the paint thoroughly in a separate container, pour into the

spray gun paint container through a fine filter.

DO NOT OVERFILL SPRAY GUN PAINT CONTAINER - three quarters full is maximum

c. It is usually best to experiment with a couple of practice spray coats on a

piece of material with the same type of surface as the article you wish to
spray, eg. metal for a car body panel, wood for a piece of furniture etc.

d. Some common problems:

PROBLEM CAUSE CORRECTION

Paint does not atomise. Paint is too thick. Add thinners.
(comes out in blobs). Air pressure is too low. Increase air pressure.

Paint dries before hitting Paint is too thin. Add more paint.
surface, leaving it dry Air pressure is too high. Reduce air pressure.
with a rough texture.

Finish is pitted like Air pressure too high Reduce air pressure.
orange peel. or spray too close to increase distance between

work. gun and work.

PGF spray guns are gravity fed with paint from the paint cup. The air flow through the air
cap draws paint into the nozzle assembly, where it is atomised and sprayed forward.

Attach the paint cup to the gun, ensure any seals etc are sound first, mix the paint to the
correct viscosity for spraying according to the manufacturers instructions, and strain it into
the paint cup through a fine mesh filter. When mixing the paint, make sure that you have
enough thinners left to clean the spray gun after use, do not fill the paint cup to more
than 3/4 full. Make sure that the top edge of the cup and the cup sealing gasket are
clean and free from damage before screwing the cap on, it is also very important to keep
the cup vent clear.

Set the spray pattern and fluid flow using the adjustment screws on the spray gun. The
spray pattern is variable between round and fan by adjusting the air flow through the air
cap. Turn the fan control anticlockwise to increase flow and give a fan shaped spray
pattern, turning clockwise to close off the air flow will give a circular pattern. The fan can
be adjusted vertically or horizontally to suit your requirements by loosening the knurled
locking ring and turning the wings to the desired position. Set the fluid flow according to
the paint in use and the spray pattern by using the fluid control screw; anticlockwise to
increase, and clockwise to reduce flow. As the width of the spray is increased, fluid flow will
also need to be increased.

The air pressure needed will vary according to the paint in use, with thicker paints needing
greater pressure. For most paints, a pressure of between 22 psi and 43 psi is adequate, to
increase the air pressure, turn the air control anticlockwise to increase, and clockwise to
decrease the air pressure.

NOTE:

To reduce overspray and obtain maximum transfer efficiency, always use the lowest
possible air inlet atomising pressure that produces an acceptable spray pattern.

The first requirement for a good resultant finish is the proper handling of the gun. The gun
should be perpendicular to the surface being covered and moved parallel with it. The
stroke should be started before the trigger is pulled and likewise released before the stroke
is ended. This gives accurate control of the gun and material.

The distance between the gun and the surface to be covered should be 6 to 12 inches
depending on the material and atomising pressure. The material deposited should always
be even and wet. Lap each stroke over the preceding stroke to obtain a uniform finish.

Damage to the fluid needle or nozzle, or any of the air ports, will result in a faulty spray
pattern. Take care when cleaning or assembling these components.

When spraying, the gun should be held square to the surface being painted, at a
distance of 6 to 12 inches depending on the paint and atomising pressure. Keep the gun
parallel to the surface being sprayed, starting the stroke before pulling the trigger, and
releasing the trigger before ending the stroke. Overlap each stroke over the preceding
stroke to obtain an even finish. The paint cover should be even and wet when spraying.

If the gun is too far from the surface, or the paint is too thin, the paint will dry before hitting
the work, resulting in a rough, sandy finish. Allowing overspray to fall on a finished area will
also result in a rough finish. Too much paint feed or holding the gun too close to the work
will lead to runs and sagging.

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MAINTENANCE Item Nos in brackets refer to parts list on page 12.

WARNING

Relieve any pressure in the gun and hose, and disconnect the spray gun from
the air supply, before any disassembly.

It is essential that the spray gun is kept clean. Dried paint in the nozzle assembly or airways
will stop the gun from working. For the gun to perform at its best it must be cleaned and
lubricated after every use.

After use, empty any remaining paint from the paint cup, wipe the cup clean with a dry,
lint free rag, and fill with thinners. Spray the thinners through the spray gun until it is clean.

1. Immerse only the front end of the gun until solvent just covers the fluid connection.
NOTE : do not submerge the entire spray gun in solvent because :

a, the lubricant in the seals/packings will dissolve and the packings will dry out.

b, the lubricant at wear surfaces will dissolve resulting in harder operation and

premature wear.

c, residue from dirty solvent may clog the narrow air passages in the gun.

