instructions for
MPORTANT:
PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
spray gun gravity feed 1.4mm & 1.8mm
model no: s641g & s642g
thank you for purchasing a sealey product. manufactured to a high standard, this product will, if used according to these
instructions, and properly maintained, give you years of trouble free performance.
refer to
instructions
Wear eye
protection
Wear protective
gloves
Wear safety
footwear
Wear protective
clothing
Wear a mask
1. safety
Warning! disconnect the spray gun from the air supply before changing accessories, servicing or performing any maintenance.
9 familiarise yourself with this products application and limitations, as well as the specific potential hazards peculiar to the spray gun.
Paint cup remains pressurised after gun is disconnected from air line.
9 dO nOt pull the trigger, but release the pressure by gently opening cup.
9 maintain the spray gun in good condition (use an authorised service agent).
9 replace or repair damaged parts. use recommended parts only. non authorised parts may be dangerous and will invalidate the
warranty.
9 locate the spray gun in an adequate working area for its function, keep area clean and tidy and free from unrelated materials, and
ensure there is adequate ventilation and lighting.
9 Keep the spray gun clean for best and safest performance.
9 ensure the air system is suitable to the spray gun air consumption, (see specifications).
9 Wear approved respiratory protection and safety eye goggles.
9 remove ill fitting clothing. remove ties, watches, rings, and other loose jewellery, and tie back long hair.
9 Keep children and unauthorised persons away from the working area.
9 Avoid unintentional operation.
8 dO nOt point spray gun at yourself, at other persons or animals.
8 dO nOt carry the by the air hose, or pull the hose from the air supply.
8 dO nOt use the spray gun for any purpose other than for which it is designed.
8 dO nOt allow untrained persons to operate the spray gun.
8 dO nOt get the spray gun wet or use in damp or wet locations or areas where there is condensation.
8 dO nOt operate gun if any parts are missing or damaged as this may cause failure or personal injury.
8 dO nOt direct air from the air hose at yourself or others.
9 When not in use switch the spray gun off, and disconnect from the air supply.
2. intrOductiOn
standard set-up and economy price make this spray gun ideal for applying various materials including adhesives, base coats and nishing
coats. Round/at fan control allows spray pattern to be adjusted for any job. Brass air cap with steel needle and nozzle. Alternative set-ups
available separately.
3. specificatiOn
model no............................................... s641G...............................................s642G
standard set-up....................................1.4mm................................................1.8mm
Available set-ups.....................1.7, 1.8, 2.0mm..................................1.4, 1.7, 2.0mm
Air Pressure.............................................43psi...................................................43psi
Air consumption.......................................4cfm....................................................4cfm
Pot capacity............................................600ml..................................................600ml
4. air supply
4.1. Recommended hook-up g.1
4.1.1. ensure spray gun air valve (or trigger) is in the off position before connecting to the air supply.
4.1.2. You will require an air pressure of 43psi, and an air ow according to specication.
Warning! ensure the air supply is clean and does not exceed 43psi while operating the spray gun. too high an air pressure and/or
unclean air will shorten the product life due to excessive wear, and may be dangerous causing damage and/or personal injury.
4.1.3. Drain the air tank daily. Water in the air line will ruin the paint nish and damage the spray gun.
4.1.4. Clean air inlet lter weekly.
4.1.5. line pressure should be increased to compensate for unusually long air hoses (over 8 metres). the minimum hose diameter
should be 1/4” I.D. and ttings must have the same inside dimensions.
4.1.6. Keep hose away from heat, oil and sharp edges. check hose for wear, and make certain that all connections are secure.
© Jack sealey limited
Original Language Version
s641G,s642G | issue 2 21/02/17
4.2. couplings
Vibration may cause failure if a quick change coupling is connected directly to the spray gun. to overcome this, connect
a leader hose to the spray gun. A quick change coupling may then be used to connect the leader hose to the air line recoil hose
(g.1 and 2).
g.1
g.2
5. OperatiOn
5.1. for best results, the gun should be held perpendicular to the surface being sprayed and moved parallel to it. start the stroke before
squeezing the trigger and release the trigger before nishing the stroke. This will enable accurate control of the gun and material
(g.3B).
5.2. spray from a distance of about 6 to 10 inches (150 to 250mm) depending on the material and the atomizing pressure. the material
deposited should always be even and wet. Each stroke must overlap the preceding stroke to obtain a uniform nish. To reduce
over-spray and obtain maximum efciency, spray with the lowest possible atomizing air pressure.
