Graco Inc 998HVLP-SF-PL, 998HVLP-S-85 Hvlp System Spray GUN Maintenance, Spraying Operation

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998HVLP SIPHON FEED SYSTEM

HVLP SYSTEM SPRAY GUN MAINTENANCE:

998HVLP Siphon Feed Spray Gun:

1.The spray gun should be lubricated frequently, using a non-silicone oil. Place a drop on all moving parts, as shown in illustration.

2.Do not completely disassemble the spray gun if poor

spray pattern occurs. See trouble shooting guide for information on how to correct this problem.

3.Never submerge complete spray gun in any cleaning solution.

4.Never use any hard objects, such as wire, paper clip, or welding tip cleaner to clean the air cap orifices.

The air cap is made of high alloy heat treated aluminum and hard objects will damage the orifices. To clean the

air cap, soak it in a compatible cleaning solution and use soft objects, such as a medium bristle brush.

5.Gun can be cleaned in gun washer.

450TPTFE -Lined "No-Drip" Cup Assembly:

1. PTFE cup assembly may be cleaned with compatible solvents by hand or in gun washer.

SPRAYING OPERATION:

WARNING: Never pull trigger on spray gun when pointed in the direction of face, eyes or body.

To ensure optimum performance and compliance with applicable HVLP regulations, the following set-up procedure is necessary:

1.The Model 998HVLP Series spray gun requires an air supply of 13.9 CFM. This would normally be supplied by a minimum 4 hp compressor in good working condition. In addition, the air hose leading to the gun should be at least 3/8" (inside diameter) also in good condition.

2.Insure that no air restrictions such as low-volume cheater-valves impede the air flow to the HVLP System. If an air adjusting valve is desired, use a SHARPE 24AAV (Comp. # 2210) Air Adjusting Valve.

3.After supplying adequate air to the gun, adjust the inlet pressure to the lowest level recommended by your paint manufacturer (usually 30-50 PSI). This will give you the best transfer efficiency and also optimize your paint savings. The gun will automatically reduce the spraying pressure to 10 PSI or less at the air cap.

4.The 998HVLP Series spray guns are designed to function at inlet pressure less than 40 PSI.

If you exceed 40 PSI inlet pressure, the pattern may distort and you may also exceed some HVLP compliance regulations.

5.Once desired atomization is achieved, pattern size and shape is determined by adjusting the spray width adjuster knob (top knob on spray gun handle). Turn knob clockwise to reduce pattern size, turn knob counter-clockwise to increase pattern size. NOTE: See enclosed trouble shooting guide if you experience an irregular pattern.

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