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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
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.
© Jack Sealey Limited
Original Language Version
fig.6
HVLP774
fig.4
fig.5
Issue: 1 - 08/04/13
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