Sealey LVLP-990 User manual

INSTRUCTIONS FOR:
LVLP SPRAY GUN
Models: LVLP-990 & LVLP-991
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.
LVLP-990/991 - 0004 - (1) - 191099
1. SAFETY INSTRUCTIONS
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS AND
CAUTIONS. USE THIS PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY
CAUSE DAMAGE OR PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. PLEASE KEEP INSTRUCTIONS SAFE FOR FUTURE USE.
3. AIR SUPPLY CONNECTION
2. DESCRIPTION & SPECIFICATIONS
3Familiarise yourself with this products application and limitations, as well as the specific potential hazards peculiar to the spray gun.
pWARNING! Disconnect the spray gun from the air supply before changing accessories, servicing or performing any maintenance.
3Paint cup remains pressurised after gun is disconnected from air line. DO NOT pull the trigger, but depressurise by gently opening cup.
3Maintain the spray gun in good condition (use an authorised service agent).
3Replace or repair damaged parts. Use recommended parts only. Non-authorised parts may be dangerous and will invalidate the warranty.
3Keep the spray gun clean for best and safest performance.
3Ensure the air system is compatible with the spray gun air consumption (269l/min - 9.5cfm).
3Wear approved safety respiratory protection and safety goggles.
3Remove ill fitting clothing. Remove ties, watches, rings, and other loose jewellery, and tie back long hair.
3Locate the spray gun in a suitable working area, keep area clean and tidy and free from unrelated materials and ensure there is adequate
ventilation and lighting.
3Keep children and unauthorised persons away from the working area.
3When not in use ensure the air supply is turned off.
3Avoid unintentional operation.
7DO NOT point spray gun at yourself, at other persons or animals.
7DO NOT carry the spray gun by the hose, or yank the hose from the air supply.
7DO NOT use the spray gun for any purpose other than for which it is designed.
7DO NOT allow untrained persons to operate the spray gun.
7DO NOT get the spray gun wet or use in damp or wet locations or areas where there is condensation.
7DO NOT operate the spray gun if any parts are missing or damaged as this may cause failure or possible personal injury.
7DO NOT direct air from the air hose at yourself or at others.
3When not in use switch the spray gun off and disconnect from the air supply.
The LVLP spray gun has an anodised body, which resists corrosion and has a low affinity for paint making the unit easy to clean, and adjustable
paint and fan width controls. LVLP (Low Volume - Low Pressure) technology uses far less air and the gun is compatible with compressors as
small as 3.5hp/2.6kW. Suitable for use with water based paints.
Model LVLP-990 Suction Feed
Standard set-up . . . . . . . . . . . . . . .1.7mm
Available set-ups . . . . . . . . . . . .1.5,1.9mm
Air pressure . . . . . . . . . . . . . . .2 bar/30psi
Air consumption . . . . . . . . . . . . . . .9.5cfm
Max. operating pressure . . . . . .4 bar/58psi
Model LVLP-991 Gravity Feed
Standard set-up . . . . . . . . . . . . . . .1.5mm
Available set-ups . . . . . . . . .1.3,1.7,1.9mm
Air pressure . . . . . . . . . . . . . . .2 bar/30psi
Air consumption . . . . . . . . . . . . . . .9.5cfm
Max. operating pressure . . . . . .4 bar/58psi
2.1. Specifications
3.1. Ensure the air valve is in the "off" position before connecting to the air supply.
3.2. You will require an air pressure of 2 bar/30psi , and an air supply of 9.5cfm to operate the spray gun.
3.3. pWARNING! Ensure the air is clean and the pressure does not exceed 4 bar/58psi. Too high an air pressure and unclean air will shorten
the product life due to excessive wear, and may be dangerous, possibly causing damage and personal injury.
3.4. Drain the air tank daily. Water in the air line may damage the gun and will contaminate the paint.
3.5. Clean the air inlet filter screen weekly. The recommended hook-up procedure is shown.
3.6. Line pressure should be increased to compensate for
unusually long air hoses (over 8 metres).
The minimum hose diameter should be 10mm I.D.
and fittings must have the same inside dimensions.
3.7. Keep hoses away from heat, oil and sharp edges.
Check hoses for wear and make certain that all
connections are secure.

4. OPERATING INSTRUCTIONS
4.1. For best results, 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 give accurate control of the gun
and material (fig. 1).
4.2. Spray from a distance of about 6 to 10 inches 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) If a fluid pressure tank is used, the amount of fluid can be controlled by regulating the
pressure on the tank. Otherwise, use the fluid control screw on the gun (see Section 6).
b) As the width of the spray is increased more material must be allowed to pass
through the gun to obtain the same coverage on the increased area.
c) The direction of the fan spray, either horizontal or vertical, is obtained by turning
the air nozzle to the desired position then tightening the retaining ring.
Disconnect from the air supply before attempting any maintenance or cleaning. Remember to release pressure from cup once disconnected
from the air line. When reassembling after maintenance, be sure to take care when screwing parts together. At first screw parts hand tight
to avoid cross-threading. If a part cannot easily be turned by hand, check that you have the correct part, unscrew, realign and try again.
DO NOT use excessive force when reassembling.
5.1. Spray gun
5.1.1. Remove air cap, place in solvent and brush clean. Using gun spanner remove fluid nozzle, place in solvent and brush clean.
5.1.2. Carefully clean inside the gun with brush and solvent.
5.1.3. Do not immerse the entire gun in solvent. This will cause lubricants to dissolve and packing to
dissolve and dry out (fig.2).
5.1.4. Wipe the outside of the gun with a dampened solvent rag.
5.1.5. Lubricate the gun daily with a light machine oil. Be sure to lubricate the fluid needle packing, air valve
packing, side port control packing and trigger pivot point. Do not use lubricants containing silicone.
5.1.6. When finished spraying, flush the gun through with clean thinners.
5. MAINTENANCE & CLEANING
5.2 Air nozzle, fluid nozzle and needle assembly
5.2.1. To clean the nozzles, soak in solvent to dissolve any dried material and then blow 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.
fig. 1
fig. 2
LVLP990/991 - 0004 - (1) - 191099
PROBLEM CAUSE SOLUTION
Fluid flow is too high for the air
pressure and air quantity
Air pressure and air quantity too
high for paint flow
Air entering the paint supply
One of the horn holes blocked (A).
In order to check, turn the air cap
180O, if the faulty pattern is now
reversed the hole must be cleaned.
Possible paint build-up between fluid
nozzle and air cap (A).
1. Increase air pressure adjusting regulator (A) and increase
air quantity adjusting regulator (B).
2. Reduce paint flow with regulator (C).
3. Paint could be too thick, in which case dilute it.
1. Reduce air pressure adjusting regulator (A).
2. Reduce air quantity adjusting regulator (B) and increase
fluid flow with regulator (C).
1. Tighten the connection between the gun and the cup.
2. Tighten fluid nozzle with gun spanner.
3. Check hole in bottom of cup for blockage.
4. Check whether paint pot is empty.
1. Place the air cup in solvent.
2. Clean hole with compressed air or with a soft probe.
DO NOT use a metal probe which will damage the hole.
1. Clean the air cap and the fluid nozzle, check also that they
match correctly.
2. Check needle for damage.
6. TROUBLESHOOTING
Poor atomization, heavy centre pattern
Heavy atomization, poor centre pattern
Heavy right or left side pattern
Top heavy or bottom heavy pattern
Intermittent spray pattern