INSTRUCTIONS FOR:
GRAVITY FEED HVLP TOP COAT/
TOUCH UP SPRAY GUN SET
Model No:
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 THIS
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.
HVLP774
1. SAFETY INSTRUCTIONS
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 recommended 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- see specifications.
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.
Locate the spray gun in a suitable work area. Keep area clean and tidy and free from unrelated materials and ensure that there is adequate
ventilation and lighting.
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 spray gun.
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 maximum air pressure of 29psi.
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.
When not in use, disconnect the spray gun from the air supply, clean thoroughly and store safely.
2. INTRODUCTION & SPECIFICATION
Professional gravity feed spray gun set comprising a 1.0mm HVLP touch-up gun and a 1.3mm HVLP top-coat gun for larger coverage. Brass air cap
with stainless steel needle and a nozzle suitable for water based paints. Fully polished body resists corrosion and makes for easy cleaning.
Alternative set ups available separately.
Model No: .......................HVLP746 Top Coat ...............HVLP736 Touch Up
Standard set up: ..................1.3mm ..........................1.0mm
Available set up:..................1.7, 2.0mm ......................0.8mm
Air Pressure:.....................29psi ...........................29psi
Air Consumption:.................15cfm ..........................9cfm
Pot Capacity: ....................600ml ..........................125ml
3. AIR SUPPLY & CONNECTION
3.1. Air Supply
WARNING! Ensure the air supply is clean and does not exceed 29psi 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.
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 29psi, and an air flow according to specification.
3.1.3. Drain the air tank daily. Water in the air line will ruin the paint finish and damage the spray gun.
3.1.4. Clean air inlet filter weekly.
3.1.5. Line pressure should be increased to compensate for unusually long air hoses (over 8 metres). The minimum hose diameter should be
1/4” internal diameter and fittings must have compatible dimensions.
3.1.6. Keep hose away from heat, oil and sharp edges. Check hose for wear, and make certain that all connections are secure.
3.2. 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 (Sealey ref: AH2R or AH2R/38). A quick change coupling may then be used to connect the leader hose to the air line
recoil hose. See fig.1 & fig.2.
fig.1
fig.2
© Jack Sealey Limited
Original Language Version
HVLP774 Issue: 1 - 08/04/13
4. OPERATING INSTRUCTIONS
4.1. 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 finishing the stroke. This will enable you to accurately control the gun and material (fig.3).
4.2. Spray from a distance of about 150mm to 250mm depending on the material and the atomising 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 atomising air pressure.
4.3. Controlling the fan spray and the fluid.
a) Use the needle (paint) adjustment knob (fig.4.2) to increase or decrease the amount of paint flow.
b) The atomising air flow is controlled by knob (4.1). The volume of air input is controlled by knob (4.3).
c) As width of spray is increased more material must pass through the gun to obtain the same coverage on the increased area.
d) Turn the air nozzle (4.4) to achieve a horizontal or vertical fan spray. Lock the nozzle with retaining ring (4.5).
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. See fig.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.
fig.3
fig.4
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. (fig.6).
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 solvent.
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. Maintenance
5.3.1. Disassemble using a suitable spanner.
5.3.2. Take care when re-assembling. Firstly screw parts hand tight to avoid cross-threading then tighten with spanner. 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.
5.3.3. Lubricate the gun daily with a light machine oil.
5.3.4. If you change the nozzle size, ensure the complete nozzle set is exchanged. Insert paint nozzle before putting the paint needle in.
fig.6
fig.5
© Jack Sealey Limited
Original Language Version
HVLP774 Issue: 1 - 08/04/13
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