Campbell Hausfeld HV2100, HV2105 Coatings, Tip/Needle Size Application Air Cap

Operating Instructions and Parts Manual HV2100, HV2105

HVLP Paint Sprayers

Pre-Operation (Cont.)

4.Loosen the air cap locking ring one or two turns. This will feather the top and bottom of the fan pattern and slightly reduce the fan pattern size.

COATINGS

COATING PROPERTIES: Coatings are a blend of resins and additives to create a product that will provide a protective and beautifying surface to your work piece. Different resins have different properties. It is important to use the correct coating to achieve a desired result. Manufacturers of coatings can control the resin solids content, production viscosity, sheen, color, flow- out enhancement and other properties. Some products offer ways to adjust the coating properties such as speeding up or slowing down the drying time, adding catalysts to strengthen the molecular bond or adding flattening agents to lower the sheen. Manufacturers will often give some guidelines on how to thin their product for spray application.

There are many different types of spray equipment in use. Coating manufacturers cannot address all of

properties of the coating selected (see Table 4).

HVLP TURBINE PROPERTIES: Each turbine unit offers the finisher a maximum operating pressure. This pressure is determined by the size and output of the unit you have selected. The maximum available pressure will have a direct bearing upon the viscosity of the fluid that you choose to spray. Atomizing pressure and fluid viscosity directly relate to the efficiency of the equipment operation and the quality of the results that you will achieve.

Turbine Performance

Turbine Size . . . . . . . . . . . . . . 4 stage Unrestricted Pressure . . . . . . .7.0 psi

Coating Types Light-Heavy Viscosity Materials

Table 2

The available air volume and pressure at the air cap will meet the delivery of fluid coming out of the nozzle to create a fine mist called atomization. This mist travels directly to your work piece where it blends together to form

a connected wet film. Achieving a smooth, level surface will depend on the proper relationship between available atomizing pressure, the viscosity of the coating being applied and the properties of the coating.

USING LATEX PAINT: Although your turbine spray system is best suited to spray Class A Finish coatings such as lacquers, enamels, urethanes, varnishes, waterbornes etc., you can spray latex house paint if you follow a few simple rules:

1.It is necessary to thin some latex paints. This will vary from as little as 5% to no more than 20%. This will depend on the model turbine you are using and the quality of the paint used.

2.It is necessary to use a larger nozzle and needle set in the spray gun (2.0 mm or 2.5 mm).

3.It is recommended that a latex conditioner, Floetrol, be added to aid flow-out. If unable to find this product, locate one that is labeled “latex enamel” or “HVLP compatible.” These products are available at local paint stores.

them. Make sure you know about your spray equipment. Make sure to use the correct fluid viscosity to produce the best possible results.

YOUR CHOICE OF COATINGS AND VISCOSITY: Extremely thin, watery or light bodied fluids such as inks, aniline dyes and oil stains can generally be used straight from the can. Most water based finishing products are also formulated to be used straight from the can without thinning with a 3 stage or larger turbine. Most other coating products will need to be thinned anywhere from 10% to 50% depending on the available air pressure of the turbine model and the

Nozzle, Needle, and Air Caps

Tip/Needle Size	Application		Air Cap
.75 mm (.0295)	Inks, dyes, stains, extremely thin viscosity		HV104505AV
HV104520SV	fluids, water based finishes
1.0 mm (.039)	All purpose, thin lacquers, thin enamels,		HV104505AV
HV104521SV	water based finishes, automotive, marine,
	airplane finish
1.5 mm (.059)	Catalyzed lacquers, conversion varnish,	HV104505AV,
HV104522SV	primers, automotive, marine, airplane, finish		A.5297
	varnish, high viscosity industrial coatings,
	urethanes, enamel
2.0 mm (.079)	Thinned latex paint, multi-spec, heavy		A.5297
A.5220-2	primers, butyrate, nitrate dope, high visosity
	industrial coatings
2.5 mm (.098)	Thinned latex paint, multi-spec, solvent		A.5297
A.5221	adhesives, wax based paint strippers

Table 3 - Needle, Nozzle, and Air Cap Combinations

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