2. Use a small bristle brush and solvent to wash off accumulated paint.

3. Wipe down the outside of the gun with solvent dampened cloth.

4. Lubricate the gun daily, using a light machine oil on :

a, fluid needle packing

b, air valve packing

c, spray width adjuster

d, trigger pivot point

Coat the fluid control spring with grease.

CAUTION : never use silicon based lubricants as this may cause paint finish defects.

DO NOT poke any of the holes in the air cap or nozzle with metal instruments. These holes
are precision drilled, and can be damaged by probing with anything harder than a
wooden toothpick.

Make sure that the air inlet vent to the paint cup is kept clean. Blockages in this vent will
prevent an even material flow to the gun.

Occasionally it may be necessary to strip the gun down for more in depth cleaning and
or replacement of parts etc, to do this proceed as follows.

NOTE: Ensure all parts are carefully laid out in the order that they are removed.

1. Remove the air cap set (item 01) by unscrewing the knurled locking ring in an
anticlockwise direction.

2. Unscrew and remove the fluid control knob (item 12) along with the knurled locknut
(item 11), hold the gun with the nozzle facing downwards to ensure the spring doesn’t
fall out.

3. Tip gun upwards to remove the spring (item 10).

4. Carefully withdraw the fluid needle (item 09), it may help to squeeze the trigger (item

37) whilst pulling the needle, DO NOT use pliers etc, as this may damage the needle.

5. Remove the fluid nozzle assy (items 02, 03 & 04). Locate the wrench (item 35) supplied,
on the fluid nozzle (item 02) and turn clockwise (left handed thread).

6. Separate the fluid nozzle and air diversion ring, secure the socket spanner supplied

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(34) in a vice with the hexagonal section facing upwards,

flats not on the round section

loosen and unscrew the nozzle, anticlockwise. When reassembling, ensure the nozzle is
locked firmly onto the air diversion ring.

7. Locate the socket spanner on to the Compression screw (05) and unscrew by turning
anticlockwise with the handle end of the wrench on the hexagonal section of the
spanner. Remove parts, compression screw (05), valve (05a), compression spring (06)
and seal (07), it may be necessary to push the seal out using the fluid needle.

No further disassembly should be necessary for normal maintenance activities,

Reassemble in gun in reverse order, to fit parts 05, 05a, 06 and 07, this must be carried out
as follows.

, place the nozzle assy onto the spanner, using the wrench,

NOTE: grip the spanner across

• Fully Insert the fluid needle ensuring it passes through the hole in the fluid needle pin

(item 25), hold in position by placing index finger on blunt end of the needle. With
the needle facing upwards, fit the parts in the order listed above, ensuring the
correct orientation as removed, if necessary refer to the parts diagram.

• Locate the box spanner over the needle pin and push down until the spanner

engages fully on the compression screw, carefully tighten by hand at this stage only.
It should now be possible to move the fluid needle in and out by hand without using
excessive force, if needle moves smoothly, remove it completely and tighten the
compression screw with box spanner. Refit the needle and again ensure it moves
smoothly without forcing.

Push the fluid needle fully home, fit spring followed by the fluid control knob and
locknut.

• Place the piston pad (04) onto the gun body ensuring the locator is in the top hole

of the body.

• Screw the nozzle assy, anticlockwise into the gun body and tighten securely using

the wrench, DO NOT overtighten.

Re-fit the air cap set with the wings horizontal, tighten the knurled locking ring, hand
tight only.

never mix components from spray guns, even those of the same type. Do not overtighten
components, and be careful not to cross thread any parts on assembly.

Air Piston Assembly

If it is found necessary to remove items 13,14,15,16,17 & 18, proceed as follows:

• Using two flat bladed screwdrivers, loosen and remove the trigger bolt (items 22 &24).

• loosen the air piston using a 13mm ring spanner preferably. The complete assy can

now be removed.

Fluid Control

• To remove the control valve, unscrew and remove the countersunk screw (21).

• Using a 14mm ring spanner, loosen and remove the valve assembly.

Air Adjustment Valve

• Using a 12mm ring spanner, unscrew and remove valve assembly (31).

Reassemble all removed parts in reverse order.

Check the air supply hose regularly for any signs of damage, and replace it if necessary.
Do not use damaged or leaking hoses.

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