INSTRUCTIONS FOR:
GRAVITY FEED
REFINISHING GUN
MODEL No: SG4.V3
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.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS,
WARNINGS AND 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. PLEASE KEEP INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY INSTRUCTIONS
Familiarise yourself with this products application and limitations, as well as the specific potential hazards peculiar to the spray gun.
WARNING!Disconnect the spray gun from the air supply before changing accessories, servicing or performing any maintenance.
Paint cup remains pressurised after gun is disconnected from air line. DO NOT pull the trigger, but depressurise by gently opening cup.
Maintain the spray gun in good condition (use an authorised service agent).
Replace or repair damaged parts. Use recommended parts only. Unauthorised parts may be dangerous and will invalidate the warranty.
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.
Keep the spray gun clean for best and safest performance.
Ensure the air system is suitable to the spray gun air consumption, (see specifications).
Wear approved respiratory protection and safety eye goggles.
Wear appropriate protective overalls.
Keep children and unauthorised persons away from the working area.
When not in use ensure the air supply is turned off.
Avoid unintentional operation.
DO NOT point spray gun at yourself, at other persons or animals.
DO NOT carry by the air hose, or yank the hose from the air supply.
DO NOT use the spray gun for any purpose other than 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 areas where there is condensation.
DO NOT operate gun if any parts are missing or damaged as this may cause failure or personal injury.
DO NOT direct air from the air hose at yourself or others.
2. INTRODUCTION & SPECIFICATIONS
Ideal for applying base coats. Features adjustable paint flow and fan width controls. Supplied with spun
aluminium gravity feed pot and comfortable composite gun handle. Suitable for use with waterborne paints.
Alternative set-ups available separately.
Standard Set up: .................................. 1.4mm
Available Set ups:.................................. 1.2, 1.6, 1.8, 2.0, 2.2, 2.5, 3.0mm
Air Pressure:...................................... 50psi
Air Consumption: ................................. 4.5 - 9.0cfm
Air Connection .................................... 1/4" BSP
3. AIR SUPPLY CONNECTION
3.1. Air Supply
3.1.1. Ensure spray gun air valve (or trigger) is in the "off" position before connecting to the air supply.
3.1.2. You will require an air pressure of 50psi, and an air flow according to specification.
3.1.3. WARNING! Ensure the air supply is clean and does not exceed 50psi while operating the spray gun. Too high an air pressure and
unclean air will shorten the product life due to excessive wear and may be dangerous causing damage and/or personal injury.
3.1.4. Drain the air tank daily. Water in the air line will ruin the paint finish and damage the spray gun.
3.1.5. Clean air inlet filter weekly. Recommended hook-up procedure is shown in fig.1.
3.1.6. 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 fittings must have the same inside dimensions.
3.1.7. Keep hose away from heat, oil and sharp edges. Check hose for wear and make certain that all connections are secure.
3.2. Couplings.
Do not fit a quick change coupling directly to the spray gun. A leader hose should be fitted to the spray gun and then a quick change
coupling may then be used to connect the leader hose to the air line recoil hose. See fig 1 & 2.
fig.1
fig.2
Original Language Version
SG4.V3 Issue: 2 - 15/01/10
4. OPERATING INSTRUCTIONS
4.1. For best results, make sure to handle the gun correctly. It 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 finishing the stroke. This will enable you to
accurately control the gun and material (fig 3).
4.2. Spray from a distance of about 150 (6") to 250mm (10") 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 finish. To reduce over spray and
obtain maximum efficiency, spray with the lowest possible atomizing air pressure.
4.3. Controlling the fan spray and the fluid.
a) Use the needle adjustment knob (fig 4.2) to increase or decrease the amount of paint flow.
b) The atomizing air flow is controlled by knob (fig 4.1).
b) As width of spray is increased more material must pass through the gun to obtain the same coverage on the increased area.
c) Turn the air nozzle (fig 4.3) to achieve a horizontal or vertical fan spray. Lock the nozzle with retaining ring (fig 4.4).
The spray pattern of the gun is variable from round to flat with all patterns in between. In normal operation, the wings on the
nozzle are horizontal as fig 4. 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 (fig 5).
fig.4
4
3
2
fig.5
1
fig.3
5. CLEANING & MAINTENANCE
FOR OPTIMUM PERFORMANCE IT IS VERY IMPORTANT TO ENSURE THE GUN IS CORRECTLY CLEANED AFTER EACH USE.
Disconnect from the air supply before attempting any cleaning or maintenance.
5.1. Cleaning the gun
5.1.1. Immerse the front end of the gun only in solvent. The solvent should just cover the fluid connection.
5.1.2. Use a bristle brush and solvent to wash off accumulated paint.
5.1.3. Do not immerse the entire gun in solvent as this will cause lubricants on the rubber seals to dissolve. Dirty solvent may also clog
narrow passages in the gun.
5.1.4. Flush the gun through with clean thinners.
5.1.5. Wipe the outside of the gun with a dampened solvent rag.
5.2. Air nozzle, fluid nozzle and needle assembly
5.2.1. To clean the nozzles, soak them in solvent to dissolve any dried material then blow them clean with air. Handle all nozzles carefully
and do not make any alterations in the gun.
5.2.2. If you need to probe the holes in the nozzles, be sure to use a tool that is softer than brass; do not use metal instruments.
5.2.3. Adjust the fluid needle valve so that when the gun is triggered, air flow occurs before fluid flow.
5.3. Further cleaning hints and tips
5.3.1. When cleaning with a cup, a compatible solvent should be siphoned through the gun by inserting the tube from the siphon cup in a
open container of solvent. Trigger the gun intermittently to thoroughly flush passageways and internal parts.
5.4. Maintenance
Take care when re-assembling. Screw parts hand tight to avoid cross-threading. If a part cannot easily be turned by hand, check that
you have the correct part, or unscrew, realign and try again. DO NOT use excessive force when re-assembling.
5.4.1. Lubricate the gun daily with a light machine oil.
5.4.2. If you change the nozzle size, ensure the complete nozzle set is exchanged. Insert paint nozzle before putting the paint needle in.
5.4.3. To change the needle packing use the socket spanner provided. Note: Handle the teflon seal and self tensioning spring with care.
Original Language Version
SG4.V3 Issue: 2 - 15/01/10
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