5.3. Controlling the fan spray and the uid.
a) Use the needle (paint) adjustment knob (g.4.2) to adjust the amount of paint ow.
b) The atomizing air ow is controlled by the control knob (g.4.1).
c) The volume of air input is controlled by the adjustment knob (g.4.3).
d) As width of spray is increased more material must pass through the gun to obtain the same coverage on the increased
area.
e) Turn the air nozzle (g.4.4) to achieve a horizontal or vertical fan spray. Lock the nozzle with retaining ring (g.4.5).
The spray pattern of the gun is variable from round to at with all patterns in between. In normal operation, the wings on
the nozzle are horizontal (g.5). This provides a vertical fan-shaped pattern which gives maximum, uniform and even
coverage when moving the gun back and forth, parallel to the work surface (g.6).
g.3A
g.4
g.3B
g.5
6. cleaning/maintenance
fOr Optimum perfOrmance it is very impOrtant tO ensure tHe spray gun is cOrrectly cleaned after
eacH use.
disconnect from the air supply before attempting any cleaning or maintenance.
6.1. cleaning the gun
© Jack sealey limited
Original Language Version
s641G,s642G | issue 2 21/02/17
g.6
6.1.1. flush the gun through with clean solvent.
6.1.2. use a bristle brush and solvent to wash off accumulated paint.
6.1.3. Clean the air nozzle using a brush. Blow clean with air. Handle all nozzles carefully and do not make any alterations in the gun.
6.1.4. Wipe the outside of the gun with a dampened solvent rag.
6.1.5. if there is a need to probe the holes in the nozzles, ensure a tool that is softer than brass is utilised, under no circumstances use a
metal tool, as the slightest amount of damage will adversely affect the spray pattern.
6.1.6. Adjust the uid needle valve so that when the gun is triggered, air ow occurs before uid ow.
6.2. maintenance
6.2.1. take care when re-assembling. screw parts hand tight to avoid cross-threading. if a part cannot easily be turned by hand, check
that it is the correct part, or unscrew it, realign and retry. dO nOt use excessive force when re-assembling.
6.2.2. When changing the nozzle size, ensure the complete nozzle set is tted. This consists of air cap, uid nozzle and paint needle.
Insert the uid nozzle before paint needle.
7. trOublesHOOting
A faulty spray is usually caused by improper cleaning or dried material around the uid nozzle tip or in the air nozzle. If cleaning is required,
remove these parts and soak them in solvent. t his will soften the dried material which can then be removed with a brush or a cloth.
these parts are carefully machined and any damage to them will cause a faulty spray. If either the air nozzle or uid nozzle are damaged, they
must be replaced before a perfect spray can be obtained.
Problem Possible cause solution
dried material in a side port restricts passage of air.
Greater flow of air from the clean side port forces a
fan pattern in the direction of the clogged side.
dried material around the outside of the fluid nozzle
tip restricts the passage of atomizing air at one point
through the centre opening of the air nozzle and
results in the pattern shown. this pattern can also be
caused by a loose air nozzle.
material too thin or atomization air pressure too high. regulate material viscosity or reduce air pressure.
dissolve material in the side ports with solvent, then
blow the gun clean. do not poke into the nozzles
with metal instruments.
remove the air nozzle and wipe off fluid tip using a
rag dampened with solvent. tighten the air nozzle.
not enough paint in bottle.
nozzle set / seating dirty, damaged or loosely
installed.
Paint spray ‘utters’
material bubbles or “boils” in paint cup. Atomised air flowing through the paint channel to the
bottle. the paint nozzle is not sufficiently tight.
Air nozzle is not completely screwed on.
parts support is available for this product. to obtain a parts listing and/or diagram,
please log on to www.sealey.co.uk, email sales@sealey.co.uk or telephone 01284 757500.
environmental protection
recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be
sorted, taken to a recycling centre and disposed of in a manner which is compatible with the environment.
When the product becomes completely unserviceable and requires disposal, drain off any fluids (if applicable)
into approved containers and dispose of the product and the fluids according to local regulations.
refill bottle. remove the fluid nozzle, clean the back
of the nozzle and the nozzle seat using a cloth
dampened with thinner. refit the nozzle and secure
it tightly against the body.
if necessary replace nozzle set.
tighten, clean or replace parts accordingly.
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specications and component parts without prior notice.
impOrtant: no liability is accepted for incorrect use of this product.
Warranty: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
© Jack sealey limited
sole uK distributor, sealey Group.
Kempson Way, Suffolk Business Park,
Bury st. edmunds, suffolk.
iP32 7Ar
Original Language Version
01284 757500
01284 703534
www.sealey.co.uk
sales@sealey.co.uk
s641G,s642G | issue 2 21/02/17
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